support for open/zero-length partitions / tests

2 files changed, 436 insertions, 0 deletions

diff --git a/org.eclipse.jface.text.tests/src/org/eclipse/jface/text/tests/rules/DefaultPartitionerTest.java b/org.eclipse.jface.text.tests/src/org/eclipse/jface/text/tests/rules/DefaultPartitionerTest.java
new file mode 100644
index 00000000000..4b6ad2ad9c2
--- /dev/null
+++ b/org.eclipse.jface.text.tests/src/org/eclipse/jface/text/tests/rules/DefaultPartitionerTest.java
@@ -0,0 +1,217 @@
+/*******************************************************************************
+ * Copyright (c) 2000, 2003 IBM Corporation and others.
+ * All rights reserved. This program and the accompanying materials 
+ * are made available under the terms of the Common Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/cpl-v10.html
+ * 
+ * Contributors:
+ *     IBM Corporation - initial API and implementation
+ *******************************************************************************/
+
+package org.eclipse.jface.text.tests.rules;
+
+import junit.framework.TestCase;
+
+import org.eclipse.jface.text.Document;
+import org.eclipse.jface.text.IDocument;
+import org.eclipse.jface.text.ITypedRegion;
+import org.eclipse.jface.text.rules.DefaultPartitioner;
+import org.eclipse.jface.text.rules.IPartitionTokenScanner;
+import org.eclipse.jface.text.rules.IPredicateRule;
+import org.eclipse.jface.text.rules.IToken;
+import org.eclipse.jface.text.rules.MultiLineRule;
+import org.eclipse.jface.text.rules.RuleBasedPartitionScanner;
+import org.eclipse.jface.text.rules.Token;
+
+
+/**
+ * @since 3.0
+ */
+public class DefaultPartitionerTest extends TestCase {
+
+	private static final String COMMENT= "comment";
+	private static final String DEFAULT= IDocument.DEFAULT_CONTENT_TYPE;
+	
+	private IDocument fDoc;
+	private DefaultPartitioner fPartitioner;
+
+	public void setUp() {
+		fDoc= new Document();
+		IPartitionTokenScanner scanner= new RuleBasedPartitionScanner() {
+			{
+				IToken comment= new Token(COMMENT);
+				IPredicateRule[] rules= new IPredicateRule[] { new MultiLineRule("/*", "*/", comment) };
+				setPredicateRules(rules);
+
+			}
+		};
+		fPartitioner= new DefaultPartitioner(scanner, new String[] { DEFAULT, COMMENT });
+		fDoc.setDocumentPartitioner(fPartitioner);
+		fPartitioner.connect(fDoc);
+	}
+
+	public void testGetPartition() {
+		fDoc.set("docu     ment/* comment */docu     ment");
+
+		int[] offsets= new int[] { 13, 26 };
+		assertGetPartition_InterleavingPartitions(offsets);
+	}
+
+	public void testGetPartitionEmptyMiddle() {
+		fDoc.set("docu     ment/* comment *//* comment */docu     ment");
+
+		int[] offsets= new int[] { 13, 26, 26, 39 };
+		assertGetPartition_InterleavingPartitions(offsets);
+	}
+
+	public void testGetPartitionEmptyStart() {
+		fDoc.set("/* comment */docu     ment");
+
+		int[] offsets= new int[] { 0, 13 };
+		assertGetPartition_InterleavingPartitions(offsets);
+	}
+
+	public void testGetPartitionEmptyEnd() {
+		fDoc.set("docu     ment/* comment */");
+
+		int[] offsets= new int[] { 13, 26 };
+		assertGetPartition_InterleavingPartitions(offsets);
+	}
+
+	public void testGetContentType() {
+		fDoc.set("docu     ment/* comment */docu     ment");
+
+		int[] offsets= new int[] { 13, 26 };
+		assertGetContentType_InterleavingPartitions(offsets);
+	}
+
+	public void testGetContentTypeEmptyMiddle() {
+		fDoc.set("docu     ment/* comment *//* comment */docu     ment");
+
+		int[] offsets= new int[] { 13, 26, 26, 39 };
+		assertGetContentType_InterleavingPartitions(offsets);
+	}
+
+	public void testGetContentTypeEmptyStart() {
+		fDoc.set("/* comment */docu     ment");
+
+		int[] offsets= new int[] { 0, 13 };
+		assertGetContentType_InterleavingPartitions(offsets);
+	}
+
+	public void testGetContentTypeEmptyEnd() {
