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git.eclipse.org / objectteams / org.eclipse.objectteams / c4606e8c36137ec06dbe7f751e5a1b6fe3148e55 / . / org.eclipse.jdt.core.tests.compiler / src / org / eclipse / jdt / core / tests / compiler / regression / GenericsRegressionTest_1_7.java
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/*******************************************************************************
* Copyright (c) 2011, 2016 IBM Corporation.
*
* This program and the accompanying materials
* are made available under the terms of the Eclipse Public License 2.0
* which accompanies this distribution, and is available at
* https://www.eclipse.org/legal/epl-2.0/
*
* SPDX-License-Identifier: EPL-2.0
*
* Contributors:
* IBM Corporation - initial API and implementation
* Stephan Herrmann - Contribution for
* Bug 400874 - [1.8][compiler] Inference infrastructure should evolve to meet JLS8 18.x (Part G of JSR335 spec)
* Bug 424205 - [1.8] Cannot infer type for diamond type with lambda on method invocation
* Bug 429203 - [1.8][compiler] NPE in AllocationExpression.binding
* Bug 456508 - Unexpected RHS PolyTypeBinding for: <code-snippet>
* Bug 462083 - [1.8][inference] Java 8 generic return type mismatch with interface involving type parameter.
*******************************************************************************/
package org.eclipse.jdt.core.tests.compiler.regression;
import java.util.Map;
import org.eclipse.jdt.internal.compiler.classfmt.ClassFileConstants;
import org.eclipse.jdt.internal.compiler.impl.CompilerOptions;
import junit.framework.Test;
@SuppressWarnings({ "unchecked", "rawtypes" })
public class GenericsRegressionTest_1_7 extends AbstractRegressionTest {
static {
// TESTS_NAMES = new String[] { "testBug456508" };
// TESTS_NUMBERS = new int[] { 40, 41, 43, 45, 63, 64 };
// TESTS_RANGE = new int[] { 11, -1 };
}
public GenericsRegressionTest_1_7(String name) {
super(name);
}
public static Test suite() {
return buildMinimalComplianceTestSuite(testClass(), F_1_7);
}
public void test001() {
this.runConformTest(
new String[] {
"X.java",
"public class X<T> {\n" +
" public static void main(String[] args) {\n" +
" X<String> x = new X<>();\n" +
" x.testFunction(\"SUCCESS\");\n" +
" }\n" +
" public void testFunction(T param){\n" +
" System.out.println(param);\n" +
" }\n" +
"}",
},
"SUCCESS");
}
public void test001a() {
this.runNegativeTest(
new String[] {
"X.java",
"public class X<T> {\n" +
" public static void main(String[] args) {\n" +
" X<String> x = new X<>();\n" +
" x.testFunction(1);\n" +
" }\n" +
" public void testFunction(T param){\n" +
" System.out.println(param);\n" +
" }\n" +
"}",
},
"----------\n" +
"1. ERROR in X.java (at line 4)\n" +
" x.testFunction(1);\n" +
" ^^^^^^^^^^^^\n" +
"The method testFunction(String) in the type X<String> is not applicable for the arguments (int)\n" +
"----------\n");
}
public void test001b() {
this.runConformTest(
new String[] {
"X.java",
"public class X<T> {\n" +
" public static void main(String[] args) {\n" +
" java.util.ArrayList<String> x = new java.util.ArrayList<>();\n" +
" x.add(\"\");\n" +
" System.out.println(\"SUCCESS\");\n" +
" }\n" +
"}",
},
"SUCCESS");
}
// fields
public void test001b_1() {
this.runConformTest(
new String[] {
"X.java",
"public class X<T> {\n" +
" static java.util.ArrayList<String> x = new java.util.ArrayList<>();\n" +
" public static void main(String[] args) {\n" +
" X.x.add(\"\");\n" +
" System.out.println(\"SUCCESS\");\n" +
" }\n" +
"}",
},
"SUCCESS");
}
public void test001c() {
this.runNegativeTest(
new String[] {
"X.java",
"public class X<T> {\n" +
" public static void main(String[] args) {\n" +
" java.util.ArrayList<String> x = new java.util.ArrayList<>();\n" +
" x.add(1);\n" +
" System.out.println(\"SUCCESS\");\n" +
" }\n" +
"}",
},
"----------\n" +
"1. ERROR in X.java (at line 4)\n" +
" x.add(1);\n" +
" ^^^\n" +
"The method add(int, String) in the type ArrayList<String> is not applicable for the arguments (int)\n" +
"----------\n");
}
// fields
public void test001c_1() {
this.runNegativeTest(
new String[] {
"X.java",
"public class X<T> {\n" +
" static java.util.ArrayList<String> x = new java.util.ArrayList<>();\n" +
" public static void main(String[] args) {\n" +
" X.x.add(1);\n" +
" System.out.println(\"SUCCESS\");\n" +
" }\n" +
"}",
},
"----------\n" +
"1. ERROR in X.java (at line 4)\n" +
" X.x.add(1);\n" +
" ^^^\n" +
"The method add(int, String) in the type ArrayList<String> is not applicable for the arguments (int)\n" +
"----------\n");
}
public void test001d() {
if (this.complianceLevel < ClassFileConstants.JDK1_8) {
this.runNegativeTest(
new String[] {
"X.java",
"import java.util.ArrayList;\n" +
"public class X<T> {" +
" public void ab(ArrayList<String> al){\n" +
" System.out.println(\"SUCCESS\");\n" +
" }\n" +
" public static void main(String[] args) {\n" +
" X<String> x = new X<>();\n" +
" x.ab(new ArrayList<>());\n" +
" }\n" +
"}",
},
"----------\n" +
"1. ERROR in X.java (at line 7)\n" +
" x.ab(new ArrayList<>());\n" +
" ^^\n" +
"The method ab(ArrayList<String>) in the type X<String> is not applicable for the arguments (ArrayList<Object>)\n" +
"----------\n");
} else {
this.runConformTest(
new String[] {
"X.java",
"import java.util.ArrayList;\n" +
"public class X<T> {" +
" public void ab(ArrayList<String> al){\n" +
" System.out.println(\"SUCCESS\");\n" +
" }\n" +
" public static void main(String[] args) {\n" +
" X<String> x = new X<>();\n" +
" x.ab(new ArrayList<>());\n" +
" }\n" +
"}",
},
"SUCCESS");
}
}
public void test001e() {
if (this.complianceLevel < ClassFileConstants.JDK1_8) {
this.runNegativeTest(
new String[] {
"X.java",
"import java.util.ArrayList;\n" +
"public class X<T> {" +
" public void ab(ArrayList<T> al){\n" +
" System.out.println(\"SUCCESS\");\n" +
" }\n" +
" public static void main(String[] args) {\n" +
" X<String> x = new X<>();\n" +
" x.ab(new ArrayList<>());\n" +
" }\n" +
"}",
},
"----------\n" +
"1. ERROR in X.java (at line 7)\n" +
" x.ab(new ArrayList<>());\n" +
" ^^\n" +
"The method ab(ArrayList<String>) in the type X<String> is not applicable for the arguments (ArrayList<Object>)\n" +
"----------\n");
} else {
this.runConformTest(
new String[] {
"X.java",
"import java.util.ArrayList;\n" +
"public class X<T> {" +
" public void ab(ArrayList<T> al){\n" +
" System.out.println(\"SUCCESS\");\n" +
" }\n" +
" public static void main(String[] args) {\n" +
" X<String> x = new X<>();\n" +
" x.ab(new ArrayList<>());\n" +
" }\n" +
"}",
},
"SUCCESS");
}
}
public void test001f() {
this.runNegativeTest(
new String[] {
"X.java",
"public class X<T> {\n" +
" class X2<T>{\n" +
" void methodx(T param){\n" +
" System.out.println(param);\n" +
" }\n" +
" }\n" +
" public static void main(String[] args) {\n" +
" X<String>.X2<String> x = new X<>().new X2<>();\n" +
" x.methodx(\"SUCCESS\");\n" +
" }\n" +
"}",
},
"----------\n" +
"1. WARNING in X.java (at line 2)\n" +
" class X2<T>{\n" +
" ^\n" +
"The type parameter T is hiding the type T\n" +
"----------\n" +
"2. ERROR in X.java (at line 8)\n" +
" X<String>.X2<String> x = new X<>().new X2<>();\n" +
" ^^^^^^^^^^^^^^^^^^^^\n" +
(this.complianceLevel < ClassFileConstants.JDK1_8 ?
"Type mismatch: cannot convert from X<Object>.X2<String> to X<String>.X2<String>\n"
:
"Cannot infer type arguments for X2<>\n"
) +
"----------\n");
}
// fields
public void test001f_1() {
this.runConformTest(
new String[] {
"X.java",
"public class X<T> {\n" +
" class X2<T>{\n" +
" void methodx(T param){\n" +
" System.out.println(param);\n" +
" }\n" +
" }\n" +
" X<String>.X2<String> x;\n" +
" public static void main(String[] args) {\n" +
" X test = new X();\n" +
" test.x = new X<>().new X2<>();\n" +
" test.x.methodx(\"SUCCESS\");\n" +
" }\n" +
"}",
},
"SUCCESS");
}
public void test001g() {
this.runNegativeTest(
new String[] {
"X.java",
"public class X<T> {\n" +
" class X2<K>{\n" +
" void methodx(T param, K param2){\n" +
" System.out.println(param);\n" +
" System.out.println(param2);\n" +
" }\n" +
" }\n" +
" public static void main(String[] args) {\n" +
" X<String>.X2<Integer> x = new X<>().new X2<>();\n" +
" x.methodx(\"SUCCESS\",1);\n" +
" }\n" +
"}",
},
"----------\n" +
"1. ERROR in X.java (at line 9)\n" +
" X<String>.X2<Integer> x = new X<>().new X2<>();\n" +
" ^^^^^^^^^^^^^^^^^^^^\n" +
(this.complianceLevel < ClassFileConstants.JDK1_8 ?
"Type mismatch: cannot convert from X<Object>.X2<Integer> to X<String>.X2<Integer>\n"
:
"Cannot infer type arguments for X2<>\n"
) +
"----------\n");
}
public void test001g_1() {
this.runConformTest(
new String[] {
"X.java",
"public class X<T> {\n" +
" class X2<K>{\n" +
" void methodx(T param, K param2){\n" +
" System.out.println(param);\n" +
" System.out.println(param2);\n" +
" }\n" +
" }\n" +
" X<String>.X2<Integer> x;\n" +
" public static void main(String[] args) {\n" +
" X test = new X();" +
" test.x = new X<>().new X2<>();\n" +
" test.x.methodx(\"SUCCESS\",1);\n" +
" }\n" +
"}",
},
"SUCCESS\n1");
}
public void test001h() {
this.runNegativeTest(
new String[] {
"X.java",
"public class X<T> {\n" +
" class X2<T>{\n" +
" void methodx(T param){\n" +
" System.out.println(param);\n" +
" }\n" +
" }\n" +
" public static void main(String[] args) {\n" +
" X<String>.X2<String> x = new X<>().new X2<>();\n" +
" x.methodx(1);\n" +
" }\n" +
"}",
},
"----------\n" +
"1. WARNING in X.java (at line 2)\n" +
" class X2<T>{\n" +
" ^\n" +
"The type parameter T is hiding the type T\n" +
"----------\n" +
"2. ERROR in X.java (at line 8)\n" +
" X<String>.X2<String> x = new X<>().new X2<>();\n" +
" ^^^^^^^^^^^^^^^^^^^^\n" +
(this.complianceLevel < ClassFileConstants.JDK1_8 ?
"Type mismatch: cannot convert from X<Object>.X2<String> to X<String>.X2<String>\n"
:
"Cannot infer type arguments for X2<>\n"
) +
"----------\n" +
"3. ERROR in X.java (at line 9)\n" +
" x.methodx(1);\n" +
" ^^^^^^^\n" +
"The method methodx(String) in the type X<String>.X2<String> is not applicable for the arguments (int)\n" +
"----------\n");
}
public void test001h_1() {
this.runNegativeTest(
new String[] {
"X.java",
"public class X<T> {\n" +
" class X2<T>{\n" +
" void methodx(T param){\n" +
" System.out.println(param);\n" +
" }\n" +
" }\n" +
" X<String>.X2<String> x;\n" +
" public static void main(String[] args) {\n" +
" X test = new X();\n" +
" test.x = new X<>().new X2<>();\n" +
" test.x.methodx(1);\n" +
" }\n" +
"}",
},
"----------\n" +
"1. WARNING in X.java (at line 2)\n" +
" class X2<T>{\n" +
" ^\n" +
"The type parameter T is hiding the type T\n" +
"----------\n" +
"2. WARNING in X.java (at line 9)\n" +
" X test = new X();\n" +
" ^\n" +
"X is a raw type. References to generic type X<T> should be parameterized\n" +
"----------\n" +
"3. WARNING in X.java (at line 9)\n" +
" X test = new X();\n" +
" ^\n" +
"X is a raw type. References to generic type X<T> should be parameterized\n" +
"----------\n" +
"4. WARNING in X.java (at line 10)\n" +
" test.x = new X<>().new X2<>();\n" +
" ^\n" +
"Type safety: The field x from the raw type X is assigned a value of type X<Object>.X2<Object>. References to generic type X<T> should be parameterized\n" +
"----------\n" +
"5. WARNING in X.java (at line 11)\n" +
" test.x.methodx(1);\n" +
" ^^^^^^^^^^^^^^^^^\n" +
"Type safety: The method methodx(Object) belongs to the raw type X.X2. References to generic type X<T>.X2<T> should be parameterized\n" +
"----------\n");
}
public void test001h_2() {
this.runConformTest(
new String[] {
"X.java",
"public class X<T> {\n" +
" class X2<T>{\n" +
" void methodx(T param){\n" +
" System.out.println(param);\n" +
" }\n" +
" }\n" +
" X<String>.X2<String> x;\n" +
" public static void main(String[] args) {\n" +
" X test = new X();\n" +
" test.x = new X<>().new X2<>();\n" +
" test.x.methodx(1);\n" +
" }\n" +
"}",
},
"1");
}
public void test001i() {
this.runNegativeTest(
new String[] {
"X.java",
"public class X<T> {\n" +
" class X2<K>{\n" +
" class X22<I>{\n" +
" void methodx(T param, K param2, I param3){\n" +
" System.out.println(param);\n" +
" }\n" +
" }\n" +
" }\n" +
" public static void main(String[] args) {\n" +
" X<String> test = new X<>();" +
" X<String>.X2<Integer>.X22<X<String>> x = new X<>().new X2<>().new X22<>();\n" +
" x.methodx(\"SUCCESS\", 1, test);\n" +
" }\n" +
"}",
},
"----------\n" +
"1. ERROR in X.java (at line 10)\n" +
" X<String> test = new X<>(); X<String>.X2<Integer>.X22<X<String>> x = new X<>().new X2<>().new X22<>();\n" +
" ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^\n" +
(this.complianceLevel < ClassFileConstants.JDK1_8 ?
