| /******************************************************************************* |
| * Copyright (c) 2009, 2018 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 |
| *******************************************************************************/ |
| package org.eclipse.equinox.common.tests; |
| |
| import org.eclipse.core.runtime.ISafeRunnable; |
| import org.eclipse.core.runtime.ISafeRunnableWithResult; |
| import org.eclipse.core.runtime.OperationCanceledException; |
| import org.eclipse.core.runtime.SafeRunner; |
| import org.eclipse.core.tests.harness.CoreTest; |
| |
| /** |
| * Tests for {@link SafeRunner}. |
| */ |
| public class SafeRunnerTest extends CoreTest { |
| |
| /** |
| * Ensures that cancellation exceptions are handled |
| */ |
| public void testOperationCanceledExceptionAreHandled() { |
| try { |
| SafeRunner.run(() -> { |
| throw new OperationCanceledException(); |
| }); |
| } catch (OperationCanceledException e) { |
| fail("OperationCanceledException unexpectedly caught.", e); |
| } |
| } |
| |
| public void testAssertionErrorIsCaught() { |
| assertExceptionHandled(new AssertionError()); |
| } |
| |
| public void testLinkageErrorIsCaught() { |
| assertExceptionHandled(new LinkageError()); |
| } |
| |
| public void testRuntimeExceptionIsCaught() { |
| assertExceptionHandled(new RuntimeException()); |
| } |
| |
| public void testRethrowsError() { |
| assertExceptionRethrown(new Error()); |
| } |
| |
| public void testRethrowsOutOfMemoryError() { |
| assertExceptionRethrown(new OutOfMemoryError()); |
| } |
| |
| public void testNull() { |
| try { |
| SafeRunner.run(null); |
| fail("1.0"); |
| } catch (RuntimeException e) { |
| // expected |
| } |
| } |
| |
| /** |
| * Ensures that exceptions are propagated when the safe runner re-throws it |
| */ |
| public void testRethrow() { |
| IllegalArgumentException caughtException = null; |
| try { |
| SafeRunner.run(new ISafeRunnable() { |
| @Override |
| public void handleException(Throwable exception) { |
| if (exception instanceof IllegalArgumentException) { |
| throw (IllegalArgumentException) exception; |
| } |
| } |
| |
| @Override |
| public void run() throws Exception { |
| throw new IllegalArgumentException(); |
| } |
| }); |
| } catch (IllegalArgumentException e) { |
| caughtException = e; |
| } |
| assertNotNull("Cathed exception expected.", caughtException); |
| |
| } |
| |
| public void testWithResult() { |
| assertEquals("TestRun", SafeRunner.run(() -> "TestRun")); |
| } |
| |
| public void testWithResultReturnsNullOnException() { |
| ISafeRunnableWithResult<String> code = () -> { |
| throw new IllegalArgumentException(); |
| }; |
| assertNull(SafeRunner.run(code)); |
| } |
| |
| private void assertExceptionRethrown(Throwable current) { |
| Throwable caughtException = null; |
| try { |
| SafeRunner.run(new ISafeRunnable() { |
| |
| @Override |
| public void run() throws Exception { |
| if (current instanceof Exception) { |
| throw (Exception) current; |
| } else if (current instanceof Error) { |
| throw (Error) current; |
| } |
| } |
| }); |
| } catch (Throwable t) { |
| caughtException = t; |
| } |
| assertEquals("Unexpected exception.", current, caughtException); |
| } |
| |
| private void assertExceptionHandled(Throwable throwable) { |
| final Throwable[] handled = new Throwable[1]; |
| try { |
| SafeRunner.run(new ISafeRunnable() { |
| @Override |
| public void handleException(Throwable exception) { |
| handled[0] = exception; |
| } |
| |
| @Override |
| public void run() throws Exception { |
| if (throwable instanceof Exception) { |
| throw (Exception) throwable; |
| } else if (throwable instanceof Error) { |
| throw (Error) throwable; |
| } |
| } |
| }); |
| } catch (Throwable t) { |
| fail("Exception unexpectedly caught.", t); |
| } |
| assertEquals("Unexpected exception.", throwable, handled[0]); |
| } |
| } |