diff options
Diffstat (limited to 'third_party/protobuf/3.6.0/java/core/src/test/java/com/google/protobuf/ExtensionRegistryFactoryTest.java')
-rw-r--r-- | third_party/protobuf/3.6.0/java/core/src/test/java/com/google/protobuf/ExtensionRegistryFactoryTest.java | 276 |
1 files changed, 276 insertions, 0 deletions
diff --git a/third_party/protobuf/3.6.0/java/core/src/test/java/com/google/protobuf/ExtensionRegistryFactoryTest.java b/third_party/protobuf/3.6.0/java/core/src/test/java/com/google/protobuf/ExtensionRegistryFactoryTest.java new file mode 100644 index 0000000000..6157e58966 --- /dev/null +++ b/third_party/protobuf/3.6.0/java/core/src/test/java/com/google/protobuf/ExtensionRegistryFactoryTest.java @@ -0,0 +1,276 @@ +// Protocol Buffers - Google's data interchange format +// Copyright 2008 Google Inc. All rights reserved. +// https://developers.google.com/protocol-buffers/ +// +// Redistribution and use in source and binary forms, with or without +// modification, are permitted provided that the following conditions are +// met: +// +// * Redistributions of source code must retain the above copyright +// notice, this list of conditions and the following disclaimer. +// * Redistributions in binary form must reproduce the above +// copyright notice, this list of conditions and the following disclaimer +// in the documentation and/or other materials provided with the +// distribution. +// * Neither the name of Google Inc. nor the names of its +// contributors may be used to endorse or promote products derived from +// this software without specific prior written permission. +// +// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +package com.google.protobuf; + +import protobuf_unittest.NonNestedExtension; +import protobuf_unittest.NonNestedExtensionLite; +import java.lang.reflect.Method; +import java.net.URLClassLoader; +import java.util.Arrays; +import java.util.Collections; +import java.util.HashSet; +import java.util.Set; +import junit.framework.Test; +import junit.framework.TestCase; +import junit.framework.TestSuite; + +/** + * Tests for {@link ExtensionRegistryFactory} and the {@link ExtensionRegistry} instances it + * creates. + * + * <p>This test simulates the runtime behaviour of the ExtensionRegistryFactory by delegating test + * definitions to two inner classes {@link InnerTest} and {@link InnerLiteTest}, the latter of + * which is executed using a custom ClassLoader, simulating the ProtoLite environment. + * + * <p>The test mechanism employed here is based on the pattern in + * {@code com.google.common.util.concurrent.AbstractFutureFallbackAtomicHelperTest} + */ +public class ExtensionRegistryFactoryTest extends TestCase { + + // A classloader which blacklists some non-Lite classes. + private static final ClassLoader LITE_CLASS_LOADER = getLiteOnlyClassLoader(); + + /** + * Defines the set of test methods which will be run. + */ + static interface RegistryTests { + void testCreate(); + void testEmpty(); + void testIsFullRegistry(); + void testAdd(); + void testAdd_immutable(); + } + + /** + * Test implementations for the non-Lite usage of ExtensionRegistryFactory. + */ + public static class InnerTest implements RegistryTests { + + @Override + public void testCreate() { + ExtensionRegistryLite registry = ExtensionRegistryFactory.create(); + + assertEquals(registry.getClass(), ExtensionRegistry.class); + } + + @Override + public void testEmpty() { + ExtensionRegistryLite emptyRegistry = ExtensionRegistryFactory.createEmpty(); + + assertEquals(emptyRegistry.getClass(), ExtensionRegistry.class); + assertEquals(emptyRegistry, ExtensionRegistry.EMPTY_REGISTRY); + } + + @Override + public void testIsFullRegistry() { + ExtensionRegistryLite registry = ExtensionRegistryFactory.create(); + assertTrue(ExtensionRegistryFactory.isFullRegistry(registry)); + } + + @Override + public void testAdd() { + ExtensionRegistryLite registry1 = ExtensionRegistryLite.newInstance(); + NonNestedExtensionLite.registerAllExtensions(registry1); + registry1.add(NonNestedExtensionLite.nonNestedExtensionLite); + + ExtensionRegistryLite registry2 = ExtensionRegistryLite.newInstance(); + NonNestedExtension.registerAllExtensions((ExtensionRegistry) registry2); + registry2.add(NonNestedExtension.nonNestedExtension); + + ExtensionRegistry fullRegistry1 = (ExtensionRegistry) registry1; + ExtensionRegistry fullRegistry2 = (ExtensionRegistry) registry2; + + assertTrue("Test is using a non-lite extension", + GeneratedMessageLite.GeneratedExtension.class.isAssignableFrom( + NonNestedExtensionLite.nonNestedExtensionLite.getClass())); + assertNull("Extension is not registered in masqueraded full registry", + fullRegistry1.findImmutableExtensionByName("protobuf_unittest.nonNestedExtension")); + GeneratedMessageLite.GeneratedExtension<NonNestedExtensionLite.MessageLiteToBeExtended, ?