core/org.eclipse.cdt.ui.tests/ui/org/eclipse/cdt/ui/tests/text/IndentActionTest.java

/*******************************************************************************
 * Copyright (c) 2005, 2012 IBM Corporation 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
 *
 * Contributors:
 *     IBM Corporation - initial API and implementation
 *     Anton Leherbauer (Wind River Systems)
 *     Sergey Prigogin (Google)
 *******************************************************************************/
package org.eclipse.cdt.ui.tests.text;

import java.util.ListResourceBundle;

import org.eclipse.cdt.core.CCorePlugin;
import org.eclipse.cdt.core.formatter.DefaultCodeFormatterConstants;
import org.eclipse.cdt.core.model.ICProject;
import org.eclipse.cdt.core.testplugin.CProjectHelper;
import org.eclipse.cdt.internal.ui.actions.IndentAction;
import org.eclipse.cdt.internal.ui.editor.CEditor;
import org.eclipse.cdt.ui.testplugin.EditorTestHelper;
import org.eclipse.cdt.ui.testplugin.ResourceTestHelper;
import org.eclipse.jface.text.IDocument;
import org.eclipse.jface.text.source.SourceViewer;

import junit.extensions.TestSetup;
import junit.framework.Test;
import junit.framework.TestCase;
import junit.framework.TestSuite;

/**
 * Test the IndentAction.
 */
public class IndentActionTest extends TestCase {
	private static final String PROJECT = "IndentTests";

	private static final class EmptyBundle extends ListResourceBundle {
		@Override
		protected Object[][] getContents() {
			return new Object[0][];
		}
	}

	protected static class IndentTestSetup extends TestSetup {
		private ICProject fCProject;

		public IndentTestSetup(Test test) {
			super(test);
		}

		@Override
		protected void setUp() throws Exception {
			super.setUp();

			fCProject = EditorTestHelper.createCProject(PROJECT, "resources/indentation");
			fCProject.setOption(DefaultCodeFormatterConstants.FORMATTER_TAB_CHAR, CCorePlugin.TAB);
		}

		@Override
		protected void tearDown() throws Exception {
			if (fCProject != null)
				CProjectHelper.delete(fCProject);

			super.tearDown();
		}
	}

	public static Test suite() {
		return new IndentTestSetup(new TestSuite(IndentActionTest.class));
	}

	private CEditor fEditor;
	private SourceViewer fSourceViewer;
	private IDocument fDocument;

	@Override
	protected void setUp() throws Exception {
		String filename = createFileName("Before");
		fEditor = (CEditor) EditorTestHelper.openInEditor(ResourceTestHelper.findFile(filename), true);
		fSourceViewer = EditorTestHelper.getSourceViewer(fEditor);
		fDocument = fSourceViewer.getDocument();
	}

	@Override
	protected void tearDown() throws Exception {
		EditorTestHelper.closeEditor(fEditor);
	}

	private void assertIndentResult(boolean isTabAction) throws Exception {
		String afterFile = createFileName("After");
		String expected = ResourceTestHelper.read(afterFile).toString();

		new IndentAction(new EmptyBundle(), "prefix", fEditor, isTabAction).run();

		assertEquals(expected, fDocument.get());
	}

	private String createFileName(String qualifier) {
		String name = getName();
		name = name.substring(4, 5).toLowerCase() + name.substring(5);
		return "/" + PROJECT + "/src/" + name + "/" + qualifier + ".cpp";
	}

	private void selectAll() {
		fSourceViewer.setSelectedRange(0, fDocument.getLength());
	}

	public void testUnchanged() throws Exception {
		selectAll();
		assertIndentResult(false);
	}

	public void testSample() throws Exception {
		selectAll();
		assertIndentResult(false);
	}

	public void testComplex() throws Exception {
		selectAll();
		assertIndentResult(false);
	}

	// See http://bugs.eclipse.org/510794
	public void testRawString() throws Exception {
		fSourceViewer.setSelectedRange(fDocument.getLineOffset(1) + 1, 0);
		assertIndentResult(true);
	}
}