+		fDoc.set("docu     ment/* comment */");
+
+		int[] offsets= new int[] { 13, 26 };
+		assertGetContentType_InterleavingPartitions(offsets);
+	}
+	
+	public void testComputePartitioning() {
+		fDoc.set("docu     ment/* comment */docu     ment");
+
+		int[] offsets= new int[] { 13, 26 };
+		assertComputePartitioning_InterleavingPartitions(offsets);
+	}
+
+	public void testComputePartitioningEmptyMiddle() {
+		fDoc.set("docu     ment/* comment *//* comment */docu     ment");
+
+		int[] offsets= new int[] { 13, 26, 26, 39 };
+		assertComputePartitioning_InterleavingPartitions(offsets);
+	}
+
+	public void testComputePartitioningEmptyStart() {
+		fDoc.set("/* comment */docu     ment");
+
+		int[] offsets= new int[] { 0, 13 };
+		assertComputePartitioning_InterleavingPartitions(offsets);
+	}
+
+	public void testComputePartitioningEmptyEnd() {
+		fDoc.set("docu     ment/* comment */");
+
+		int[] offsets= new int[] { 13, 26 };
+		assertComputePartitioning_InterleavingPartitions(offsets);
+	}
+
+	private void assertComputePartitioning_InterleavingPartitions(int[] offsets) {
+		ITypedRegion[] regions= fPartitioner.computePartitioning(0, fDoc.getLength());
+		
+		String type= DEFAULT;
+		int previousOffset= 0;
+		
+		int j= 0;
+		for (int i= 0; i <= offsets.length; i++) {
+			int offset= (i == offsets.length) ? fDoc.getLength() : offsets[i];
+			if (offset - previousOffset != 0) { // don't do empty partitions
+				ITypedRegion region= regions[j++];
+				
+				assertTypedRegion(region, previousOffset, offset, type);
+			}
+			
+			// advance
+			if (type == DEFAULT)
+				type= COMMENT;
+			else
+				type= DEFAULT;
+			previousOffset= offset;
+		}
+	}
+
+	private void assertGetContentType_InterleavingPartitions(int[] offsets) {
+		String type= DEFAULT;
+		int previousOffset= 0;
+		for (int i= 0; i <= offsets.length; i++) {
+			int offset= (i == offsets.length) ? fDoc.getLength() : offsets[i];
+			assertEqualPartitionType(previousOffset, offset, type);
+			
+			// advance
+			if (type == DEFAULT)
+				type= COMMENT;
+			else
+				type= DEFAULT;
+			previousOffset= offset;
+		}
+	}
+
+	private void assertGetPartition_InterleavingPartitions(int[] offsets) {
+		String type= DEFAULT;
+		int previousOffset= 0;
+		for (int i= 0; i <= offsets.length; i++) {
+			int offset= (i == offsets.length) ? fDoc.getLength() : offsets[i];
+			assertEqualPartition(previousOffset, offset, type);
+			
+			// advance
+			if (type == DEFAULT)
+				type= COMMENT;
+			else
+				type= DEFAULT;
+			previousOffset= offset;
+		}
+	}
+
+	private void assertEqualPartition(int offset, int end, String type) {
+		int from= offset;
+		int to= end - 1;
+		for (int i= from; i <= to; i++) {
+			ITypedRegion region= fPartitioner.getPartition(i);
+			assertTypedRegion(region, offset, end, type);
+		}
+	}
+
+	private void assertTypedRegion(ITypedRegion region, int offset, int end, String type) {
+		assertEquals(offset, region.getOffset());
+		assertEquals(end - offset, region.getLength());
+		assertEquals(type, region.getType());
+	}
+
+	private void assertEqualPartitionType(int offset, int end, String type) {
+		int from= offset;
+		int to= end - 1;
+		for (int i= from; i <= to; i++) {
+			assertEquals(type, fPartitioner.getContentType(i));
+		}
+	}
+
+}
diff --git a/org.eclipse.jface.text.tests/src/org/eclipse/jface/text/tests/rules/DefaultPartitionerZeroLengthTest.java b/org.eclipse.jface.text.tests/src/org/eclipse/jface/text/tests/rules/DefaultPartitionerZeroLengthTest.java
new file mode 100644
index 00000000000..3c00b5a419e
--- /dev/null
+++ b/org.eclipse.jface.text.tests/src/org/eclipse/jface/text/tests/rules/DefaultPartitionerZeroLengthTest.java
@@ -0,0 +1,219 @@
+/*******************************************************************************
+ * Copyright (c) 2000, 2003 IBM Corporation and others.