"Type mismatch: cannot convert from X<Object>.X2<Object>.X22<X<String>> to X<String>.X2<Integer>.X22<X<String>>\n"
:
"Cannot infer type arguments for X22<>\n"
) +
"----------\n");
}
public void test002() {
this.runNegativeTest(
new String[] {
"X.java",
"public class X<T> {\n" +
" public static void main(String[] args) {\n" +
" X x = new X<>();\n" +
" x.testFunction(\"SUCCESS\");\n" +
" }\n" +
" public void testFunction(T param){\n" +
" System.out.println(param);\n" +
" }\n" +
"}",
},
"----------\n" +
"1. WARNING in X.java (at line 3)\n" +
" X x = new X<>();\n" +
" ^\n" +
"X is a raw type. References to generic type X<T> should be parameterized\n" +
"----------\n" +
"2. WARNING in X.java (at line 4)\n" +
" x.testFunction(\"SUCCESS\");\n" +
" ^^^^^^^^^^^^^^^^^^^^^^^^^\n" +
"Type safety: The method testFunction(Object) belongs to the raw type X. References to generic type X<T> should be parameterized\n" +
"----------\n");
}
public void test003() {
this.runConformTest(
new String[] {
"X.java",
"public class X<T> {\n" +
" public static void main(String[] args) {\n" +
" new X<>().testFunction(\"SUCCESS\");\n" +
" }\n" +
" public void testFunction(T param){\n" +
" System.out.println(param);\n" +
" }\n" +
"}",
},
"SUCCESS");
}
public void test004b() {
this.runNegativeTest(
new String[] {
"X.java",
"public class X<T> {\n" +
" class X2<U> {\n" +
" }\n" +
" public static void main(String[] args) {\n" +
" new X<>().new X2<>(){\n" +
" void newMethod(){\n" +
" }\n" +
" };\n" +
" }\n" +
"}",
},
this.complianceLevel < ClassFileConstants.JDK9 ?
"----------\n" +
"1. ERROR in X.java (at line 5)\n" +
" new X<>().new X2<>(){\n" +
" ^^\n" +
"\'<>\' cannot be used with anonymous classes\n" +
"----------\n":
"----------\n" +
"1. ERROR in X.java (at line 6)\n" +
" void newMethod(){\n" +
" ^^^^^^^^^^^\n" +
"The method newMethod() of type new X<Object>.X2<Object>(){} must override or implement a supertype method\n" +
"----------\n");
}
public void test004c() {
this.runConformTest(
new String[] {
"X.java",
"public class X<T> {\n" +
" class X2<U> {\n" +
" U f1;" +
" public void setF(U a){\n" +
" this.f1 = a;" +
" System.out.println(this.f1);\n" +
" }\n" +
" }\n" +
" public static void main(String[] args) {\n" +
" new X<>().new X2<Integer>(){\n" +
" void newMethod(){\n" +
" }\n" +
" }.setF(1);\n" +
" }\n" +
"}",
},
"1");
}
public void test006() {
this.runConformTest(
new String[] {
"X.java",
"class X1<T> {\n" +
" int abc = 1;\n" +
" public void testFunction(T param){\n" +
" System.out.println(param + \"X1\");\n" +
" }\n" +
"}\n" +
"public class X<T> extends X1<T> {\n" +
" public static void main(String[] args) {\n" +
" X1<String> x = new X<>();\n" +
" x.testFunction(\"SUCCESS\");\n" +
" }\n" +
" public void testFunction(T param){\n" +
" System.out.println(param);\n" +
" }\n" +
"}",
},
"SUCCESS");
}
// shows the difference between using <> and the raw type - different semantics
public void test007() {
this.runConformTest(
new String[] {
"X.java",
"public class X<T> {\n" +
" T field1;" +
" public X(T param){\n" +
" field1 = param;\n" +
" }\n" +
" public static void main(String[] args) {\n" +
" X.testFunction(new X<>(\"hello\").getField());\n" + // prints 1
" X.testFunction(new X(\"hello\").getField());\n" + //prints 2
" }\n" +
" public static void testFunction(String param){\n" +
" System.out.println(1);\n" +
" }\n" +
" public static void testFunction(Object param){\n" +
" System.out.println(2);\n" +
" }\n" +
" public T getField(){\n" +
" return field1;" +
" }\n" +
"}",
},
"1\n" +
"2");
}
public void test007a() {
if (this.complianceLevel < ClassFileConstants.JDK1_8) {
this.runNegativeTest(
new String[] {
"X.java",
"public class X<T> {\n" +
" public X(){\n" +
" }\n" +
" public X(T param){\n" +
" System.out.println(param);\n" +
" }\n" +
" public static void testFunction(X<String> param){\n" +
" System.out.println(\"SUCCESS\");\n" +
" }\n" +
" public static void main(String[] args) {\n" +
" X.testFunction(new X<>());\n" +
" X.testFunction(new X(\"hello\"));\n" +
" }\n" +
"}",
},
"----------\n" +
"1. ERROR in X.java (at line 11)\n" +
" X.testFunction(new X<>());\n" +
" ^^^^^^^^^^^^\n" +
"The method testFunction(X<String>) in the type X is not applicable for the arguments (X<Object>)\n" +
"----------\n" +
"2. WARNING in X.java (at line 12)\n" +
" X.testFunction(new X(\"hello\"));\n" +
" ^^^^^^^^^^^^^^\n" +
"Type safety: The constructor X(Object) belongs to the raw type X. References to generic type X<T> should be parameterized\n" +
"----------\n" +
"3. WARNING in X.java (at line 12)\n" +
" X.testFunction(new X(\"hello\"));\n" +
" ^^^^^^^^^^^^^^\n" +
"Type safety: The expression of type X needs unchecked conversion to conform to X<String>\n" +
"----------\n" +
"4. WARNING in X.java (at line 12)\n" +
" X.testFunction(new X(\"hello\"));\n" +
" ^\n" +
"X is a raw type. References to generic type X<T> should be parameterized\n" +
"----------\n");
} else {
this.runConformTest(
new String[] {
"X.java",
"public class X<T> {\n" +
" public X(){\n" +
" }\n" +
" public X(T param){\n" +
" System.out.println(param);\n" +
" }\n" +
" public static void testFunction(X<String> param){\n" +
" System.out.println(\"SUCCESS\");\n" +
" }\n" +
" public static void main(String[] args) {\n" +
" X.testFunction(new X<>());\n" +
" X.testFunction(new X(\"hello\"));\n" +
" }\n" +
"}",
},
"SUCCESS\n" +
"hello\n" +
"SUCCESS");
}
}
//shows the difference between using <> and the raw type - different semantics
public void test008() {
this.runNegativeTest(
new String[] {
"X.java",
"public class X<T> {\n" +
" T field1;\n" +
" public X(T param){\n" +
" field1 = param;\n" +
" }\n" +
" public static void main(String[] args) {\n" +
" X<?> x1 = new X(1).get(\"\");\n" + // ok - passing String where Object is expected
" X<?> x2 = new X<>(1).get(\"\");\n" + // bad - passing String where Integer is expected
" }\n" +
" public X<T> get(T t){\n" +
" return this;" +
" }\n" +
"}",
},
"----------\n" +
"1. WARNING in X.java (at line 7)\n" +
" X<?> x1 = new X(1).get(\"\");\n" +
" ^^^^^^^^\n" +
"Type safety: The constructor X(Object) belongs to the raw type X. References to generic type X<T> should be parameterized\n" +
"----------\n" +
"2. WARNING in X.java (at line 7)\n" +
" X<?> x1 = new X(1).get(\"\");\n" +
" ^^^^^^^^^^^^^^^^\n" +
"Type safety: The method get(Object) belongs to the raw type X. References to generic type X<T> should be parameterized\n" +
"----------\n" +
"3. WARNING in X.java (at line 7)\n" +
" X<?> x1 = new X(1).get(\"\");\n" +
" ^\n" +
"X is a raw type. References to generic type X<T> should be parameterized\n" +
"----------\n" +
"4. ERROR in X.java (at line 8)\n" +
" X<?> x2 = new X<>(1).get(\"\");\n" +
" ^^^\n" +
"The method get(Integer) in the type X<Integer> is not applicable for the arguments (String)\n" +
"----------\n");
}
public void test0014() {
this.runConformTest(
new String[] {
"X.java",
"public class X<J,K> {\n" +
" public static void main(String[] args) {\n" +
" X<String,Integer> x = new X<>();\n" +
" x.testFunction(\"SUCCESS\", 123);\n" +
" }\n" +
" public void testFunction(J param, K param2){\n" +
" System.out.println(param);\n" +
" System.out.println(param2);\n" +
" }\n" +
"}",
},
"SUCCESS\n" +
"123");
}
public void test0014a() {
this.runNegativeTest(
new String[] {
"X.java",
"public class X<J,K> {\n" +
" public static void main(String[] args) {\n" +
" X<String,Integer> x = new X<>();\n" +
" x.testFunction(123, \"SUCCESS\");\n" +
" }\n" +
" public void testFunction(J param, K param2){\n" +
" System.out.println(param);\n" +
" System.out.println(param2);\n" +
" }\n" +
"}",
},
"----------\n" +
"1. ERROR in X.java (at line 4)\n" +
" x.testFunction(123, \"SUCCESS\");\n" +
" ^^^^^^^^^^^^\n" +
"The method testFunction(String, Integer) in the type X<String,Integer> is not applicable for the arguments (int, String)\n" +
"----------\n");
}
public void test0015() {
this.runConformTest(
new String[] {
"X.java",
"public class X<T> {\n" +
" X(){\n" +
" System.out.println(\"const.1\");\n" +
" }\n" +
" X (T t) {\n" +
" System.out.println(\"const.2\");\n" +
" }\n" +
" public static void main(String[] args) {\n" +
" X<String> x = new X<>();\n" +
" X<String> x2 = new X<>(\"\");\n" +
" }\n" +
"}",
},
"const.1\nconst.2");
}
// To verify that <> cannot be used with explicit type arguments to generic constructor.
public void test0016() {
this.runNegativeTest(
new String[] {
"X.java",
"public class X<T> {\n" +
" <E> X(){\n" +
" System.out.println(\"const.1\");\n" +
" }\n" +
" <K,J> X (Integer i) {\n" +
" System.out.println(\"const.2\");\n" +
" }\n" +
" public static void main(String[] args) {\n" +
" X<String> x = new <String>X<>();\n" +
" X<String> x2 = new <String, Integer>X<>(1);\n" +
" }\n" +
"}",
},
"----------\n" +
"1. ERROR in X.java (at line 9)\n" +
" X<String> x = new <String>X<>();\n" +
" ^^^^^^\n" +
"Explicit type arguments cannot be used with \'<>\' in an allocation expression\n" +
"----------\n" +
"2. ERROR in X.java (at line 10)\n" +
" X<String> x2 = new <String, Integer>X<>(1);\n" +
" ^^^^^^^^^^^^^^^\n" +
"Explicit type arguments cannot be used with \'<>\' in an allocation expression\n" +
"----------\n");
}
public void test0016a() {
this.runConformTest( // javac fails to compile this, looks buggy
new String[] {
"X.java",
"public class X<T> {\n" +
" <E> X(){\n" +
" System.out.println(\"const.1\");\n" +
" }\n" +
" <K,J> X (Integer i) {\n" +
" System.out.println(\"const.2\");\n" +
" }\n" +
" public static void main(String[] args) {\n" +
" X<String> x = new X<>();\n" +
" X<String> x2 = new X<>(1);\n" +
" }\n" +
"}",
},
"const.1\nconst.2");
}
// To verify that <> cannot be used with explicit type arguments to a generic constructor.
