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/*******************************************************************************
* Copyright (C) 2015, Thomas Wolf <thomas.wolf@paranor.ch>
*
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*******************************************************************************/
package org.eclipse.egit.ui.internal.dialogs;
import static org.junit.Assert.assertEquals;
import static org.mockito.Mockito.when;
import java.util.Arrays;
import org.eclipse.jface.preference.IPreferenceStore;
import org.eclipse.jface.text.Document;
import org.eclipse.jface.text.IDocument;
import org.eclipse.jface.text.IRegion;
import org.eclipse.jface.text.ITextViewer;
import org.eclipse.jface.text.TextAttribute;
import org.eclipse.jface.text.hyperlink.AbstractHyperlinkDetector;
import org.eclipse.jface.text.hyperlink.IHyperlink;
import org.eclipse.jface.text.hyperlink.IHyperlinkDetector;
import org.eclipse.jface.text.hyperlink.URLHyperlinkDetector;
import org.eclipse.jface.text.rules.IToken;
import org.eclipse.jface.text.source.ISourceViewer;
import org.eclipse.jface.text.source.SourceViewerConfiguration;
import org.eclipse.ui.texteditor.AbstractTextEditor;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.mockito.Mock;
import org.mockito.runners.MockitoJUnitRunner;
@RunWith(MockitoJUnitRunner.class)
public class HyperlinkTokenScannerTest {
@Mock
private ISourceViewer viewer;
@Mock
private SourceViewerConfiguration configuration;
@Mock
private IPreferenceStore preferenceStore;
private IHyperlinkDetector[] detectors = new IHyperlinkDetector[] {
new URLHyperlinkDetector() };
private IHyperlinkDetector[] detectorsWithFailure = new IHyperlinkDetector[] {
new URLHyperlinkDetector(), new CrashingHyperlinkDetector() };
@Test
public void tokenizeEmpty() {
String testString = "";
String expected = "";
assertTokens(testString, 0, testString.length(), expected);
}
@Test
public void tokenizeNoHyperlinks() {
String testString = "hello world";
String expected = "DDDDDDDDDDD";
assertTokens(testString, 0, testString.length(), expected);
}
@Test
public void tokenizeLeadingHyperlink() {
String testString = "http://foo bar";
String expected = "HHHHHHHHHHDDDD";
assertTokens(testString, 0, testString.length(), expected);
}
@Test
public void tokenizeEmbeddedHyperlink() {
String testString = "Link: http://foo bar";
String expected = "DDDDDDHHHHHHHHHHDDDD";
assertTokens(testString, 0, testString.length(), expected);
}
@Test
public void tokenizeMultipleHyperlinksSimple() {
String testString = "Link: http://foo http://www.example.com bar";
String expected = "DDDDDDHHHHHHHHHHDHHHHHHHHHHHHHHHHHHHHHHDDDD";
assertTokens(testString, 0, testString.length(), expected);
}
@Test
public void tokenizeMultipleHyperlinksMultiline() {
String testString = "Link: http://foo\n\n* http://foo\n* ftp://somewhere\n\nTwo links above.";
String expected = "DDDDDDHHHHHHHHHHDDDDHHHHHHHHHHDDDHHHHHHHHHHHHHHHDDDDDDDDDDDDDDDDDD";
assertTokens(testString, 0, testString.length(), expected);
}
@Test
public void tokenizeHyperlinksOutsideRegion() {
String testString = "Link: http://foo\n\n* http://foo\n* ftp://somewhere\n\nTwo links above.";
String expected = "DDDDD ";
assertTokens(testString, 0, 5, expected);
expected = " DDDDDDDDDDDD ";
assertTokens(testString, 50, 12, expected);
}
@Test
public void tokenizeHyperlinksCutByRegion() {
String testString = "Link: http://foo\n\n* http://foo\n* ftp://somewhere\n\nTwo links above.";
String expected = "DDDDDDHHHHHHHH ";
assertTokens(testString, 0, 14, expected);
expected = " HDDDDHHHHHHHHH ";
assertTokens(testString, 15, 14, expected);
}
@Test
public void tokenizeWithFailingDetector() {
String testString = "Link: http://foo bar";
String expected = "DDDDDDHHHHHHHHHHDDDD";
assertTokens(testString, 0, testString.length(), detectorsWithFailure,
expected);
// With only a failing detector
expected = "DDDDDDDDDDDDDDDDDDDD";
assertTokens(testString, 0, testString.length(),
new IHyperlinkDetector[] { new CrashingHyperlinkDetector() },
expected);
}
@Test
public void tokenizeWithoutDetectors() {
String testString = "Link: http://foo bar";
String expected = "DDDDDDDDDDDDDDDDDDDD";
assertTokens(testString, 0, testString.length(),
new IHyperlinkDetector[] {}, expected);
}
private void assertTokens(String text, int offset, int length,
String expected) {
assertTokens(text, offset, length, detectors, expected);
}
@SuppressWarnings("boxing")
private void assertTokens(String text, int offset, int length,
IHyperlinkDetector[] hyperlinkDetectors, String expected) {
assertEquals("Test definition problem: 'expected' length mismatch",
text.length(), expected.length());
IDocument testDocument = new Document(text);
when(viewer.getDocument()).thenReturn(testDocument);
when(configuration.getHyperlinkDetectors(viewer))
.thenReturn(hyperlinkDetectors);
when(preferenceStore
.getBoolean(AbstractTextEditor.PREFERENCE_HYPERLINKS_ENABLED))
.thenReturn(true);
when(preferenceStore.getBoolean(
"org.eclipse.ui.internal.editors.text.URLHyperlinkDetector"))
.thenReturn(hyperlinkDetectors.length == 0
|| (hyperlinkDetectors[0] instanceof CrashingHyperlinkDetector));
HyperlinkTokenScanner scanner = new HyperlinkTokenScanner(configuration,
viewer, preferenceStore, null);
scanner.setRangeAndColor(testDocument, offset, length, null);
IToken token = null;
char[] found = new char[text.length()];
Arrays.fill(found, ' ');
while (!(token = scanner.nextToken()).isEOF()) {
int tokenOffset = scanner.getTokenOffset();
int tokenLength = scanner.getTokenLength();
char ch = 'x';
Object data = token.getData();
if (data == null) {
ch = 'D';
} else if (data instanceof TextAttribute) {
int style = ((TextAttribute) data).getStyle();
if ((style & TextAttribute.UNDERLINE) != 0) {
ch = 'H';
}
}
Arrays.fill(found, tokenOffset, tokenOffset + tokenLength, ch);
}
assertEquals("Unexpected tokens", expected, new String(found));
}
private static class CrashingHyperlinkDetector
extends AbstractHyperlinkDetector {
@Override
public IHyperlink[] detectHyperlinks(ITextViewer textViewer,
IRegion region, boolean canShowMultipleHyperlinks) {
throw new IllegalStateException(
"CrashingHyperlinkDetector fails on purpose");
}
}
}
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