+ * All rights reserved. This program and the accompanying materials 
+ * are made available under the terms of the Common Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/cpl-v10.html
+ * 
+ * Contributors:
+ *     IBM Corporation - initial API and implementation
+ *******************************************************************************/
+
+package org.eclipse.jface.text.tests.rules;
+
+import junit.framework.TestCase;
+
+import org.eclipse.jface.text.Document;
+import org.eclipse.jface.text.IDocument;
+import org.eclipse.jface.text.ITypedRegion;
+import org.eclipse.jface.text.rules.DefaultPartitioner;
+import org.eclipse.jface.text.rules.IPartitionTokenScanner;
+import org.eclipse.jface.text.rules.IPredicateRule;
+import org.eclipse.jface.text.rules.IToken;
+import org.eclipse.jface.text.rules.MultiLineRule;
+import org.eclipse.jface.text.rules.RuleBasedPartitionScanner;
+import org.eclipse.jface.text.rules.Token;
+
+
+/**
+ * @since 3.0
+ */
+public class DefaultPartitionerZeroLengthTest extends TestCase {
+
+	private static final String COMMENT= "comment";
+	private static final String DEFAULT= IDocument.DEFAULT_CONTENT_TYPE;
+	
+	private IDocument fDoc;
+	private DefaultPartitioner fPartitioner;
+
+	public void setUp() {
+		fDoc= new Document();
+		IPartitionTokenScanner scanner= new RuleBasedPartitionScanner() {
+			{
+				IToken comment= new Token(COMMENT);
+				IPredicateRule[] rules= new IPredicateRule[] { new MultiLineRule("/*", "*/", comment) };
+				setPredicateRules(rules);
+
+			}
+		};
+		fPartitioner= new DefaultPartitioner(scanner, new String[] { DEFAULT, COMMENT });
+		fDoc.setDocumentPartitioner(fPartitioner);
+		fPartitioner.connect(fDoc);
+	}
+
+	public void testGetZeroLengthPartition() {
+		fDoc.set("docu     ment/* comment */docu     ment");
+
+		int[] offsets= new int[] { 13, 26 };
+		assertGetZeroLengthPartition_InterleavingPartitions(offsets);
+	}
+
+	public void testGetZeroLengthPartitionEmptyMiddle() {
+		fDoc.set("docu     ment/* comment *//* comment */docu     ment");
+
+		int[] offsets= new int[] { 13, 26, 26, 39 };
+		assertGetZeroLengthPartition_InterleavingPartitions(offsets);
+	}
+
+	public void testGetZeroLengthPartitionEmptyStart() {
+		fDoc.set("/* comment */docu     ment");
+
+		int[] offsets= new int[] { 0, 13 };
+		assertGetZeroLengthPartition_InterleavingPartitions(offsets);
+	}
+
+	public void testGetZeroLengthPartitionEmptyEnd() {
+		fDoc.set("docu     ment/* comment */");
+
+		int[] offsets= new int[] { 13, 26 };
+		assertGetZeroLengthPartition_InterleavingPartitions(offsets);
+	}
+
+	public void testGetZeroLengthContentType() {
+		fDoc.set("docu     ment/* comment */docu     ment");
+
+		int[] offsets= new int[] { 13, 26 };
+		assertGetZeroLengthContentType_InterleavingPartitions(offsets);
+	}
+
+	public void testGetZeroLengthContentTypeEmptyMiddle() {
+		fDoc.set("docu     ment/* comment *//* comment */docu     ment");
+
+		int[] offsets= new int[] { 13, 26, 26, 39 };
+		assertGetZeroLengthContentType_InterleavingPartitions(offsets);
+	}
+
+	public void testGetZeroLengthContentTypeEmptyStart() {
+		fDoc.set("/* comment */docu     ment");
+
+		int[] offsets= new int[] { 0, 13 };
+		assertGetZeroLengthContentType_InterleavingPartitions(offsets);
+	}
+
+	public void testGetZeroLengthContentTypeEmptyEnd() {
+		fDoc.set("docu     ment/* comment */");
+
+		int[] offsets= new int[] { 13, 26 };
+		assertGetZeroLengthContentType_InterleavingPartitions(offsets);
+	}
+	
