| /******************************************************************************* |
| * Copyright (c) 2008, 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.core.internal.expressions.tests; |
| |
| import static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.assertFalse; |
| import static org.junit.Assert.assertNotSame; |
| import static org.junit.Assert.assertTrue; |
| import static org.junit.Assert.fail; |
| |
| import org.junit.FixMethodOrder; |
| import org.junit.Rule; |
| import org.junit.Test; |
| import org.junit.rules.TestName; |
| import org.junit.runners.MethodSorters; |
| import org.osgi.framework.Bundle; |
| import org.osgi.framework.BundleContext; |
| |
| import org.eclipse.core.internal.expressions.ExpressionPlugin; |
| import org.eclipse.core.internal.expressions.Expressions; |
| |
| |
| /** |
| * Tests for cache used in {@link Expressions#isInstanceOf(Object, String)}. |
| * <p> |
| * <b>WARNING:</b> These tests start, stop, and re-start the <code>com.ibm.icu</code> bundle. |
| * Don't include these in another test suite! |
| */ |
| @FixMethodOrder(MethodSorters.NAME_ASCENDING) |
| public class ExpressionTestsPluginUnloading { |
| |
| @Rule |
| public TestName name = new TestName(); |
| |
| @Test |
| public void test01PluginStopping() throws Exception { |
| Bundle bundle= getBundle("com.ibm.icu"); |
| |
| assertEquals(Bundle.STARTING, bundle.getState()); |
| |
| doTestInstanceofICUDecimalFormat(bundle); |
| assertEquals(Bundle.ACTIVE, bundle.getState()); |
| |
| bundle.stop(); |
| assertEquals(Bundle.RESOLVED, bundle.getState()); |
| |
| bundle.start(); |
| assertEquals(Bundle.ACTIVE, bundle.getState()); |
| |
| doTestInstanceofICUDecimalFormat(bundle); |
| } |
| |
| @Test |
| public void test02MultipleClassloaders() throws Exception { |
| Bundle expr= getBundle("org.eclipse.core.expressions.tests"); |
| Bundle icu= getBundle("com.ibm.icu"); |
| |
| Class<?> exprClass = expr.loadClass("com.ibm.icu.text.DecimalFormat"); |
| Class<?> icuClass = icu.loadClass("com.ibm.icu.text.DecimalFormat"); |
| assertNotSame(exprClass, icuClass); |
| |
| Object exprObj = exprClass.getDeclaredConstructor().newInstance(); |
| Object icuObj = icuClass.getDeclaredConstructor().newInstance(); |
| |
| assertInstanceOf(exprObj, "java.lang.Runnable", "java.lang.String"); |
| assertInstanceOf(exprObj, "java.lang.Object", "java.io.Serializable"); |
| |
| assertInstanceOf(icuObj, "java.io.Serializable", "java.lang.String"); |
| assertInstanceOf(icuObj, "java.text.Format", "java.lang.Runnable"); |
| } |
| |
| private void assertInstanceOf(Object obj, String isInstance, String isNotInstance) throws Exception { |
| Class<?> clazz = obj.getClass(); |
| |
| System.out.println( |
| "ExpressionTestsPluginUnloading#" + name.getMethodName() + "() - " + clazz.getName() + ": " |
| + clazz.hashCode()); |
| System.out.println( |
| "ExpressionTestsPluginUnloading#" + name.getMethodName() + "() - ClassLoader: " |
| + clazz.getClassLoader().hashCode()); |
| |
| for (int i= 0; i < 2; i++) { // test twice, second time is cached: |
| assertTrue(Expressions.isInstanceOf(obj, isInstance)); |
| assertFalse(Expressions.isInstanceOf(obj, isNotInstance)); |
| } |
| } |
| |
| private void doTestInstanceofICUDecimalFormat(Bundle bundle) throws Exception { |
| Class<?> clazz = bundle.loadClass("com.ibm.icu.text.DecimalFormat"); |
| Object decimalFormat = clazz.getDeclaredConstructor().newInstance(); |
| assertInstanceOf(decimalFormat, "com.ibm.icu.text.DecimalFormat", "java.text.NumberFormat"); |
| } |
| |
| private static Bundle getBundle(String bundleName) { |
| BundleContext bundleContext= ExpressionPlugin.getDefault().getBundleContext(); |
| Bundle[] bundles= bundleContext.getBundles(); |
| for (Bundle bundle : bundles) { |
| if (bundleName.equals(bundle.getSymbolicName())) { |
| return bundle; |
| } |
| } |
| fail("Could not find bundle: " + bundleName); |
| return null; |
| } |
| } |