public void test0016b() {
this.runNegativeTest(
new String[] {
"X.java",
"public class X<T> {\n" +
" X<String> x;\n" +
" X<String> x2;\n" +
" <E> X(){\n" +
" System.out.println(\"const.1\");\n" +
" }\n" +
" <K,J> X (Integer i) {\n" +
" System.out.println(\"const.2\");\n" +
" }\n" +
" public static void main(String[] args) {\n" +
" X<Integer> test = new <String>X<>();\n" +
" test.x = new <String>X<>();\n" +
" test.x2 = new <String, Integer>X<>(1);\n" +
" }\n" +
"}",
},
"----------\n" +
"1. ERROR in X.java (at line 11)\n" +
" X<Integer> test = new <String>X<>();\n" +
" ^^^^^^\n" +
"Explicit type arguments cannot be used with \'<>\' in an allocation expression\n" +
"----------\n" +
"2. ERROR in X.java (at line 12)\n" +
" test.x = new <String>X<>();\n" +
" ^^^^^^\n" +
"Explicit type arguments cannot be used with \'<>\' in an allocation expression\n" +
"----------\n" +
"3. ERROR in X.java (at line 13)\n" +
" test.x2 = new <String, Integer>X<>(1);\n" +
" ^^^^^^^^^^^^^^^\n" +
"Explicit type arguments cannot be used with \'<>\' in an allocation expression\n" +
"----------\n");
}
//To verify that a parameterized invocation of a generic constructor works even if <> is used
//to elide class type parameters. This test handles fields
public void test0016c() {
this.runConformTest(
new String[] {
"X.java",
"public class X<T> {\n" +
" X<String> x;\n" +
" X<String> x2;\n" +
" <E> X(){\n" +
" System.out.println(\"const.1\");\n" +
" }\n" +
" <K,J> X (Integer i) {\n" +
" System.out.println(\"const.2\");\n" +
" }\n" +
" public static void main(String[] args) {\n" +
" X<Integer> test = new X<>();\n" +
" test.x = new X<>();\n" +
" test.x2 = new X<>(1);\n" +
" }\n" +
"}",
},
"const.1\nconst.1\nconst.2");
}
// To verify that <> cannot be used with explicit type arguments to generic constructor.
public void test0017() {
this.runNegativeTest(
new String[] {
"X.java",
"public class X<T> {\n" +
" X(int i){\n" +
" System.out.println(\"const.1\");\n" +
" }\n" +
" <K,J> X (Integer i) {\n" +
" System.out.println(\"const.2\");\n" +
" }\n" +
" public static void main(String[] args) {\n" +
" X<String> x = new X<>(1);\n" +
" X<String> x2 = new <String, Integer>X<>(1);\n" +
" Integer i = 1;\n" +
" X<String> x3 = new <String, Integer>X<>(i);\n" +
" }\n" +
"}",
},
"----------\n" +
"1. ERROR in X.java (at line 10)\n" +
" X<String> x2 = new <String, Integer>X<>(1);\n" +
" ^^^^^^^^^^^^^^^\n" +
"Explicit type arguments cannot be used with \'<>\' in an allocation expression\n" +
"----------\n" +
"2. ERROR in X.java (at line 12)\n" +
" X<String> x3 = new <String, Integer>X<>(i);\n" +
" ^^^^^^^^^^^^^^^\n" +
"Explicit type arguments cannot be used with \'<>\' in an allocation expression\n" +
"----------\n"
);
}
// To verify that a parameterized invocation of a non-generic constructor works even if <> is used
// to elide class type parameters.
public void test0017a() {
this.runConformTest(
new String[] {
"X.java",
"public class X<T> {\n" +
" X(int i){\n" +
" System.out.println(\"const.1\");\n" +
" }\n" +
" <K,J> X (Integer i) {\n" +
" System.out.println(\"const.2\");\n" +
" }\n" +
" public static void main(String[] args) {\n" +
" X<String> x = new X<>(1);\n" +
" X<String> x2 = new X<>(1);\n" +
" Integer i = 1;\n" +
" X<String> x3 = new X<>(i);\n" +
" }\n" +
"}",
},
"const.1\nconst.1\nconst.2");
}
// To verify that the correct constructor is found by parameter substitution in the diamond case
public void test0018() {
this.runConformTest(
new String[] {
"X.java",
"public class X<T> {\n" +
" X(T t){\n" +
" System.out.println(\"const.1\");\n" +
" }\n" +
" X (T t, Integer i) {\n" +
" System.out.println(\"const.2\");\n" +
" }\n" +
" public static void main(String[] args) {\n" +
" X x = new X<>(\"\");\n" +
" X x2 = new X<>(\"\",1);\n" +
" }\n" +
"}",
},
"const.1\nconst.2");
}
// To verify that the correct constructor is found by parameter substitution
// in the diamond case -- fields
public void test0018b() {
this.runConformTest(
new String[] {
"X.java",
"public class X<T> {\n" +
" X f1;\n" +
" X f2;\n" +
" X(T t){\n" +
" System.out.println(\"const.1\");\n" +
" }\n" +
" X (T t, Integer i) {\n" +
" System.out.println(\"const.2\");\n" +
" }\n" +
" public static void main(String[] args) {\n" +
" X x = new X<>(\"\");\n" +
" x.f1 = new X<>(\"\");\n" +
" x.f2 = new X<>(\"\",1);\n" +
" }\n" +
"}",
},
"const.1\nconst.1\nconst.2");
}
public void test0019() {
this.runNegativeTest(
new String[] {
"X.java",
"public class X {\n" +
" String s = new String<>(\"junk\");\n" +
"}\n",
},
"----------\n" +
"1. ERROR in X.java (at line 2)\n" +
" String s = new String<>(\"junk\");\n" +
" ^^^^^^\n" +
"The type String is not generic; it cannot be parameterized with arguments <>\n" +
"----------\n");
}
// check inference at method argument position.
public void test0020() {
this.runNegativeTest(
new String[] {
"X.java",
"public class X<T> {\n" +
" Zork z;\n" +
" public X(T t) {}\n" +
" int f(X<String> p) {return 0;}\n" +
" int x = f(new X<>(\"\"));\n" +
"}\n",
},
"----------\n" +
"1. ERROR in X.java (at line 2)\n" +
" Zork z;\n" +
" ^^^^\n" +
"Zork cannot be resolved to a type\n" +
"----------\n");
}
//check inference at method argument position.
public void test0021() {
if (this.complianceLevel < ClassFileConstants.JDK1_8) {
this.runNegativeTest(
new String[] {
"X.java",
"import java.util.List;\n" +
"import java.util.ArrayList;\n" +
"class X<T> {\n" +
" public X(T t) {}\n" +
" int f(List<String> p) {return 0;}\n" +
" int x = f(new ArrayList<>());\n" +
"}\n",
},
"----------\n" +
"1. ERROR in X.java (at line 6)\n" +
" int x = f(new ArrayList<>());\n" +
" ^\n" +
"The method f(List<String>) in the type X<T> is not applicable for the arguments (ArrayList<Object>)\n" +
"----------\n");
} else {
this.runNegativeTest(
new String[] {
"X.java",
"import java.util.List;\n" +
"import java.util.ArrayList;\n" +
"class X<T> {\n" +
" public X(T t) {}\n" +
" int f(List<String> p) {return 0;}\n" +
" int x = f(new ArrayList<>());\n" +
"}\n",
},
"");
}
}
public void test0022() {
this.runConformTest(
new String[] {
"X.java",
"import java.util.HashMap;\n" +
"import java.util.Map;\n" +
"\n" +
"class StringKeyHashMap<V> extends HashMap<String, V> { \n" +
"}\n" +
"\n" +
"class IntegerValueHashMap<K> extends HashMap<K, Integer> { \n" +
"}\n" +
"\n" +
"public class X {\n" +
" Map<String, Integer> m1 = new StringKeyHashMap<>();\n" +
" Map<String, Integer> m2 = new IntegerValueHashMap<>();\n" +
"}\n"
},
"");
}
public void test0023() {
this.runNegativeTest(
new String[] {
"X.java",
"import java.util.HashMap;\n" +
"import java.util.Map;\n" +
"\n" +
"class StringKeyHashMap<V> extends HashMap<String, V> { \n" +
"}\n" +
"\n" +
"class IntegerValueHashMap<K> extends HashMap<K, Integer> { \n" +
"}\n" +
"\n" +
"public class X {\n" +
" Map<String, Integer> m1 = new StringKeyHashMap<>(10);\n" +
" Map<String, Integer> m2 = new IntegerValueHashMap<>();\n" +
"}\n"
},
"----------\n" +
"1. WARNING in X.java (at line 4)\n" +
" class StringKeyHashMap<V> extends HashMap<String, V> { \n" +
" ^^^^^^^^^^^^^^^^\n" +
"The serializable class StringKeyHashMap does not declare a static final serialVersionUID field of type long\n" +
"----------\n" +
"2. WARNING in X.java (at line 7)\n" +
" class IntegerValueHashMap<K> extends HashMap<K, Integer> { \n" +
" ^^^^^^^^^^^^^^^^^^^\n" +
"The serializable class IntegerValueHashMap does not declare a static final serialVersionUID field of type long\n" +
"----------\n" +
"3. ERROR in X.java (at line 11)\n" +
" Map<String, Integer> m1 = new StringKeyHashMap<>(10);\n" +
" ^^^^^^^^^^^^^^^^^^^^^^^^^^\n" +
"Cannot infer type arguments for StringKeyHashMap<>\n" +
"----------\n");
}
// check inference at return expression.
public void test0024() {
this.runNegativeTest(
new String[] {
"X.java",
"import java.util.List;\n" +
"import java.util.ArrayList;\n" +
"class X<T> {\n" +
" public X() {}\n" +
" X<String> f(List<String> p) {return new X<>();}\n" +
"}\n",
},
"----------\n" +
"1. WARNING in X.java (at line 2)\n" +
" import java.util.ArrayList;\n" +
" ^^^^^^^^^^^^^^^^^^^\n" +
"The import java.util.ArrayList is never used\n" +
"----------\n");
}
// check inference at cast expression.
public void test0025() {
this.runNegativeTest(
new String[] {
"X.java",
"import java.util.List;\n" +
"import java.util.ArrayList;\n" +
"class X<T> {\n" +
" public X() {}\n" +
" void f(List<String> p) { Object o = (X<String>) new X<>();}\n" +
"}\n",
},
"----------\n" +
"1. ERROR in X.java (at line 5)\n" +
" void f(List<String> p) { Object o = (X<String>) new X<>();}\n" +
" ^^^^^^^^^^^^^^^^^^^^^\n" +
"Cannot cast from X<Object> to X<String>\n" +
"----------\n");
}
// Test various scenarios.
public void test0026() {
this.runNegativeTest(
new String[] {
"X.java",
"import java.util.List;\n" +
"import java.util.ArrayList;\n" +
"public class X<T> {\n" +
" X(T t) {}\n" +
" X(String s) {}\n" +
" X(List<?> l) {}\n" +
" X<T> idem() { return this; }\n" +
" X<Number> x = new X<>(1);\n" +
" X<Integer> x2 = new X<>(1);\n" +
" List<?> list = new ArrayList<>();\n" +
" X<?> x3 = new X<>(1);\n" +
" X<Object> x4 = new X<>(1).idem();\n" +
" X<Object> x5 = new X<>(1);\n" +
" int m(X<String> xs) { return 0; }\n" +
" int i = m(new X<>(\"\"));\n" +
" X<?> x6 = new X<>(list);\n" +
"}\n"
},
this.complianceLevel < ClassFileConstants.JDK1_8 ?
