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ptziegler
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Migrate Label test case from WindowBuilder project to Draw2D
This test case is used by the WindowBuilder project to verify the correctness of its forked Label class. Because this class is about to be deleted in favor of the Draw2D class, the corresponding test case should be moved to the GEF project.
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‎org.eclipse.draw2d.tests/src/org/eclipse/draw2d/test/Draw2dTestSuite.java‎

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/*******************************************************************************
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* Copyright (c) 2000, 2024 IBM Corporation and others.
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* Copyright (c) 2000, 2025 IBM Corporation and others.
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*
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* This program and the accompanying materials are made available under the
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* terms of the Eclipse Public License 2.0 which is available at
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ShapeTest.class,
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InsetsTest.class,
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DirectedGraphLayoutTest.class,
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ScrollPaneTests.class
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ScrollPaneTests.class,
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LabelTest.class
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})
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public class Draw2dTestSuite {
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}

‎org.eclipse.draw2d.tests/src/org/eclipse/draw2d/test/LabelTest.java‎

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/*******************************************************************************
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* Copyright (c) 2011, 2025 Google, Inc. and others.
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*
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* This program and the accompanying materials are made available under the
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* terms of the Eclipse Public License 2.0 which is available at
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* https://www.eclipse.org/legal/epl-2.0.
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*
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* SPDX-License-Identifier: EPL-2.0
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*
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* Contributors:
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* Google, Inc. - initial API and implementation
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*******************************************************************************/
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package org.eclipse.draw2d.test;
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import org.eclipse.swt.SWT;
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import org.eclipse.swt.graphics.Font;
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import org.eclipse.swt.graphics.GC;
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import org.eclipse.swt.widgets.Display;
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import org.eclipse.draw2d.CompoundBorder;
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import org.eclipse.draw2d.Label;
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import org.eclipse.draw2d.LineBorder;
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import org.eclipse.draw2d.MarginBorder;
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import org.eclipse.draw2d.geometry.Dimension;
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import org.eclipse.draw2d.geometry.Insets;
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import org.eclipse.draw2d.test.utils.TestFigure;
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import org.eclipse.draw2d.test.utils.TestLogger;
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import org.junit.jupiter.api.AfterAll;
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import org.junit.jupiter.api.BeforeAll;
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import org.junit.jupiter.api.Test;
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/**
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* @author lobas_av
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*/
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public class LabelTest extends BaseTestCase {
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private static Font testFont;
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@BeforeAll
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public static void setUpAll() {
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testFont = new Font(null, "", 100, SWT.NONE); //$NON-NLS-1$
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}
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@AfterAll
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public static void tearDownAll() {
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testFont.dispose();
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}
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////////////////////////////////////////////////////////////////////////////
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//
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// Test
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//
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////////////////////////////////////////////////////////////////////////////
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@Test
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@SuppressWarnings("static-method")
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public void test_text() throws Exception {
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// check text for new empty Label
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assertEquals("", new Label().getText()); //$NON-NLS-1$
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//
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// check text for Label created by constructor Label(String)
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assertEquals("Column: 1", new Label("Column: 1").getText()); //$NON-NLS-1$ //$NON-NLS-2$
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//
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Label label = new Label();
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//
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// check work setText()/getText()
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label.setText("123ZzzzZ"); //$NON-NLS-1$
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assertEquals("123ZzzzZ", label.getText()); //$NON-NLS-1$
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//
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// check work setText()/getText()
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label.setText("Row: 0"); //$NON-NLS-1$
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assertEquals("Row: 0", label.getText()); //$NON-NLS-1$
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//
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// check work setText()/getText()
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label.setText(null);
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assertEquals("", label.getText()); //$NON-NLS-1$
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}
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@Test
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@SuppressWarnings("static-method")
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public void test_resetState() throws Exception {
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TestLogger actualLogger = new TestLogger();
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//
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TestFigure parentFigure = new TestFigure(actualLogger);
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//
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TestLogger expectedLogger = new TestLogger();
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//
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Label label = new Label();
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parentFigure.add(label);
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actualLogger.clear();
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//
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// check no reset state during setText() if text not change
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label.setText(""); //$NON-NLS-1$
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actualLogger.assertEmpty();
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//
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// check no reset state during setText() if text not change
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label.setText(null);
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actualLogger.assertEmpty();
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//
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// check reset state during setText()
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label.setText("123"); //$NON-NLS-1$
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expectedLogger.log("invalidate()"); //$NON-NLS-1$
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expectedLogger.log("repaint(0, 0, 0, 0)"); //$NON-NLS-1$
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actualLogger.assertEquals(expectedLogger);
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//
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// check no reset state during setText() if text not change
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label.setText("123"); //$NON-NLS-1$
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actualLogger.assertEmpty();
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//
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// check reset state during setText()
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label.setText("231"); //$NON-NLS-1$
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expectedLogger.log("invalidate()"); //$NON-NLS-1$
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expectedLogger.log("repaint(0, 0, 0, 0)"); //$NON-NLS-1$
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actualLogger.assertEquals(expectedLogger);
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//
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// check reset state during setText()
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label.setText(null);
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expectedLogger.log("invalidate()"); //$NON-NLS-1$
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expectedLogger.log("repaint(0, 0, 0, 0)"); //$NON-NLS-1$
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actualLogger.assertEquals(expectedLogger);
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}
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@Test
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@SuppressWarnings("static-method")
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public void test_getPreferredSize() throws Exception {
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Label label = new Label();
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assertTextSize(label);
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Dimension size1 = label.getPreferredSize();
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//
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// check calc preferred size if text is changed
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label.setText("1234"); //$NON-NLS-1$
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Dimension size2 = label.getPreferredSize();
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assertTextSize(label);
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assertNotSame(size1, size2);
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assertSame(size2, label.getPreferredSize());
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//
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// check calc preferred size if font is changed
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label.setFont(new Font(null, "", 100, SWT.NONE)); //$NON-NLS-1$
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assertNotSame(size2, label.getPreferredSize());
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assertTextSize(label);
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//
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// check calc preferred size if set border
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label.setBorder(new CompoundBorder(new LineBorder(), new MarginBorder(2)));
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assertTextSize(label);
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}
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private static final void assertTextSize(Label label) throws Exception {
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// create calc GC
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GC gc = new GC(Display.getDefault());
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// set label font
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gc.setFont(label.getFont());
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// calc text size
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org.eclipse.swt.graphics.Point size = gc.textExtent(label.getText());
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// dispose calc GC
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gc.dispose();
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// get label border insets and calc expected preferred size
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Insets insets = label.getInsets();
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Dimension expectedSize = new Dimension(size).expand(insets.getWidth(), insets.getHeight());
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//
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assertEquals(expectedSize, label.getPreferredSize());
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}
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}

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