+	public void testComputeZeroLengthPartitioning() {
+		fDoc.set("docu     ment/* comment */docu     ment");
+
+		int[] offsets= new int[] { 13, 26 };
+		assertComputeZeroLengthPartitioning_InterleavingPartitions(offsets);
+	}
+
+	public void testComputeZeroLengthPartitioningEmptyMiddle() {
+		fDoc.set("docu     ment/* comment *//* comment */docu     ment");
+
+		int[] offsets= new int[] { 13, 26, 26, 39 };
+		assertComputeZeroLengthPartitioning_InterleavingPartitions(offsets);
+	}
+
+	public void testComputeZeroLengthPartitioningEmptyStart() {
+		fDoc.set("/* comment */docu     ment");
+
+		int[] offsets= new int[] { 0, 13 };
+		assertComputeZeroLengthPartitioning_InterleavingPartitions(offsets);
+	}
+
+	public void testComputeZeroLengthPartitioningEmptyEnd() {
+		fDoc.set("docu     ment/* comment */");
+
+		int[] offsets= new int[] { 13, 26 };
+		assertComputeZeroLengthPartitioning_InterleavingPartitions(offsets);
+	}
+
+	private void assertComputeZeroLengthPartitioning_InterleavingPartitions(int[] offsets) {
+		ITypedRegion[] regions= fPartitioner.computePartitioning(0, fDoc.getLength(), true);
+		
+		String type= DEFAULT;
+		int previousOffset= 0;
+		
+		assertEquals(offsets.length + 1, regions.length);
+		for (int i= 0; i <= offsets.length; i++) {
+			int offset= (i == offsets.length) ? fDoc.getLength() : offsets[i];
+			ITypedRegion region= regions[i];
+			
+			assertTypedRegion(region, previousOffset, offset, type);
+			
+			// advance
+			if (type == DEFAULT)
+				type= COMMENT;
+			else
+				type= DEFAULT;
+			previousOffset= offset;
+		}
+	}
+
+	private void assertGetZeroLengthContentType_InterleavingPartitions(int[] offsets) {
+		String type= DEFAULT;
+		int previousOffset= 0;
+		for (int i= 0; i <= offsets.length; i++) {
+			int offset= (i == offsets.length) ? fDoc.getLength() : offsets[i];
+			assertEqualPartitionType(previousOffset, offset, type);
+			
+			// advance
+			if (type == DEFAULT)
+				type= COMMENT;
+			else
+				type= DEFAULT;
+			previousOffset= offset;
+		}
+	}
+
+	private void assertGetZeroLengthPartition_InterleavingPartitions(int[] offsets) {
+		String type= DEFAULT;
+		int previousOffset= 0;
+		for (int i= 0; i <= offsets.length; i++) {
+			int offset= (i == offsets.length) ? fDoc.getLength() : offsets[i];
+			assertEqualPartition(previousOffset, offset, type);
+			
+			// advance
+			if (type == DEFAULT)
+				type= COMMENT;
+			else
+				type= DEFAULT;
+			previousOffset= offset;
+		}
+	}
+
+	private boolean isOpenType(String type) {
+		return type.equals(DEFAULT);
+	}
+
+	private void assertEqualPartition(int offset, int inclusiveEnd, String type) {
+		int from= isOpenType(type) ? offset : offset + 1;
+		int to= isOpenType(type) ? inclusiveEnd : inclusiveEnd - 1;
+		for (int i= from; i <= to; i++) {
+			ITypedRegion region= fPartitioner.getPartition(i, true);
+			assertTypedRegion(region, offset, inclusiveEnd, type);
+		}
+	}
+
+	private void assertTypedRegion(ITypedRegion region, int offset, int inclusiveEnd, String type) {
+		assertEquals(offset, region.getOffset());
+		assertEquals(inclusiveEnd - offset, region.getLength());
+		assertEquals(type, region.getType());
+	}
+
+	private void assertEqualPartitionType(int offset, int inclusiveEnd, String type) {
+		int from= isOpenType(type) ? offset : offset + 1;
+		int to= isOpenType(type) ? inclusiveEnd : inclusiveEnd - 1;
+		for (int i= from; i <= to; i++) {
+			assertEquals(type, fPartitioner.getContentType(i, true));
+		}
+	}
+
+}