"----------\n" +
"1. ERROR in X.java (at line 8)\n" +
" X<Number> x = new X<>(1);\n" +
" ^^^^^^^^^^\n" +
"Type mismatch: cannot convert from X<Integer> to X<Number>\n" +
"----------\n" +
"2. ERROR in X.java (at line 12)\n" +
" X<Object> x4 = new X<>(1).idem();\n" +
" ^^^^^^^^^^^^^^^^^\n" +
"Type mismatch: cannot convert from X<Integer> to X<Object>\n" +
"----------\n" +
"3. ERROR in X.java (at line 13)\n" +
" X<Object> x5 = new X<>(1);\n" +
" ^^^^^^^^^^\n" +
"Type mismatch: cannot convert from X<Integer> to X<Object>\n" +
"----------\n" +
"4. ERROR in X.java (at line 15)\n" +
" int i = m(new X<>(\"\"));\n" +
" ^\n" +
"The method m(X<String>) in the type X<T> is not applicable for the arguments (X<Object>)\n" +
"----------\n" :
"----------\n" +
"1. ERROR in X.java (at line 12)\n" +
" X<Object> x4 = new X<>(1).idem();\n" +
" ^^^^^^^^^^^^^^^^^\n" +
"Type mismatch: cannot convert from X<Integer> to X<Object>\n" +
"----------\n");
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=344655
public void test0027() {
this.runNegativeTest(
new String[] {
"X.java",
"public class X<T> {\n" +
" class Y<U> {\n" +
" <K,J> Y (Integer i) {\n" +
" }\n" +
" }\n" +
"\n" +
" <K,J> X (Integer i) {\n" +
" }\n" +
"\n" +
" public static void main(String[] args) {\n" +
" X<String> x = new <String, Integer> X<>(1);\n" +
" X<String> x2 = x.new <String, Integer> Y<>(1);\n" +
" }\n" +
"}\n",
},
"----------\n" +
"1. ERROR in X.java (at line 11)\n" +
" X<String> x = new <String, Integer> X<>(1);\n" +
" ^^^^^^^^^^^^^^^\n" +
"Explicit type arguments cannot be used with \'<>\' in an allocation expression\n" +
"----------\n" +
"2. ERROR in X.java (at line 12)\n" +
" X<String> x2 = x.new <String, Integer> Y<>(1);\n" +
" ^^^^^^^^^^^^^^^\n" +
"Explicit type arguments cannot be used with \'<>\' in an allocation expression\n" +
"----------\n"
);
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=345239
public void test0028() {
String[] testFiles = new String[] {
"X.java",
"public class X<T> {\n" +
" X<String> x = new X<> () {}\n;" +
" class Y<U> {\n" +
" }\n" +
" X<String>.Y<String> y = x.new Y<>() {};\n" +
"}\n"
};
if (this.complianceLevel < ClassFileConstants.JDK9) {
this.runNegativeTest(
testFiles,
"----------\n" +
"1. ERROR in X.java (at line 2)\n" +
" X<String> x = new X<> () {}\n" +
" ^\n" +
"\'<>\' cannot be used with anonymous classes\n" +
"----------\n" +
"2. ERROR in X.java (at line 5)\n" +
" X<String>.Y<String> y = x.new Y<>() {};\n" +
" ^\n" +
"\'<>\' cannot be used with anonymous classes\n" +
"----------\n");
} else {
this.runConformTest(testFiles);
}
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=345359
public void test0029() {
this.runNegativeTest(
new String[] {
"X.java",
"public class X<T> {\n" +
" X(T t) {}\n" +
" X<String> f2 = new X<>(new Y()); \n" +
"}\n"
},
"----------\n" +
"1. ERROR in X.java (at line 3)\n" +
" X<String> f2 = new X<>(new Y()); \n" +
" ^\n" +
"Y cannot be resolved to a type\n" +
"----------\n");
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=345359
public void test0029a() {
this.runNegativeTest(
new String[] {
"X.java",
"public class X {\n" +
" class I<T> {\n" +
" I(T t) {}\n" +
" }\n" +
" X.I<String> f = new X().new I<>(new Y()); \n" +
"}\n"
},
"----------\n" +
"1. ERROR in X.java (at line 5)\n" +
" X.I<String> f = new X().new I<>(new Y()); \n" +
" ^\n" +
"Y cannot be resolved to a type\n" +
"----------\n");
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=346026
public void test0030() {
this.runNegativeTest(
new String[] {
"X.java",
"class C {}\n" +
"interface I {}\n" +
"public class X<T extends C & I> {\n" +
" X() {}\n" +
" X f = new X<>();\n" +
"}\n"
},
"----------\n" +
"1. WARNING in X.java (at line 5)\n" +
" X f = new X<>();\n" +
" ^\n" +
"X is a raw type. References to generic type X<T> should be parameterized\n" +
"----------\n");
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=346026
public void test0031() {
this.runConformTest(
new String[] {
"X.java",
"class C {}\n" +
"interface I {}\n" +
"public class X<T extends C & I> {\n" +
" X() {}\n" +
" X<?> f = new X<>();\n" +
"}\n"
},
"");
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=346026
public void test0032() {
this.runConformTest(
new String[] {
"X.java",
"class C {}\n" +
"interface I {}\n" +
"public class X<T extends C & I> {\n" +
" static <U extends C & I> X<U> getX() {\n" +
" return null;\n" +
" }\n" +
" X<?> f2 = getX();\n" +
"}\n"
},
"");
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=346026
public void test0033() {
this.runNegativeTest(
new String[] {
"X.java",
"class C {}\n" +
"interface I {}\n" +
"public class X<T extends C & I> {\n" +
" static <U extends C & I> X<U> getX() {\n" +
" return null;\n" +
" }\n" +
" X f2 = getX();\n" +
"}\n"
},
"----------\n" +
"1. WARNING in X.java (at line 7)\n" +
" X f2 = getX();\n" +
" ^\n" +
"X is a raw type. References to generic type X<T> should be parameterized\n" +
"----------\n");
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=345559
public void test0034() {
this.runNegativeTest(
new String[] {
"X.java",
"public class X<T> {\n" +
" X(T t) {}\n" +
" X() {}\n" +
" void foo(T a) {\n" +
" System.out.println(a);\n" +
" }\n" +
" class Y<K>{\n" +
" Y(T t,K k) {}\n" +
" }\n" +
" public static void main(String[] args) {\n" +
" X<Integer> x1 = new X<>(1,1);\n" +
" X<Integer> x2 = new X<>(1);\n" +
" X<Integer> x3 = new X<>();\n" +
" X<Integer>.Y<String> y1 = new X<>(1,1).new Y<>();\n" +
" X<Integer>.Y<String> y2 = new X<>(1,1).new Y<>(1);\n" +
" X<Integer>.Y<String> y3 = new X<>(1).new Y<>(1);\n" +
" X<Integer>.Y<String> y4 = new X<>(1).new Y<>(\"\",\"\");\n" +
" X<Integer>.Y<String> y5 = new X<>(1).new Y<>(1,\"\");\n" +
" X<Integer>.Y<String> y6 = new X<>().new Y<>(1,\"\");\n" +
" X<Integer>.Y<String> y7 = new X<>().new Y<>(1,1);\n" +
" }\n" +
"}\n"
},
"----------\n" +
"1. ERROR in X.java (at line 11)\n" +
" X<Integer> x1 = new X<>(1,1);\n" +
" ^^^^^^^^^^^^\n" +
"Cannot infer type arguments for X<>\n" +
"----------\n" +
"2. ERROR in X.java (at line 14)\n" +
" X<Integer>.Y<String> y1 = new X<>(1,1).new Y<>();\n" +
" ^^^^^^^^^^^^\n" +
"Cannot infer type arguments for X<>\n" +
"----------\n" +
"3. ERROR in X.java (at line 15)\n" +
" X<Integer>.Y<String> y2 = new X<>(1,1).new Y<>(1);\n" +
" ^^^^^^^^^^^^\n" +
"Cannot infer type arguments for X<>\n" +
"----------\n" +
"4. ERROR in X.java (at line 16)\n" +
" X<Integer>.Y<String> y3 = new X<>(1).new Y<>(1);\n" +
" ^^^^^^^^^^^^^^^^^^^^^\n" +
"Cannot infer type arguments for Y<>\n" +
"----------\n" +
"5. ERROR in X.java (at line 17)\n" +
" X<Integer>.Y<String> y4 = new X<>(1).new Y<>(\"\",\"\");\n" +
" ^^^^^^^^^^^^^^^^^^^^^^^^^\n" +
"Cannot infer type arguments for Y<>\n" +
"----------\n" +
"6. ERROR in X.java (at line 19)\n" +
" X<Integer>.Y<String> y6 = new X<>().new Y<>(1,\"\");\n" +
" ^^^^^^^^^^^^^^^^^^^^^^^\n" +
(this.complianceLevel < ClassFileConstants.JDK1_8 ?
"Type mismatch: cannot convert from X<Object>.Y<String> to X<Integer>.Y<String>\n"
:
"Cannot infer type arguments for Y<>\n"
) +
"----------\n" +
"7. ERROR in X.java (at line 20)\n" +
" X<Integer>.Y<String> y7 = new X<>().new Y<>(1,1);\n" +
" ^^^^^^^^^^^^^^^^^^^^^^\n" +
(this.complianceLevel < ClassFileConstants.JDK1_8 ?
"Type mismatch: cannot convert from X<Object>.Y<Integer> to X<Integer>.Y<String>\n"
:
"Cannot infer type arguments for Y<>\n"
) +
"----------\n");
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=345559
public void test0034b() {
this.runNegativeTest(
new String[] {
"X.java",
"public class X<T> {\n" +
" X(T t) {}\n" +
" X() {}\n" +
" void foo(T a) {\n" +
" System.out.println(a);\n" +
" }\n" +
" class Y<K>{\n" +
" Y(T t,K k) {}\n" +
" Y(K k) {}\n" +
" }\n" +
" public static void main(String[] args) {\n" +
" X<String>.Y<String> y42 = new X<>(\"\").new Y<>(\"\");\n" +
" X<String>.Y<String> y41 = new X<>(\"\").new Y<>(\"\",\"\");\n" +
" X<Integer>.Y<String> y4 = new X<>(1).new Y<>(\"\",\"\");\n" +
" }\n" +
"}\n"
},
"----------\n" +
"1. ERROR in X.java (at line 14)\n" +
" X<Integer>.Y<String> y4 = new X<>(1).new Y<>(\"\",\"\");\n" +
" ^^^^^^^^^^^^^^^^^^^^^^^^^\n" +
"Cannot infer type arguments for Y<>\n" +
"----------\n");
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=345559
public void test0035() {
this.runNegativeTest(
new String[] {
"X.java",
"public class X<T> {\n" +
" X(T t) {}\n" +
" X() {}\n" +
" @SafeVarargs\n" +
" X(String abc, String abc2, T... t) {}\n" +
" void foo(T a) {\n" +
" System.out.println(a);\n" +
" }\n" +
" class Y<K>{\n" +
" @SafeVarargs\n" +
" Y(T t,String abc, K... k) {}\n" +
" }\n" +
" public static void main(String[] args) {\n" +
" X<Integer> x1 = new X<>(1,1);\n" +
" X<Integer> x2 = new X<>(1);\n" +
" X<Integer> x3 = new X<>();\n" +
" X<Integer> x4 = new X<>(\"\",\"\");\n" +
" X<Integer> x5 = new X<>(\"\",\"\",\"\");\n" +
" X<Integer> x6 = new X<>(\"\",\"\",1);\n" +
" X<Integer>.Y<String> y1 = new X<>(1,1).new Y<>();\n" +
" X<Integer>.Y<String> y2 = new X<>(\"\",1).new Y<>(\"\");\n" +
" X<Integer>.Y<String> y3 = new X<>(1).new Y<>(1);\n" +
" X<Integer>.Y<String> y4 = new X<>(1).new Y<>(1,\"\");\n" +
" X<Integer>.Y<String> y5 = new X<>(1).new Y<>(1,\"\",\"\");\n" +
" X<Integer>.Y<String> y6 = new X<>().new Y<>(1,\"\",1);\n" +
" X<Integer>.Y<String> y7 = new X<>().new Y<>(\"\",\"\",1);\n" +
" }\n" +
"}\n"
},
"----------\n" +
"1. ERROR in X.java (at line 14)\n" +
" X<Integer> x1 = new X<>(1,1);\n" +
" ^^^^^^^^^^^^\n" +
"Cannot infer type arguments for X<>\n" +
"----------\n" +
"2. ERROR in X.java (at line 18)\n" +
" X<Integer> x5 = new X<>(\"\",\"\",\"\");\n" +
" ^^^^^^^^^^^^^^^^^\n" +
(this.complianceLevel < ClassFileConstants.JDK1_8 ?
"Type mismatch: cannot convert from X<String> to X<Integer>\n"
:
"Cannot infer type arguments for X<>\n"
) +
"----------\n" +
"3. ERROR in X.java (at line 20)\n" +
" X<Integer>.Y<String> y1 = new X<>(1,1).new Y<>();\n" +
" ^^^^^^^^^^^^\n" +
"Cannot infer type arguments for X<>\n" +
"----------\n" +
"4. ERROR in X.java (at line 21)\n" +
" X<Integer>.Y<String> y2 = new X<>(\"\",1).new Y<>(\"\");\n" +
" ^^^^^^^^^^^^^\n" +
"Cannot infer type arguments for X<>\n" +
"----------\n" +
"5. ERROR in X.java (at line 22)\n" +
" X<Integer>.Y<String> y3 = new X<>(1).new Y<>(1);\n" +
" ^^^^^^^^^^^^^^^^^^^^^\n" +
"Cannot infer type arguments for Y<>\n" +
"----------\n" +
"6. ERROR in X.java (at line 25)\n" +
" X<Integer>.Y<String> y6 = new X<>().new Y<>(1,\"\",1);\n" +
" ^^^^^^^^^^^^^^^^^^^^^^^^^\n" +
(this.complianceLevel < ClassFileConstants.JDK1_8 ?
"Type mismatch: cannot convert from X<Object>.Y<Integer> to X<Integer>.Y<String>\n"
:
"Cannot infer type arguments for Y<>\n"
) +
"----------\n" +
"7. ERROR in X.java (at line 26)\n" +
" X<Integer>.Y<String> y7 = new X<>().new Y<>(\"\",\"\",1);\n" +
" ^^^^^^^^^^^^^^^^^^^^^^^^^^\n" +
(this.complianceLevel < ClassFileConstants.JDK1_8 ?
"Type mismatch: cannot convert from X<Object>.Y<Integer> to X<Integer>.Y<String>\n"
:
"Cannot infer type arguments for Y<>\n"
) +
"----------\n");
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=345559
public void test0036() {
this.runNegativeTest(
new String[] {
"X.java",
"public class X<T> {\n" +
" X(T t) {}\n" +
" X() {}\n" +
" @SafeVarargs\n" +
" X(String abc, String abc2, T... t) {}\n" +
" void foo(T a) {\n" +
" System.out.println(a);\n" +
" }\n" +
" class Y<K>{\n" +
" @SafeVarargs\n" +
" Y(T t,String abc, K... k) {}\n" +
" }\n" +
" X<Integer> x1 = new X<>(1,1);\n" +
" X<Integer> x2 = new X<>(1);\n" +
" X<Integer> x3 = new X<>();\n" +
" X<Integer> x4 = new X<>(\"\",\"\");\n" +
" X<Integer> x5 = new X<>(\"\",\"\",\"\");\n" +
" X<Integer> x6 = new X<>(\"\",\"\",1);\n" +
" X<Integer>.Y<String> y1 = new X<>(1,1).new Y<>();\n" +
" X<Integer>.Y<String> y2 = new X<>(\"\",1).new Y<>(\"\");\n" +
" X<Integer>.Y<String> y3 = new X<>(1).new Y<>(1);\n" +
" X<Integer>.Y<String> y4 = new X<>(1).new Y<>(1,\"\");\n" +
" X<Integer>.Y<String> y5 = new X<>(1).new Y<>(1,\"\",\"\");\n" +
" X<Integer>.Y<String> y6 = new X<>().new Y<>(1,\"\",1);\n" +
" X<Integer>.Y<String> y7 = new X<>().new Y<>(\"\",\"\",1);\n" +
"}\n"
},
"----------\n" +
"1. ERROR in X.java (at line 13)\n" +
" X<Integer> x1 = new X<>(1,1);\n" +
" ^^^^^^^^^^^^\n" +
"Cannot infer type arguments for X<>\n" +
"----------\n" +
"2. ERROR in X.java (at line 17)\n" +
" X<Integer> x5 = new X<>(\"\",\"\",\"\");\n" +
" ^^^^^^^^^^^^^^^^^\n" +
(this.complianceLevel < ClassFileConstants.JDK1_8 ?
