1 files changed, 96 insertions, 0 deletions
diff --git a/org.eclipse.text.tests/src/org/eclipse/text/tests/ConfigurableLineTrackerTest.java b/org.eclipse.text.tests/src/org/eclipse/text/tests/ConfigurableLineTrackerTest.java
new file mode 100644
index 00000000000..fe6f597485f
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+++ b/org.eclipse.text.tests/src/org/eclipse/text/tests/ConfigurableLineTrackerTest.java
@@ -0,0 +1,96 @@
+/*******************************************************************************
+ * Copyright (c) 2019 Thomas Wolf and others.
+ *
+ * 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
+ *******************************************************************************/
+package org.eclipse.text.tests;
+
+import org.junit.After;
+import org.junit.Before;
+import org.junit.Test;
+
+import org.eclipse.jface.text.ConfigurableLineTracker;
+import org.eclipse.jface.text.DefaultLineTracker;
+import org.eclipse.jface.text.GapTextStore;
+
+public class ConfigurableLineTrackerTest extends AbstractLineTrackerTest {
+
+	@Before
+	public void setUp() {
+		fText= new GapTextStore();
+	}
+
+	@After
+	public void tearDown() {
+		fTracker= null;
+		fText= null;
+	}
+
+	/**
+	 * Expected length of the tracked delimiter. First entry is length of first
+	 * delimiter and so on.
+	 */
+	private int[] lineEndLengths;
+
+	@Override
+	protected int getLineOffset(int line, int[] lines) {
+		int offset= 0;
+		for (int i= 0; i < line; i++) {
+			offset += (lines[i] + lineEndLengths[i]);
+		}
+		return offset;
+	}
+
+	private void setLegalDelimiters(String... delimiters) {
+		fTracker = new ConfigurableLineTracker(delimiters);
+	}
+
+	@Test
+	public void testLongestMatch() throws Exception {
+		setLegalDelimiters(DefaultLineTracker.DELIMITERS);
+		set("xxxx\r\nxx");
+		lineEndLengths = new int[] {2};
+		checkLines(new int[] {4, 2});
+	}
+
+	@Test
+	public void testMixedDefaultDelimiter() throws Exception {
+		setLegalDelimiters(DefaultLineTracker.DELIMITERS);
+		set("1234\r\n123\r1234\n1234567\r");
+		lineEndLengths = new int[] { 2, 1, 1, 1 };
+		checkLines(new int[] { 4, 3, 4, 7, 0 });
+		set("first\r\r\nthird");
+		lineEndLengths = new int[] { 1, 2 };
+		checkLines(new int[] { 5, 0, 5 });
+	}
+
+	@Test
+	public void testSingleDelimiter() throws Exception {
+		setLegalDelimiters("\n");
+		set("xxxx\nxx");
+		lineEndLengths = new int[] { 1 };
+		checkLines(new int[] { 4, 2 });
+	}
+
+	@Test
+	public void testAlternativeDelimiters1() throws Exception {
+		// create a line tracker with "show whitespace" characters as delimiter
+		setLegalDelimiters("\u00a4", "\u00b6", "\u00a4\u00b6");
+		set("xxxx\u00a4\u00b6xx");
+		lineEndLengths = new int[] { 2 };
+		checkLines(new int[] { 4, 2 });
+	}
+
+	@Test
+	public void testAlternativeDelimiters2() throws Exception {
+		setLegalDelimiters("{NewLine}", "[NewLine]");
+		set("A line{NewLine}AnotherLine[NewLine}A third line[newline]End");
+		lineEndLengths = new int[] { 9 };
+		checkLines(new int[] { 6, 44 });
+	}
+}