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Add a SWTTest Junit extension to allow tests executed in the UI thread #2624
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64 changes: 64 additions & 0 deletions
64
bundles/org.eclipse.swt/Eclipse SWT/common/org/eclipse/swt/test/SWTTest.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,64 @@ | ||
| /******************************************************************************* | ||
| * Copyright (c) 2025 Christoph Läubrich 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: | ||
| * Christoph Läubrich - initial API and implementation | ||
| *******************************************************************************/ | ||
| package org.eclipse.swt.test; | ||
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| import java.lang.reflect.*; | ||
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| import org.eclipse.pde.api.tools.annotations.*; | ||
| import org.eclipse.swt.widgets.*; | ||
| import org.junit.jupiter.api.extension.*; | ||
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| /** | ||
| * The {@link SWTTest} is an extension that can be using in JUnit Platform | ||
| * Runners as an extension to execute the test code in the default display | ||
| * thread. | ||
| * <p> | ||
| * <b>Usage: </b>You would never use this in any client code but when writing a | ||
| * test for the JUnit Platform like in this example: | ||
| * </p> | ||
| * <p> | ||
| * <pre> | ||
| * @ExtendWith(SWTTest.class) | ||
| * public class MyTestThaRequireUI { | ||
| * | ||
| * } | ||
| * </pre> | ||
| * </p> | ||
| */ | ||
| @NoInstantiate | ||
| public final class SWTTest implements InvocationInterceptor { | ||
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| @Override | ||
| public void interceptTestMethod(Invocation<Void> invocation, ReflectiveInvocationContext<Method> invocationContext, | ||
| ExtensionContext extensionContext) throws Throwable { | ||
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| if (Display.getCurrent() == null) { | ||
| invocation.proceed(); | ||
| } else { | ||
| Throwable[] throwable = new Throwable[1]; | ||
| Display.getDefault().syncExec(() -> { | ||
| try { | ||
| invocation.proceed(); | ||
| } catch (Throwable t) { | ||
| throwable[0] = t; | ||
| } | ||
|
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| }); | ||
| Throwable t = throwable[0]; | ||
| if (t != null) { | ||
| throw t; | ||
| } | ||
| } | ||
| } | ||
| } | ||
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Should it be
Display.getCurrent() != null?