"Type mismatch: cannot convert from X<String> to X<Integer>\n"
:
"Cannot infer type arguments for X<>\n"
) +
"----------\n" +
"3. ERROR in X.java (at line 19)\n" +
" X<Integer>.Y<String> y1 = new X<>(1,1).new Y<>();\n" +
" ^^^^^^^^^^^^\n" +
"Cannot infer type arguments for X<>\n" +
"----------\n" +
"4. ERROR in X.java (at line 20)\n" +
" X<Integer>.Y<String> y2 = new X<>(\"\",1).new Y<>(\"\");\n" +
" ^^^^^^^^^^^^^\n" +
"Cannot infer type arguments for X<>\n" +
"----------\n" +
"5. ERROR in X.java (at line 21)\n" +
" X<Integer>.Y<String> y3 = new X<>(1).new Y<>(1);\n" +
" ^^^^^^^^^^^^^^^^^^^^^\n" +
"Cannot infer type arguments for Y<>\n" +
"----------\n" +
"6. ERROR in X.java (at line 24)\n" +
" X<Integer>.Y<String> y6 = new X<>().new Y<>(1,\"\",1);\n" +
" ^^^^^^^^^^^^^^^^^^^^^^^^^\n" +
(this.complianceLevel < ClassFileConstants.JDK1_8 ?
"Type mismatch: cannot convert from X<Object>.Y<Integer> to X<Integer>.Y<String>\n"
:
"Cannot infer type arguments for Y<>\n"
) +
"----------\n" +
"7. ERROR in X.java (at line 25)\n" +
" X<Integer>.Y<String> y7 = new X<>().new Y<>(\"\",\"\",1);\n" +
" ^^^^^^^^^^^^^^^^^^^^^^^^^^\n" +
(this.complianceLevel < ClassFileConstants.JDK1_8 ?
"Type mismatch: cannot convert from X<Object>.Y<Integer> to X<Integer>.Y<String>\n"
:
"Cannot infer type arguments for Y<>\n"
) +
"----------\n");
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=345559
public void test0034a() {
this.runNegativeTest(
new String[] {
"X.java",
"public class X<T> {\n" +
" X(T t) {}\n" +
" X() {}\n" +
" void foo(T a) {\n" +
" System.out.println(a);\n" +
" }\n" +
" public static void main(String[] args) {\n" +
" X<Integer> x1 = new X<>(1,1);\n" +
" X<Integer> x2 = new X<>(1);\n" +
" X<Integer> x3 = new X<>();\n" +
" }\n" +
"}\n"
},
"----------\n" +
"1. ERROR in X.java (at line 8)\n" +
" X<Integer> x1 = new X<>(1,1);\n" +
" ^^^^^^^^^^^^\n" +
"Cannot infer type arguments for X<>\n" +
"----------\n");
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=345559
public void test0035a() {
this.runNegativeTest(
new String[] {
"X.java",
"public class X<T> {\n" +
" X(T t) {}\n" +
" X() {}\n" +
" @SafeVarargs\n" +
" X(String abc, String abc2, T... t) {}\n" +
" void foo(T a) {\n" +
" System.out.println(a);\n" +
" }\n" +
" public static void main(String[] args) {\n" +
" X<Integer> x1 = new X<>(1,1);\n" +
" X<Integer> x2 = new X<>(1);\n" +
" X<Integer> x3 = new X<>();\n" +
" X<Integer> x4 = new X<>(\"\",\"\");\n" +
" X<Integer> x5 = new X<>(\"\",\"\",\"\");\n" +
" X<Integer> x6 = new X<>(\"\",\"\",1);\n" +
" }\n" +
"}\n"
},
"----------\n" +
"1. ERROR in X.java (at line 10)\n" +
" X<Integer> x1 = new X<>(1,1);\n" +
" ^^^^^^^^^^^^\n" +
"Cannot infer type arguments for X<>\n" +
"----------\n" +
"2. ERROR in X.java (at line 14)\n" +
" X<Integer> x5 = new X<>(\"\",\"\",\"\");\n" +
" ^^^^^^^^^^^^^^^^^\n" +
(this.complianceLevel < ClassFileConstants.JDK1_8 ?
"Type mismatch: cannot convert from X<String> to X<Integer>\n"
:
"Cannot infer type arguments for X<>\n"
) +
"----------\n");
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=345559
public void test0036a() {
this.runNegativeTest(
new String[] {
"X.java",
"public class X<T> {\n" +
" X(T t) {}\n" +
" X() {}\n" +
" @SafeVarargs\n" +
" X(String abc, String abc2, T... t) {}\n" +
" void foo(T a) {\n" +
" System.out.println(a);\n" +
" }\n" +
" X<Integer> x1 = new X<>(1,1);\n" +
" X<Integer> x2 = new X<>(1);\n" +
" X<Integer> x3 = new X<>();\n" +
" X<Integer> x4 = new X<>(\"\",\"\");\n" +
" X<Integer> x5 = new X<>(\"\",\"\",\"\");\n" +
" X<Integer> x6 = new X<>(\"\",\"\",1);\n" +
"}\n"
},
"----------\n" +
"1. ERROR in X.java (at line 9)\n" +
" X<Integer> x1 = new X<>(1,1);\n" +
" ^^^^^^^^^^^^\n" +
"Cannot infer type arguments for X<>\n" +
"----------\n" +
"2. ERROR in X.java (at line 13)\n" +
" X<Integer> x5 = new X<>(\"\",\"\",\"\");\n" +
" ^^^^^^^^^^^^^^^^^\n" +
(this.complianceLevel < ClassFileConstants.JDK1_8 ?
"Type mismatch: cannot convert from X<String> to X<Integer>\n"
:
"Cannot infer type arguments for X<>\n"
) +
"----------\n");
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=345559
public void test0037() {
this.runNegativeTest(
new String[] {
"X.java",
"public class X<T> {\n" +
" X(T t) {}\n" +
" X() {}\n" +
" @SafeVarargs\n" +
" X(String abc, String abc2, T... t) {}\n" +
" void foo(T a) {\n" +
" System.out.println(a);\n" +
" }\n" +
" class Y<K>{\n" +
" @SafeVarargs\n" +
" Y(T t,String abc, K... k) {}\n" +
" }\n" +
" public static void main(String[] args) {\n" +
" X<Integer>.Y<String> y1 = new X<>().new Y<>(1);\n" +
" X<Integer>.Y<String> y2 = new X<>(1).new Y<>(1);\n" +
" X<Integer>.Y<String> y3 = new X<>(\"\",\"\",1).new Y<>(1);\n" +
" X<Integer>.Y<String> y4 = new X<>(1,\"\").new Y<>(1,\"\");\n" +
" }\n" +
"}\n"
},
"----------\n" +
"1. ERROR in X.java (at line 14)\n" +
" X<Integer>.Y<String> y1 = new X<>().new Y<>(1);\n" +
" ^^^^^^^^^^^^^^^^^^^^\n" +
"Cannot infer type arguments for Y<>\n" +
"----------\n" +
"2. ERROR in X.java (at line 15)\n" +
" X<Integer>.Y<String> y2 = new X<>(1).new Y<>(1);\n" +
" ^^^^^^^^^^^^^^^^^^^^^\n" +
"Cannot infer type arguments for Y<>\n" +
"----------\n" +
"3. ERROR in X.java (at line 16)\n" +
" X<Integer>.Y<String> y3 = new X<>(\"\",\"\",1).new Y<>(1);\n" +
" ^^^^^^^^^^^^^^^^^^^^^^^^^^^\n" +
"Cannot infer type arguments for Y<>\n" +
"----------\n" +
"4. ERROR in X.java (at line 17)\n" +
" X<Integer>.Y<String> y4 = new X<>(1,\"\").new Y<>(1,\"\");\n" +
" ^^^^^^^^^^^^^\n" +
"Cannot infer type arguments for X<>\n" +
"----------\n");
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=341795
public void test0038() {
this.runConformTest(
new String[] {
"X.java",
"interface A {\n" +
" <T extends B & C> T getaMethod();\n" +
" <T extends B & C> void setaMethod(T param);\n" +
"}\n" +
"class B {\n" +
"}\n" +
"interface C {\n" +
"}\n" +
"public class X {\n" +
" public void someMethod(A aInstance) {\n" +
" aInstance.getaMethod();\n" +
" }\n" +
"}\n"
},
"");
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=319436
public void test0039() {
this.runConformTest(
new String[] {
"X.java",
"import java.io.Serializable;\n" +
"public class X {\n" +
" public static void main(String[] args) {\n" +
" createObject();\n" +
" }\n" +
" private static <T extends Comparable<?> & Serializable> T createObject() {\n" +
" return null;\n" +
" }\n" +
"}\n"
},
"");
}
public void test0042() {
this.runNegativeTest(
new String[] {
"X.java",
"interface I<T> {}\n" +
"public class X {\n" +
" <T extends I<T>> void m() { }\n" +
" { m(); } \n" +
"}\n"
},
"");
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=345968
public void test0043() {
this.runConformTest(
new String[] {
"X.java",
"public class X<T> {\n" +
" class Y<Z> {\n" +
" Y(T a, Z b) {\n" +
" }\n" +
" }\n" +
" public static void main(String[] args) {\n" +
" X<String>.Y<String> x1 = new X<String>().new Y<String>(\"\",\"\");\n" +
" X<String>.Y<String> x2 = new X<String>().new Y<>(\"\",\"\");\n" +
" System.out.println(\"SUCCESS\");\n" +
" }\n" +
"}\n"
},
"SUCCESS");
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=345968
public void test0044() {
this.runNegativeTest(
new String[] {
"X.java",
"public class X<T> {\n" +
" class Y<Z> {\n" +
" Y(T a, Z b) {\n" +
" }\n" +
" }\n" +
" public static void main(String[] args) {\n" +
" X<String>.Y<String> x = new X<>().new Y<>(\"\",\"\");\n" +
" }\n" +
"}\n"
},
"----------\n" +
"1. ERROR in X.java (at line 7)\n" +
" X<String>.Y<String> x = new X<>().new Y<>(\"\",\"\");\n" +
" ^^^^^^^^^^^^^^^^^^^^^^^^\n" +
(this.complianceLevel < ClassFileConstants.JDK1_8 ?
"Type mismatch: cannot convert from X<Object>.Y<String> to X<String>.Y<String>\n"
:
"Cannot infer type arguments for Y<>\n"
) +
"----------\n");
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=345968
public void test0045() {
this.runConformTest(
new String[] {
"X.java",
"public class X {\n" +
" class Y<T, Z> {\n" +
" Y(T a, Z b) {\n" +
" }\n" +
" }\n" +
" public static void main(String[] args) {\n" +
" X.Y<String, String> x = new X().new Y<>(\"\",\"\");\n" +
" System.out.println(\"SUCCESS\");\n" +
" }\n" +
"}\n"
},
"SUCCESS");
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=345968
public void test0046() {
this.runConformTest(
new String[] {
"X.java",
"public class X<T> {\n" +
" class Y<Z> {\n" +
" Y(T a, Z b) { \n" +
" }\n" +
" }\n" +
" public static void main(String[] args) {\n" +
" X<String>.Y<String> x = new X<String>().new Y<>(\"\",\"\");\n" +
" System.out.println(\"SUCCESS\");\n" +
" }\n" +
"}\n"
},
"SUCCESS");
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=345968
public void test0047() {
this.runConformTest(
new String[] {
"X.java",
"public class X<T> {\n" +
" class Y<Z> {\n" +
" Y(T a, Z b) {\n" +
" }\n" +
" }\n" +
" public static void main(String[] args) {\n" +
" X<String>.Y<String> x1 = new X<String>().new Y<String>(\"\",\"\"); \n" +
" X<String>.Y<String> x2 = new X<String>().new Y<>(\"\",\"\"); // javac wrong error \n" +
" System.out.println(\"SUCCESS\");\n" +
" }\n" +
"}\n"
},
"SUCCESS");
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=345968
public void test0048() {
this.runNegativeTest(
new String[] {
"X.java",
"public class X<T> {\n" +
" <T> X(T t) {\n" +
" }\n" +
" X<String> x = new X<>(\"\"); \n" +
" Zork z;\n" +
"}\n"
},
"----------\n" +
"1. WARNING in X.java (at line 2)\n" +
" <T> X(T t) {\n" +
" ^\n" +
"The type parameter T is hiding the type T\n" +
"----------\n" +
"2. ERROR in X.java (at line 5)\n" +
" Zork z;\n" +
" ^^^^\n" +
"Zork cannot be resolved to a type\n" +
"----------\n");
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=345968
public void test0049() {
this.runConformTest(
new String[] {
"X.java",
"public class X<T> {\n" +
" class Y<Z> {\n" +
" Y(T a, Z b) {\n" +
" }\n" +
" }\n" +
" public static void main(String[] args) {\n" +
" X<Object>.Y<String> x1 = new X<Object>().new Y<String>(new Object(),\"\");\n" +
" X<Object>.Y<String> x2 = new X<>().new Y<String>(new Object(),\"\");\n" +
" X<Object>.Y<String> x3 = new X<Object>().new Y<>(new Object(),\"\");\n" +
" X<Object>.Y<String> x4 = new X<>().new Y<>(new Object(),\"\");\n" +
" }\n" +
"}\n"
},
"");
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=345968
public void test0050() {
this.runConformTest(
new String[] {
"X.java",
"public class X<T extends Comparable<T>> {\n" +
" class Y<Z> {\n" +
" Y(T a, Z b) {\n" +
" }\n" +
" }\n" +
" public static void main(String[] args) {\n" +
" X<String>.Y<String> x1 = new X<String>().new Y<>(\"\",\"\");\n" +
" }\n" +
"}\n"
},
"");
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=345968
public void test0051() {
this.runConformTest(
new String[] {
"X.java",
"public class X<T extends Comparable<T>> {\n" +
" class Y<Z> {\n" +
" Y(Integer a, Z b) {\n" +
" }\n" +
" Y(T a, Z b) {\n" +
" }\n" +
" }\n" +
" public static void main(String[] args) {\n" +
" X<String>.Y<String> x1 = new X<String>().new Y<>(\"\",\"\");\n" +
" }\n" +
"}\n"
},
"");
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=340747
public void test0052() {
Map customOptions = getCompilerOptions();
customOptions.put(CompilerOptions.OPTION_ReportRedundantSpecificationOfTypeArguments, CompilerOptions.ERROR);
customOptions.put(CompilerOptions.OPTION_ReportRawTypeReference, CompilerOptions.IGNORE);
this.runNegativeTest(
new String[] {
"X.java",
"public class X<E> {\n" +
" X(E e) {}\n" +
" X() {}\n" +
" public static void main(String[] args) {\n" +
" X<Number> x = new X<Number>(1);\n" +
" X<String> x2 = new X<String>(\"SUCCESS\");\n" +
" X<Integer> x3 = new X<Integer>(1);\n" +
" X<AX> x4 = new X<AX>(new AX());\n" +
" X<? extends AX> x5 = new X<AX<String>>(new AX<String>());\n" +
" X<?> x6 = new X<AX<String>>(new AX<String>());\n" +
" X<Class<? extends Object>> x7 = new X<Class<? extends Object>>();\n" +
" }\n" +
"}\n" +
"class AX<T>{}\n"
},
(this.complianceLevel < ClassFileConstants.JDK1_8 ?