> + extension = registry1.findLiteExtensionByNumber( + NonNestedExtensionLite.MessageLiteToBeExtended.getDefaultInstance(), 1); + assertNotNull("Extension registered in lite registry", extension); + + assertTrue("Test is using a non-lite extension", + GeneratedMessage.GeneratedExtension.class.isAssignableFrom( + NonNestedExtension.nonNestedExtension.getClass())); + assertNotNull("Extension is registered in masqueraded full registry", + fullRegistry2.findImmutableExtensionByName("protobuf_unittest.nonNestedExtension")); + } + + @Override + public void testAdd_immutable() { + ExtensionRegistryLite registry1 = ExtensionRegistryLite.newInstance().getUnmodifiable(); + try { + NonNestedExtensionLite.registerAllExtensions(registry1); + fail(); + } catch (UnsupportedOperationException expected) {} + try { + registry1.add(NonNestedExtensionLite.nonNestedExtensionLite); + fail(); + } catch (UnsupportedOperationException expected) {} + + ExtensionRegistryLite registry2 = ExtensionRegistryLite.newInstance().getUnmodifiable(); + try { + NonNestedExtension.registerAllExtensions((ExtensionRegistry) registry2); + fail(); + } catch (IllegalArgumentException expected) {} + try { + registry2.add(NonNestedExtension.nonNestedExtension); + fail(); + } catch (IllegalArgumentException expected) {} + } + } + + /** + * Test implementations for the Lite usage of ExtensionRegistryFactory. + */ + public static final class InnerLiteTest implements RegistryTests { + + @Override + public void testCreate() { + ExtensionRegistryLite registry = ExtensionRegistryFactory.create(); + + assertEquals(registry.getClass(), ExtensionRegistryLite.class); + } + + @Override + public void testEmpty() { + ExtensionRegistryLite emptyRegistry = ExtensionRegistryFactory.createEmpty(); + + assertEquals(emptyRegistry.getClass(), ExtensionRegistryLite.class); + assertEquals(emptyRegistry, ExtensionRegistryLite.EMPTY_REGISTRY_LITE); + } + + @Override + public void testIsFullRegistry() { + ExtensionRegistryLite registry = ExtensionRegistryFactory.create(); + assertFalse(ExtensionRegistryFactory.isFullRegistry(registry)); + } + + @Override + public void testAdd() { + ExtensionRegistryLite registry = ExtensionRegistryLite.newInstance(); + NonNestedExtensionLite.registerAllExtensions(registry); + GeneratedMessageLite.GeneratedExtension<NonNestedExtensionLite.MessageLiteToBeExtended, ?> + extension = registry.findLiteExtensionByNumber( + NonNestedExtensionLite.MessageLiteToBeExtended.getDefaultInstance(), 1); + assertNotNull("Extension is registered in Lite registry", extension); + } + + @Override + public void testAdd_immutable() { + ExtensionRegistryLite registry = ExtensionRegistryLite.newInstance().getUnmodifiable(); + try { + NonNestedExtensionLite.registerAllExtensions(registry); + fail(); + } catch (UnsupportedOperationException expected) {} + } + } + + /** + * Defines a suite of tests which the JUnit3 runner retrieves by reflection. + */ + public static Test suite() { + TestSuite suite = new TestSuite(); + for (Method method : RegistryTests.class.getMethods()) { + suite.addTest(TestSuite.createTest(ExtensionRegistryFactoryTest.class, method.getName())); + } + return suite; + } + + /** + * Sequentially runs first the Lite and then the non-Lite test variant via classloader + * manipulation. + */ + @Override + public void runTest() throws Exception { + ClassLoader storedClassLoader = Thread.currentThread().getContextClassLoader(); + Thread.currentThread().setContextClassLoader(LITE_CLASS_LOADER); + try { + runTestMethod(LITE_CLASS_LOADER, InnerLiteTest.class); + } finally { + Thread.currentThread().setContextClassLoader(storedClassLoader); + } + try { + runTestMethod(storedClassLoader, InnerTest.class); + } finally { + Thread.currentThread().setContextClassLoader(storedClassLoader); + } + } + + private void runTestMethod(ClassLoader classLoader, Class<? extends RegistryTests> testClass) + throws Exception { + classLoader.loadClass(ExtensionRegistryFactory.class.getName()); + Class<?> test = classLoader.loadClass(testClass.getName()); + String testName = getName(); + test.getMethod(testName).invoke(test.newInstance()); + } + + /** + * Constructs a custom ClassLoader blacklisting the classes which are inspected in the SUT + * to determine the Lite/non-Lite runtime. + */ + private static ClassLoader getLiteOnlyClassLoader() { + ClassLoader testClassLoader = ExtensionRegistryFactoryTest.class.getClassLoader(); + final Set<String> classNamesNotInLite = + Collections.unmodifiableSet( + new HashSet<String>( + Arrays.asList( + ExtensionRegistryFactory.FULL_REGISTRY_CLASS_NAME, + ExtensionRegistry.EXTENSION_CLASS_NAME))); + + // Construct a URLClassLoader delegating to the system ClassLoader, and looking up classes + // in jar files based on the URLs already configured for this test's UrlClassLoader. + // Certain classes throw a ClassNotFoundException by design. + return new URLClassLoader(((URLClassLoader) testClassLoader).getURLs(), + ClassLoader.getSystemClassLoader()) { + @Override + public Class<?> loadClass(String name, boolean resolve) throws ClassNotFoundException { + if (classNamesNotInLite.contains(name)) { + throw new ClassNotFoundException("Class deliberately blacklisted by test."); + } + Class<?> loadedClass = null; + try { + loadedClass = findLoadedClass(name); + if (loadedClass == null) { + loadedClass = findClass(name); + if (resolve) { + resolveClass(loadedClass); + } + } + } catch (ClassNotFoundException e) { + loadedClass = super.loadClass(name, resolve); + } + return loadedClass; + } + }; + } +} |