"----------\n" +
"1. ERROR in X.java (at line 6)\n" +
" X<String> x2 = new X<String>(\"SUCCESS\");\n" +
" ^\n" +
"Redundant specification of type arguments <String>\n" +
"----------\n" +
"2. ERROR in X.java (at line 7)\n" +
" X<Integer> x3 = new X<Integer>(1);\n" +
" ^\n" +
"Redundant specification of type arguments <Integer>\n" +
"----------\n" +
"3. ERROR in X.java (at line 8)\n" +
" X<AX> x4 = new X<AX>(new AX());\n" +
" ^\n" +
"Redundant specification of type arguments <AX>\n" +
"----------\n" +
"4. ERROR in X.java (at line 9)\n" +
" X<? extends AX> x5 = new X<AX<String>>(new AX<String>());\n" +
" ^\n" +
"Redundant specification of type arguments <AX<String>>\n" +
"----------\n" +
"5. ERROR in X.java (at line 10)\n" +
" X<?> x6 = new X<AX<String>>(new AX<String>());\n" +
" ^\n" +
"Redundant specification of type arguments <AX<String>>\n" +
"----------\n" +
"6. ERROR in X.java (at line 11)\n" +
" X<Class<? extends Object>> x7 = new X<Class<? extends Object>>();\n" +
" ^\n" +
"Redundant specification of type arguments <Class<? extends Object>>\n" +
"----------\n"
: // additional error at line 5 due to better inference:
"----------\n" +
"1. ERROR in X.java (at line 5)\n" +
" X<Number> x = new X<Number>(1);\n" +
" ^\n" +
"Redundant specification of type arguments <Number>\n" +
"----------\n" +
"2. ERROR in X.java (at line 6)\n" +
" X<String> x2 = new X<String>(\"SUCCESS\");\n" +
" ^\n" +
"Redundant specification of type arguments <String>\n" +
"----------\n" +
"3. ERROR in X.java (at line 7)\n" +
" X<Integer> x3 = new X<Integer>(1);\n" +
" ^\n" +
"Redundant specification of type arguments <Integer>\n" +
"----------\n" +
"4. ERROR in X.java (at line 8)\n" +
" X<AX> x4 = new X<AX>(new AX());\n" +
" ^\n" +
"Redundant specification of type arguments <AX>\n" +
"----------\n" +
"5. ERROR in X.java (at line 9)\n" +
" X<? extends AX> x5 = new X<AX<String>>(new AX<String>());\n" +
" ^\n" +
"Redundant specification of type arguments <AX<String>>\n" +
"----------\n" +
"6. ERROR in X.java (at line 10)\n" +
" X<?> x6 = new X<AX<String>>(new AX<String>());\n" +
" ^\n" +
"Redundant specification of type arguments <AX<String>>\n" +
"----------\n" +
"7. ERROR in X.java (at line 11)\n" +
" X<Class<? extends Object>> x7 = new X<Class<? extends Object>>();\n" +
" ^\n" +
"Redundant specification of type arguments <Class<? extends Object>>\n" +
"----------\n"
),
null,
false,
customOptions);
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=340747
public void test0052b() {
Map customOptions = getCompilerOptions();
customOptions.put(CompilerOptions.OPTION_ReportRedundantSpecificationOfTypeArguments, CompilerOptions.ERROR);
customOptions.put(CompilerOptions.OPTION_ReportRawTypeReference, CompilerOptions.IGNORE);
this.runNegativeTest(
new String[] {
"X.java",
"public class X<E> {\n" +
" E eField;\n" +
" E get() { return this.eField; }\n" +
" X(E e) {}\n" +
" X(int e, String e2) {}\n" +
" public static void main(String[] args) {\n" +
" X<Number> x = new X<Number>(1);\n" +
" X<String> x2 = new X<String>(\"SUCCESS\");\n" +
" X<String> x22 = new X<String>(1,\"SUCCESS\");\n" +
" X<Integer> x3 = new X<Integer>(1);\n" +
" String s = foo(new X<String>(\"aaa\"));\n" +
" String s2 = foo(new X<String>(1,\"aaa\"));\n" +
" }\n" +
" static String foo(X<String> x) {\n" +
" return x.get();\n" +
" }\n" +
"}\n"
},
(this.complianceLevel < ClassFileConstants.JDK1_8 ?
"----------\n" +
"1. ERROR in X.java (at line 8)\n" +
" X<String> x2 = new X<String>(\"SUCCESS\");\n" +
" ^\n" +
"Redundant specification of type arguments <String>\n" +
"----------\n" +
"2. ERROR in X.java (at line 9)\n" +
" X<String> x22 = new X<String>(1,\"SUCCESS\");\n" +
" ^\n" +
"Redundant specification of type arguments <String>\n" +
"----------\n" +
"3. ERROR in X.java (at line 10)\n" +
" X<Integer> x3 = new X<Integer>(1);\n" +
" ^\n" +
"Redundant specification of type arguments <Integer>\n" +
"----------\n" +
"4. ERROR in X.java (at line 11)\n" +
" String s = foo(new X<String>(\"aaa\"));\n" +
" ^\n" +
"Redundant specification of type arguments <String>\n" +
"----------\n"
: // additional error at line 7 due to better inference
"----------\n" +
"1. ERROR in X.java (at line 7)\n" +
" X<Number> x = new X<Number>(1);\n" +
" ^\n" +
"Redundant specification of type arguments <Number>\n" +
"----------\n" +
"2. ERROR in X.java (at line 8)\n" +
" X<String> x2 = new X<String>(\"SUCCESS\");\n" +
" ^\n" +
"Redundant specification of type arguments <String>\n" +
"----------\n" +
"3. ERROR in X.java (at line 9)\n" +
" X<String> x22 = new X<String>(1,\"SUCCESS\");\n" +
" ^\n" +
"Redundant specification of type arguments <String>\n" +
"----------\n" +
"4. ERROR in X.java (at line 10)\n" +
" X<Integer> x3 = new X<Integer>(1);\n" +
" ^\n" +
"Redundant specification of type arguments <Integer>\n" +
"----------\n" +
"5. ERROR in X.java (at line 11)\n" +
" String s = foo(new X<String>(\"aaa\"));\n" +
" ^\n" +
"Redundant specification of type arguments <String>\n" +
"----------\n"
),
null,
false,
customOptions);
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=340747
public void test0052c() {
Map customOptions = getCompilerOptions();
customOptions.put(CompilerOptions.OPTION_ReportRedundantSpecificationOfTypeArguments, CompilerOptions.ERROR);
customOptions.put(CompilerOptions.OPTION_ReportRawTypeReference, CompilerOptions.IGNORE);
this.runNegativeTest(
new String[] {
"X.java",
"public class X<E> {\n" +
" X(String abc, String def) {}\n" +
" void foo() {\n" +
" X<Integer> x = new X<Integer>(\"\",\"\");\n" +
" foo3(new X<Integer>(\"\",\"\"));\n" +
" }\n" +
" X<Integer> foo2() {\n" +
" return new X<Integer>(\"\",\"\");\n" +
" }\n" +
" void foo3(X<Integer> x) {}\n" +
"}"
},
"----------\n" +
"1. ERROR in X.java (at line 4)\n" +
" X<Integer> x = new X<Integer>(\"\",\"\");\n" +
" ^\n" +
"Redundant specification of type arguments <Integer>\n" +
"----------\n" +
"2. ERROR in X.java (at line 8)\n" +
" return new X<Integer>(\"\",\"\");\n" +
" ^\n" +
"Redundant specification of type arguments <Integer>\n" +
"----------\n",
null,
false,
customOptions);
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=340747
public void test0052d() {
Map customOptions = getCompilerOptions();
customOptions.put(CompilerOptions.OPTION_ReportRedundantSpecificationOfTypeArguments, CompilerOptions.ERROR);
customOptions.put(CompilerOptions.OPTION_ReportRawTypeReference, CompilerOptions.IGNORE);
this.runNegativeTest(
new String[] {
"X.java",
"public class X<E> {\n" +
" X(E e) {}\n" +
" X() {}\n" +
" public static void main(String[] args) {\n" +
" X<Number> x = new X<Number>(1);\n" +
" }\n" +
"}\n" +
"class AX<T>{}\n"
},
this.complianceLevel < ClassFileConstants.JDK1_8 ?
"" :
"----------\n" +
"1. ERROR in X.java (at line 5)\n" +
" X<Number> x = new X<Number>(1);\n" +
" ^\n" +
"Redundant specification of type arguments <Number>\n" +
"----------\n",
null,
false,
customOptions);
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=340747
public void test0053() {
Map customOptions = getCompilerOptions();
customOptions.put(CompilerOptions.OPTION_ReportRedundantSpecificationOfTypeArguments, CompilerOptions.ERROR);
customOptions.put(CompilerOptions.OPTION_ReportRawTypeReference, CompilerOptions.IGNORE);
this.runNegativeTest(
new String[] {
"Z.java",
"public class Z <T extends ZB> { \n" +
" public static void main(String[] args) {\n" +
" foo(new Z<ZB>());\n" +
" }\n" +
" static void foo(Z<ZB> z) {\n" +
" }\n" +
"}\n" +
"class ZB {\n" +
"}"
},
"----------\n" +
"1. ERROR in Z.java (at line 3)\n" +
" foo(new Z<ZB>());\n" +
" ^\n" +
"Redundant specification of type arguments <ZB>\n" +
"----------\n",
null,
false,
customOptions);
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=340747
public void test0054() {
Map customOptions = getCompilerOptions();
customOptions.put(CompilerOptions.OPTION_ReportRedundantSpecificationOfTypeArguments, CompilerOptions.ERROR);
customOptions.put(CompilerOptions.OPTION_ReportRawTypeReference, CompilerOptions.IGNORE);
this.runNegativeTest(
new String[] {
"Y.java",
"public class Y<V> {\n" +
" public static <W extends ABC> Y<W> make(Class<W> clazz) {\n" +
" return new Y<W>();\n" +
" }\n" +
"}\n" +
"class ABC{}\n"
},
"----------\n" +
"1. ERROR in Y.java (at line 3)\n" +
" return new Y<W>();\n" +
" ^\n" +
"Redundant specification of type arguments <W>\n" +
"----------\n",
null,
false,
customOptions);
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=340747
public void test0055() {
Map customOptions = getCompilerOptions();
customOptions.put(CompilerOptions.OPTION_ReportRedundantSpecificationOfTypeArguments, CompilerOptions.ERROR);
customOptions.put(CompilerOptions.OPTION_ReportRawTypeReference, CompilerOptions.IGNORE);
this.runNegativeTest(
new String[] {
"X.java",
"public class X<A> {\n" +
" class Inner<B> { }\n" +
" static class Inner2<C> { }\n" +
"\n" +
" void method() {\n" +
" X<String>.Inner<Integer> a= new X<String>().new Inner<Integer>();\n" +
" X<String>.Inner<Integer> a1= new X<String>().new Inner<>();\n" + // do not warn. Removing String from X<String> not possible
" Inner<Integer> b= new X<A>().new Inner<Integer>();\n" +
" Inner<Integer> c= new Inner<Integer>();\n" +
" X<A>.Inner<Integer> e= new X<A>().new Inner<Integer>();\n" +
" X<A>.Inner<Integer> f= new Inner<Integer>();\n" +
" X.Inner2<Integer> d3 = new X.Inner2<Integer>();\n" +
" }\n" +
"}\n",
},
"----------\n" +
"1. ERROR in X.java (at line 6)\n" +
" X<String>.Inner<Integer> a= new X<String>().new Inner<Integer>();\n" +
" ^^^^^\n" +
"Redundant specification of type arguments <Integer>\n" +
"----------\n" +
"2. ERROR in X.java (at line 8)\n" +
" Inner<Integer> b= new X<A>().new Inner<Integer>();\n" +
" ^^^^^\n" +
"Redundant specification of type arguments <Integer>\n" +
"----------\n" +
"3. ERROR in X.java (at line 9)\n" +
" Inner<Integer> c= new Inner<Integer>();\n" +
" ^^^^^\n" +
"Redundant specification of type arguments <Integer>\n" +
"----------\n" +
"4. ERROR in X.java (at line 10)\n" +
" X<A>.Inner<Integer> e= new X<A>().new Inner<Integer>();\n" +
" ^^^^^\n" +
"Redundant specification of type arguments <Integer>\n" +
"----------\n" +
"5. ERROR in X.java (at line 11)\n" +
" X<A>.Inner<Integer> f= new Inner<Integer>();\n" +
" ^^^^^\n" +
"Redundant specification of type arguments <Integer>\n" +
"----------\n" +
"6. ERROR in X.java (at line 12)\n" +
" X.Inner2<Integer> d3 = new X.Inner2<Integer>();\n" +
" ^^^^^^\n" +
"Redundant specification of type arguments <Integer>\n" +
"----------\n",
null,
false,
customOptions);
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=340747
// qualified allocation
public void test0056() {
Map customOptions = getCompilerOptions();
customOptions.put(CompilerOptions.OPTION_ReportRedundantSpecificationOfTypeArguments, CompilerOptions.ERROR);
customOptions.put(CompilerOptions.OPTION_ReportRawTypeReference, CompilerOptions.IGNORE);
this.runNegativeTest(
new String[] {
"X.java",
"public class X <T> {\n" +
" void foo1() {\n" +
" X<String>.Item<Thread> i = new X<Exception>().new Item<Thread>();\n" +
" }\n" +
" void foo2() {\n" +
" X<Exception>.Item<Thread> j = new X<Exception>.Item<Thread>();\n" +
" }\n" +
" class Item <E> {}\n" +
"}\n"
},
"----------\n" +
"1. ERROR in X.java (at line 3)\n" +
" X<String>.Item<Thread> i = new X<Exception>().new Item<Thread>();\n" +
" ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^\n" +
"Type mismatch: cannot convert from X<Exception>.Item<Thread> to X<String>.Item<Thread>\n" +
"----------\n" +
"2. ERROR in X.java (at line 3)\n" +
" X<String>.Item<Thread> i = new X<Exception>().new Item<Thread>();\n" +
" ^^^^\n" +
"Redundant specification of type arguments <Thread>\n" +
"----------\n" +
"3. ERROR in X.java (at line 6)\n" +
" X<Exception>.Item<Thread> j = new X<Exception>.Item<Thread>();\n" +
" ^^^^^^^^^^^^^^^^^\n" +
"Cannot allocate the member type X<Exception>.Item<Thread> using a parameterized compound name; use its simple name and an enclosing instance of type X<Exception>\n" +
"----------\n" +
"4. ERROR in X.java (at line 6)\n" +
" X<Exception>.Item<Thread> j = new X<Exception>.Item<Thread>();\n" +
" ^^^^\n" +
"Redundant specification of type arguments <Thread>\n" +
"----------\n",
null,
false,
customOptions);
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=340747
// qualified allocation
public void test0056b() {
Map customOptions = getCompilerOptions();
customOptions.put(CompilerOptions.OPTION_ReportRedundantSpecificationOfTypeArguments, CompilerOptions.ERROR);
customOptions.put(CompilerOptions.OPTION_ReportRawTypeReference, CompilerOptions.IGNORE);
this.runNegativeTest(
new String[] {
"X.java",
"public class X <T> {\n" +
" static class X1<Z> {\n" +
" X1(Z z){}\n" +
" }\n" +
" X1<Integer> x1 = new X.X1<Integer>(1);\n" +
" X1<Number> x2 = new X.X1<Number>(1);\n" +
"}\n"
},
(this.complianceLevel < ClassFileConstants.JDK1_8 ?
"----------\n" +
"1. ERROR in X.java (at line 5)\n" +
" X1<Integer> x1 = new X.X1<Integer>(1);\n" +
" ^^\n" +
"Redundant specification of type arguments <Integer>\n" +
"----------\n"
: // additional error at line 6 due to better inference:
"----------\n" +
"1. ERROR in X.java (at line 5)\n" +
" X1<Integer> x1 = new X.X1<Integer>(1);\n" +
" ^^\n" +
"Redundant specification of type arguments <Integer>\n" +
"----------\n" +
"2. ERROR in X.java (at line 6)\n" +
" X1<Number> x2 = new X.X1<Number>(1);\n" +
" ^^\n" +
"Redundant specification of type arguments <Number>\n" +
"----------\n"
),
null,
false,
customOptions);
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=340747
// qualified allocation
public void test0056c() {
Map customOptions = getCompilerOptions();
customOptions.put(CompilerOptions.OPTION_ReportRedundantSpecificationOfTypeArguments, CompilerOptions.ERROR);
customOptions.put(CompilerOptions.OPTION_ReportRawTypeReference, CompilerOptions.IGNORE);
this.runNegativeTest(
new String[] {
"X.java",
"public class X <T> {\n" +
" X(T t){}\n" +
" class X1<Z> {\n" +
" X1(Z z){}\n" +
" }\n" +
" X<Integer>.X1<Number> x1 = new X<Integer>(1).new X1<Number>(1);\n" +
"}\n"
},
(this.complianceLevel < ClassFileConstants.JDK1_8 ?
"----------\n" +
"1. ERROR in X.java (at line 6)\n" +
" X<Integer>.X1<Number> x1 = new X<Integer>(1).new X1<Number>(1);\n" +
" ^\n" +
"Redundant specification of type arguments <Integer>\n" +
"----------\n"
: // additional error (2.) at inner allocation due to better inference:
"----------\n" +
"1. ERROR in X.java (at line 6)\n" +
" X<Integer>.X1<Number> x1 = new X<Integer>(1).new X1<Number>(1);\n" +
" ^\n" +
"Redundant specification of type arguments <Integer>\n" +
"----------\n" +
"2. ERROR in X.java (at line 6)\n" +
" X<Integer>.X1<Number> x1 = new X<Integer>(1).new X1<Number>(1);\n" +
" ^^\n" +
"Redundant specification of type arguments <Number>\n" +
"----------\n"
),
null,
false,
customOptions);
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=340747
public void test0057() {
Map customOptions = getCompilerOptions();
customOptions.put(CompilerOptions.OPTION_ReportRedundantSpecificationOfTypeArguments, CompilerOptions.ERROR);
customOptions.put(CompilerOptions.OPTION_ReportRawTypeReference, CompilerOptions.IGNORE);
this.runNegativeTest(
new String[] {
"X.java",
"public class X {\n" +
" void test() {\n" +
" Pair<Double, Integer> p = new InvertedPair<Integer, Double>();\n" +
" }\n" +
"}\n" +
"class Pair<A, B> {\n" +
"}\n" +
"class InvertedPair<A, B> extends Pair<B, A> {\n" +
"}\n"
},
"----------\n" +
"1. ERROR in X.java (at line 3)\n" +
" Pair<Double, Integer> p = new InvertedPair<Integer, Double>();\n" +
" ^^^^^^^^^^^^\n" +
"Redundant specification of type arguments <Integer, Double>\n" +
"----------\n",
null,
false,
customOptions);
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=340747
public void test0058() {
Map customOptions = getCompilerOptions();
customOptions.put(CompilerOptions.OPTION_ReportRedundantSpecificationOfTypeArguments, CompilerOptions.ERROR);
customOptions.put(CompilerOptions.OPTION_ReportRawTypeReference, CompilerOptions.IGNORE);
this.runNegativeTest(
new String[] {
"X.java",
"import java.util.ArrayList;\n" +
"\n" +
"public class X {\n" +
" public void test(boolean param) {\n" +
" ArrayList<?> ls = (param) \n" +
" ? new ArrayList<String>()\n" +
" : new ArrayList<Object>();\n" +
" \n" +
" }\n" +
"}\n"
},
"----------\n" +
"1. ERROR in X.java (at line 7)\n" +
" : new ArrayList<Object>();\n" +
" ^^^^^^^^^\n" +
"Redundant specification of type arguments <Object>\n" +
"----------\n",
null,
false,
customOptions);
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=340747
public void test0059() {
Map customOptions = getCompilerOptions();
customOptions.put(CompilerOptions.OPTION_ReportRedundantSpecificationOfTypeArguments, CompilerOptions.ERROR);
customOptions.put(CompilerOptions.OPTION_ReportRawTypeReference, CompilerOptions.IGNORE);
this.runNegativeTest(
new String[] {
"X.java",
"import java.util.ArrayList;\n" +
"import java.util.List;\n" +
"\n" +
"public class X<T> {\n" +
" X(List<? extends T> p) {}\n" +
" Object x = new X<CharSequence>((ArrayList<String>) null);\n" +
"}\n"
},
"",
null,
false,
customOptions);
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=351965
public void test0060() {
Map customOptions = getCompilerOptions();
customOptions.put(CompilerOptions.OPTION_Source, CompilerOptions.VERSION_1_4);
this.runNegativeTest(
new String[] {
"X.java",
"import java.util.ArrayList;\n" +
"import java.util.List;\n" +
"\n" +
"public class X {\n" +
" public void foo() {\n" +
" new ArrayList<>();\n" +
" }\n" +
"}\n"
},
"----------\n" +
"1. ERROR in X.java (at line 6)\n" +
" new ArrayList<>();\n" +
" ^^^^^^^^^\n" +
"\'<>\' operator is not allowed for source level below 1.7\n" +
"----------\n" +
"2. ERROR in X.java (at line 6)\n" +
" new ArrayList<>();\n" +
" ^^^^^^^^^\n" +
"Incorrect number of arguments for type ArrayList<E>; it cannot be parameterized with arguments <>\n" +
"----------\n",
null,
false,
customOptions);
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=351965
public void test0060a() {
Map customOptions = getCompilerOptions();
customOptions.put(CompilerOptions.OPTION_Source, CompilerOptions.VERSION_1_4);
this.runNegativeTest(
new String[] {
"X.java",
"\n" +
"public class X {\n" +
" public void foo() {\n" +
" new java.util.ArrayList<>();\n" +
" }\n" +
"}\n"
},
"----------\n" +
"1. ERROR in X.java (at line 4)\n" +
" new java.util.ArrayList<>();\n" +
" ^^^^^^^^^^^^^^^^^^^\n" +
"\'<>\' operator is not allowed for source level below 1.7\n" +
"----------\n" +
"2. ERROR in X.java (at line 4)\n" +
" new java.util.ArrayList<>();\n" +
" ^^^^^^^^^^^^^^^^^^^\n" +
"Incorrect number of arguments for type ArrayList<E>; it cannot be parameterized with arguments <>\n" +
"----------\n",
null,
false,
customOptions);
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=361441
public void test0061() {
this.runNegativeTest(
new String[] {
"X.java",
"import java.net.URI;" +
"import java.nio.file.FileSystems;" +
"import java.util.Collections;\n" +
"public class X {\n" +
" public static void foo() {\n" +
" URI uri = URI.create(\"http://www.eclipse.org\");\n" +
" FileSystems.<String, Object>newFileSystem(uri, Collections.emptyMap());\n" +
" }\n" +
"}\n"
},
(this.complianceLevel < ClassFileConstants.JDK1_8 ?
"----------\n" +
"1. ERROR in X.java (at line 5)\n" +
" FileSystems.<String, Object>newFileSystem(uri, Collections.emptyMap());\n" +
" ^^^^^^^^^^^^^\n" +
"The method newFileSystem(URI, Map<String,?>) in the type FileSystems is not applicable for the arguments (URI, Map<Object,Object>)\n" +
"----------\n"
: // with better inference, method is applicable, but then we have another problem:
"----------\n" +
"1. ERROR in X.java (at line 5)\n" +
" FileSystems.<String, Object>newFileSystem(uri, Collections.emptyMap());\n" +
" ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^\n" +
"Unhandled exception type IOException\n" +
"----------\n" +
"2. WARNING in X.java (at line 5)\n" +
" FileSystems.<String, Object>newFileSystem(uri, Collections.emptyMap());\n" +
" ^^^^^^^^^^^^^^\n" +
"Unused type arguments for the non generic method newFileSystem(URI, Map<String,?>) of type FileSystems; it should not be parameterized with arguments <String, Object>\n" +
"----------\n"
));
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=428220, [1.8][compiler] Javadoc processing interferes with type inference.
public void test428220() {
Map customOptions = getCompilerOptions();
customOptions.put(CompilerOptions.OPTION_DocCommentSupport, CompilerOptions.ENABLED);
runNegativeTest(
new String[] {
"X.java",
"public class HashMap<K, V> {\n" +
" static class Node<K, V> {\n" +
" Node(int hash, K key, V value, Node<K, V> next) {}\n" +
" }\n" +
" /** @see #put(Object, Object) */\n" +
" public V put(K key, V value) { return null; }\n" +
"\n" +
" Node<K, V> newNode(int hash, K key, V value, Node<K, V> next) {\n" +
" return new Node<>(hash, key, value, next); // Error\n" +
" }\n" +
"}\n"
},
"----------\n" +
"1. ERROR in X.java (at line 1)\n" +
" public class HashMap<K, V> {\n" +
" ^^^^^^^\n" +
"The public type HashMap must be defined in its own file\n" +
"----------\n", null, true, customOptions);
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=428220, [1.8][compiler] Javadoc processing interferes with type inference.
public void test428220a() {
Map customOptions = getCompilerOptions();
customOptions.put(CompilerOptions.OPTION_Store_Annotations, CompilerOptions.ENABLED);
runNegativeTest(
new String[] {
"X.java",
"public class HashMap<K, V> {\n" +
" static class Node<K, V> {\n" +
" Node(int hash, K key, V value, Node<K, V> next) {}\n" +
" }\n" +
" /** @see #put(Object, Object) */\n" +
" public V put(K key, V value) { return null; }\n" +
"\n" +
" Node<K, V> newNode(int hash, K key, V value, Node<K, V> next) {\n" +
" return new Node<>(hash, key, value, next); // Error\n" +
" }\n" +
"}\n"
},
"----------\n" +
"1. ERROR in X.java (at line 1)\n" +
" public class HashMap<K, V> {\n" +
" ^^^^^^^\n" +
"The public type HashMap must be defined in its own file\n" +
"----------\n", null, true, customOptions);
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=442929, [1.8][compiler] ClassCastException during runtime where is no cast
public void test442929() {
this.runConformTest(
new String[] {
"X.java",
"public class X {\n" +
" public static void main(String[] args) {\n" +
" shouldNotThrow();\n" +
" }\n" +
" static void shouldNotThrow() {\n" +
" final String[] array = { \"\" };\n" +
" final String[] expected = { \"\" };\n" +
" // throws\n" +
" try {\n" +
" assertThat(op(array, \"\")).isEqualTo(expected);\n" +
" } catch (ClassCastException c) {\n" +
" System.out.println(\"Expected CCE\");\n" +
" }\n" +
" }\n" +
" static <T> T[] op(T[] array, T element) {\n" +
" return asArray(element);\n" +
" }\n" +
" @SafeVarargs\n" +
" static <T> T[] asArray(T... elements) {\n" +
" return elements;\n" +
" }\n" +
" static <T> ObjectArrayAssert<T> assertThat(T actual) {\n" +
" return new ObjectArrayAssert<>(actual);\n" +
" }\n" +
" static class ObjectArrayAssert<T> {\n" +
" ObjectArrayAssert(T actual) {\n" +
" }\n" +
" void isEqualTo(T expected) {\n" +
" }\n" +
" }\n" +
"}\n",
},
"Expected CCE");
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=448028, [1.8] 1.8 cannot infer type arguments where 1.7 does
public void test448028() {
Map customOptions = getCompilerOptions();
customOptions.put(CompilerOptions.OPTION_ReportRedundantSpecificationOfTypeArguments, CompilerOptions.ERROR);
this.runNegativeTest(
new String[] {
"X.java",
"public class X {\n" +
"\n" +
" public static interface I {/*empty*/}\n" +
"\n" +
" public static class C\n" +
" implements I {/*empty*/}\n" +
"\n" +
" public static class W<T extends I>\n" +
" implements I {\n" +
"\n" +
" // --- problem is triggered only, when there is a vararg-parameter\n" +
" public W(final T t, final Object... o) {\n" +
" super();\n" +
" }\n" +
" }\n" +
"\n" +
" // --- needed to trigger problem\n" +
" public static final <T> T inspect(final T t) {\n" +
" return t;\n" +
" }\n" +
"\n" +
" // --- this compiles ok when having JDK Compilance set to 1.7 !\n" +
" public static final W<C> err1() {\n" +
" final C c = new C();\n" +
" final Object o = new Object();\n" +
" return inspect(new W<>(c, o)); // - ERROR: Cannot infer type arguments for W<> F.java\n" +
" }\n" +
"\n" +
" public static final W<C> wrn1() {\n" +
" final C c = new C();\n" +
" final Object o = new Object();\n" +
" // --- giving the type-parameter yields a warning\n" +
" // --- comparing that to the error of method err1() it does not make much sense\n" +
" return inspect(new W<C>(c, o)); // - WARNING: Redundant specification of type arguments <F.C> F.java\n" +
" }\n" +
"\n" +
" public static final W<C> ok1() {\n" +
" final C c = new C();\n" +
" // --- no extra vararg-paramaeter\n" +
" return inspect(new W<>(c)); // - OK\n" +
" }\n" +
"\n" +
" public static final W<C> ok2() {\n" +
" final C c = new C();\n" +
" final Object o = new Object();\n" +
" // --- no check-method\n" +
" return new W<>(c, o); // - OK\n" +
" }\n" +
"\n" +
" public static final W<C> ok3() {\n" +
" final C c = new C();\n" +
" // --- no check-method\n" +
" return new W<>(c); // - OK\n" +
" }\n" +
"\n" +
" public static final W<C> ok4() {\n" +
" final C c = new C();\n" +
" final Object o = new Object();\n" +
" // --- this also compiles (my solution for now)\n" +
" final W<C> w = new W<>(c, o);\n" +
" return inspect(w);\n" +
" }\n" +
"}\n",
},
"----------\n" +
"1. ERROR in X.java (at line 34)\n" +
" return inspect(new W<C>(c, o)); // - WARNING: Redundant specification of type arguments <F.C> F.java\n" +
" ^\n" +
"Redundant specification of type arguments <X.C>\n" +
"----------\n",
null, false, customOptions);
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=449619, [1.8][compiler] Qualified <> allocation fails to compile.
public void test449619() {
String source = "public class X {\n" +
" public class Y<T> {\n" +
" }\n" +
" static void foo(Y<String> ys) {\n" +
" }\n" +
" public static void main(String[] args) {\n" +
" foo(new X().new Y<>());\n" +
" }\n" +
"}\n";
if (this.complianceLevel >= ClassFileConstants.JDK1_8)
this.runConformTest(
new String[] {
"X.java",
source,
},
"");
else
this.runNegativeTest(
new String[] {
"X.java",
source,
},
"----------\n" +
"1. ERROR in X.java (at line 7)\n" +
" foo(new X().new Y<>());\n" +
" ^^^\n" +
"The method foo(X.Y<String>) in the type X is not applicable for the arguments (X.Y<Object>)\n" +
"----------\n");
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=429733, [1.8][bytecode] Bad type on operand stack
public void test429733() {
runConformTest(
new String[] {
"X.java",
"public class X {\n" +
" public static void main(String[] args) {\n" +
" test(new Some<>(1.1d));\n" +
" }\n" +
" static <S> void test(Option<S> value) {\n" +
" }\n" +
" static interface Option<T> {\n" +
" }\n" +
" static class Some<T> implements Option<T> {\n" +
" Some(T value) {\n" +
" System.out.println(value);\n" +
" }\n" +
" }\n" +
"}\n"
},
"1.1");
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=429733, [1.8][bytecode] Bad type on operand stack
public void test429733a() {
runConformTest(
new String[] {
"X.java",
"public class X {\n" +
" public static void main(String[] args) {\n" +
" test(new Some<Double>(1.1d));\n" +
" }\n" +
" static <S> void test(Option<S> value) {\n" +
" }\n" +
" static interface Option<T> {\n" +
" }\n" +
" static class Some<T> implements Option<T> {\n" +
" Some(T value) {\n" +
" System.out.println(value);\n" +
" }\n" +
" }\n" +
"}\n"
},
"1.1");
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=375394
public void test375394a() {
this.runNegativeTest(
new String[] {
"X.java",
"public class X {\n" +
" B<C, ? extends C<C>, ? extends C<C>> b = new B<>();\n" +
"}\n" +
"class B <T, U extends C<T>, V extends U>{}\n" +
"class C<T> {}\n",
},
"----------\n" +
"1. WARNING in X.java (at line 2)\n" +
" B<C, ? extends C<C>, ? extends C<C>> b = new B<>();\n" +
" ^\n" +
"C is a raw type. References to generic type C<T> should be parameterized\n" +
"----------\n" +
"2. WARNING in X.java (at line 2)\n" +
" B<C, ? extends C<C>, ? extends C<C>> b = new B<>();\n" +
" ^\n" +
"C is a raw type. References to generic type C<T> should be parameterized\n" +
"----------\n" +
"3. WARNING in X.java (at line 2)\n" +
" B<C, ? extends C<C>, ? extends C<C>> b = new B<>();\n" +
" ^\n" +
"C is a raw type. References to generic type C<T> should be parameterized\n" +
"----------\n");
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=427728, [1.8] Type Inference rejects calls requiring boxing/unboxing
public void test427728b() {
runConformTest(
new String[] {
"X.java",
"import java.util.Collections;\n" +
"import java.util.LinkedHashMap;\n" +
"import java.util.Map;\n" +
"public class X {\n" +
" public static void main(String[] args) {\n" +
" Map<X, Integer> map = new LinkedHashMap<>();\n" +
" map.put(null, X.getInt());\n" +
" map.put(null, X.getint());\n" +
" }\n" +
" private static <T> int getInt() {\n" +
" return 0;\n" +
" }\n" +
" private static int getint() {\n" +
" return 0;\n" +
" }\n" +
"}\n"
},
"");
}
public void testBug456508() {
runNegativeTest(
new String[] {
"QueryAtom.java",
"public class QueryAtom<T, P> {\n" +
" public QueryAtom(SingularAttribute<? super T, P> path) {\n" +
" }\n" +
"}\n",
"SubqueryIn.java",
"public class SubqueryIn<S, P> {\n" +
" public SubqueryIn(QueryAtom<S, P>... subqueryAtoms) {\n" +
" }\n" +
"}\n",
"Test.java",
"class PAccount {}\n" +
"class PGroepAccount {}\n" +
"interface SingularAttribute<X, T> {}\n" +
"\n" +
"public class Test {\n" +
" public static volatile SingularAttribute<PGroepAccount, PAccount> account;\n" +
"\n" +
" public void nietInGroep() {\n" +
" recordFilter(new SubqueryIn<>(new QueryAtom<>(account)));\n" +
" }\n" +
"\n" +
" protected <P> void recordFilter(SubqueryIn<?, P> atom) {\n" +
" }\n" +
"}\n"
},
"----------\n" +
"1. WARNING in SubqueryIn.java (at line 2)\n" +
" public SubqueryIn(QueryAtom<S, P>... subqueryAtoms) {\n" +
" ^^^^^^^^^^^^^\n" +
"Type safety: Potential heap pollution via varargs parameter subqueryAtoms\n" +
"----------\n" +
"----------\n" +
"1. WARNING in Test.java (at line 9)\n" +
" recordFilter(new SubqueryIn<>(new QueryAtom<>(account)));\n" +
" ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^\n" +
"Type safety: A generic array of QueryAtom<PGroepAccount,PAccount> is created for a varargs parameter\n" +
"----------\n");
}
public void testBug462083() {
runConformTest(
new String[] {
"Java8InterfaceTest.java",
"public abstract class Java8InterfaceTest\n" +
"{\n" +
" public static interface Entity {}\n" +
"\n" +
" public static interface Service<T1 extends Entity> {}\n" +
"\n" +
" public static interface ServiceLocator<T2 extends Entity> {}\n" +
"\n" +
" public static class ConcreteClass<T3 extends Entity, S extends Service<T3>> implements ServiceLocator<T3> {}\n" +
"\n" +
" protected abstract <T4 extends Entity> ConcreteClass<T4, ?> getParameterized(T4 entity);\n" +
"\n" +
" protected <T5 extends Entity> ServiceLocator<T5> getInterface(T5 entity)\n" +
" {\n" +
" return getParameterized(entity);\n" +
" }\n" +
"}\n"
});
}
public void testBug469653() {
String codeContent =
"import java.util.*;\n" +
"\n" +
"class ImmutableList<E> {\n" +
" static <F> ImmutableList<F> copyOf(Iterable<? extends F> in) { return null; }\n" +
" ImmutableList<E> reverse() { return this; }\n" +
" Iterator<E> iterator() { return null; }\n" +
"}\n" +
"public class Code {\n" +
" public static void test() {\n" +
" Iterable<? extends String> services = null;\n" +
" Iterator<String> reverseServices = ImmutableList.copyOf(services).reverse().iterator();\n" +
" }\n" +
"}";
if (this.complianceLevel < ClassFileConstants.JDK1_8) {
runConformTest(
new String[] { "Code.java", codeContent });
} else {
runNegativeTest(
new String[] { "Code.java", codeContent },
"----------\n" +
"1. ERROR in Code.java (at line 11)\n" +
" Iterator<String> reverseServices = ImmutableList.copyOf(services).reverse().iterator();\n" +
" ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^\n" +
"Type mismatch: cannot convert from Iterator<capture#1-of ? extends String> to Iterator<String>\n" +
"----------\n");
}
}
public void testBug488649_JDK6791481_ex1() {
int count = 1;
runNegativeTest(
new String[] {
"Test.java",
"class Test<X> {\n" +
" X m(Class<X> c) {return null;}\n" +
" X x = m((Class)String.class);\n" +
"}\n"
},
"----------\n" +
(this.complianceLevel >= ClassFileConstants.JDK1_8
?
(count++)+". ERROR in Test.java (at line 3)\n" +
" X x = m((Class)String.class);\n" +
" ^^^^^^^^^^^^^^^^^^^^^^\n" +
"Type mismatch: cannot convert from Object to X\n" + // <- want to see this error, but at 1.7- we keep javac compatibility
"----------\n"
:
""
)+
(count++)+". WARNING in Test.java (at line 3)\n" +
" X x = m((Class)String.class);\n" +
" ^^^^^^^^^^^^^^^^^^^\n" +
"Type safety: The expression of type Class needs unchecked conversion to conform to Class<X>\n" +
"----------\n" +
(count++)+". WARNING in Test.java (at line 3)\n" +
" X x = m((Class)String.class);\n" +
" ^^^^^\n" +
"Class is a raw type. References to generic type Class<T> should be parameterized\n" +
"----------\n");
}
public static Class testClass() {
return GenericsRegressionTest_1_7.class;
}
}