| /* |
| * Copyright (C) 2008 The Guava Authors |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package com.google.common.io; |
| |
| import static com.google.common.base.CharMatcher.whitespace; |
| import static com.google.common.truth.Truth.assertThat; |
| |
| import com.google.common.base.Charsets; |
| import com.google.common.collect.ImmutableList; |
| import com.google.common.testing.NullPointerTester; |
| import java.io.ByteArrayInputStream; |
| import java.io.ByteArrayOutputStream; |
| import java.io.DataInputStream; |
| import java.io.File; |
| import java.io.IOException; |
| import java.io.PrintWriter; |
| import java.net.URL; |
| import java.net.URLClassLoader; |
| import java.util.ArrayList; |
| import java.util.List; |
| import junit.framework.TestSuite; |
| |
| /** |
| * Unit test for {@link Resources}. |
| * |
| * @author Chris Nokleberg |
| */ |
| |
| public class ResourcesTest extends IoTestCase { |
| |
| public static TestSuite suite() { |
| TestSuite suite = new TestSuite(); |
| suite.addTest( |
| ByteSourceTester.tests( |
| "Resources.asByteSource[URL]", SourceSinkFactories.urlByteSourceFactory(), true)); |
| suite.addTest( |
| CharSourceTester.tests( |
| "Resources.asCharSource[URL, Charset]", |
| SourceSinkFactories.urlCharSourceFactory(), |
| false)); |
| suite.addTestSuite(ResourcesTest.class); |
| return suite; |
| } |
| |
| public void testToString() throws IOException { |
| URL resource = getClass().getResource("testdata/i18n.txt"); |
| assertEquals(I18N, Resources.toString(resource, Charsets.UTF_8)); |
| assertThat(Resources.toString(resource, Charsets.US_ASCII)).isNotEqualTo(I18N); |
| } |
| |
| public void testToToByteArray() throws IOException { |
| byte[] data = Resources.toByteArray(classfile(Resources.class)); |
| assertEquals(0xCAFEBABE, new DataInputStream(new ByteArrayInputStream(data)).readInt()); |
| } |
| |
| public void testReadLines() throws IOException { |
| // TODO(chrisn): Check in a better resource |
| URL resource = getClass().getResource("testdata/i18n.txt"); |
| assertEquals(ImmutableList.of(I18N), Resources.readLines(resource, Charsets.UTF_8)); |
| } |
| |
| public void testReadLines_withLineProcessor() throws IOException { |
| URL resource = getClass().getResource("testdata/alice_in_wonderland.txt"); |
| LineProcessor<List<String>> collectAndLowercaseAndTrim = |
| new LineProcessor<List<String>>() { |
| List<String> collector = new ArrayList<>(); |
| |
| @Override |
| public boolean processLine(String line) { |
| collector.add(whitespace().trimFrom(line)); |
| return true; |
| } |
| |
| @Override |
| public List<String> getResult() { |
| return collector; |
| } |
| }; |
| List<String> result = |
| Resources.readLines(resource, Charsets.US_ASCII, collectAndLowercaseAndTrim); |
| assertEquals(3600, result.size()); |
| assertEquals("ALICE'S ADVENTURES IN WONDERLAND", result.get(0)); |
| assertEquals("THE END", result.get(result.size() - 1)); |
| } |
| |
| public void testCopyToOutputStream() throws IOException { |
| ByteArrayOutputStream out = new ByteArrayOutputStream(); |
| URL resource = getClass().getResource("testdata/i18n.txt"); |
| Resources.copy(resource, out); |
| assertEquals(I18N, out.toString("UTF-8")); |
| } |
| |
| public void testGetResource_notFound() { |
| try { |
| Resources.getResource("no such resource"); |
| fail(); |
| } catch (IllegalArgumentException e) { |
| assertThat(e).hasMessageThat().isEqualTo("resource no such resource not found."); |
| } |
| } |
| |
| public void testGetResource() { |
| assertNotNull(Resources.getResource("com/google/common/io/testdata/i18n.txt")); |
| } |
| |
| public void testGetResource_relativePath_notFound() { |
| try { |
| Resources.getResource(getClass(), "com/google/common/io/testdata/i18n.txt"); |
| fail(); |
| } catch (IllegalArgumentException e) { |
| assertThat(e) |
| .hasMessageThat() |
| .isEqualTo( |
| "resource com/google/common/io/testdata/i18n.txt" |
| + " relative to com.google.common.io.ResourcesTest not found."); |
| } |
| } |
| |
| public void testGetResource_relativePath() { |
| assertNotNull(Resources.getResource(getClass(), "testdata/i18n.txt")); |
| } |
| |
| public void testGetResource_contextClassLoader() throws IOException { |
| // Check that we can find a resource if it is visible to the context class |
| // loader, even if it is not visible to the loader of the Resources class. |
| |
| File tempFile = createTempFile(); |
| PrintWriter writer = new PrintWriter(tempFile, "UTF-8"); |
| writer.println("rud a chur ar an méar fhada"); |
| writer.close(); |
| |
| // First check that we can't find it without setting the context loader. |
| // This is a sanity check that the test doesn't spuriously pass because |
| // the resource is visible to the system class loader. |
| try { |
| Resources.getResource(tempFile.getName()); |
| fail("Should get IllegalArgumentException"); |
| } catch (IllegalArgumentException expected) { |
| } |
| |
| // Now set the context loader to one that should find the resource. |
| URL baseUrl = tempFile.getParentFile().toURI().toURL(); |
| URLClassLoader loader = new URLClassLoader(new URL[] {baseUrl}); |
| ClassLoader oldContextLoader = Thread.currentThread().getContextClassLoader(); |
| try { |
| Thread.currentThread().setContextClassLoader(loader); |
| URL url = Resources.getResource(tempFile.getName()); |
| String text = Resources.toString(url, Charsets.UTF_8); |
| assertEquals("rud a chur ar an méar fhada\n", text); |
| } finally { |
| Thread.currentThread().setContextClassLoader(oldContextLoader); |
| } |
| } |
| |
| public void testGetResource_contextClassLoaderNull() { |
| ClassLoader oldContextLoader = Thread.currentThread().getContextClassLoader(); |
| try { |
| Thread.currentThread().setContextClassLoader(null); |
| assertNotNull(Resources.getResource("com/google/common/io/testdata/i18n.txt")); |
| try { |
| Resources.getResource("no such resource"); |
| fail("Should get IllegalArgumentException"); |
| } catch (IllegalArgumentException expected) { |
| } |
| } finally { |
| Thread.currentThread().setContextClassLoader(oldContextLoader); |
| } |
| } |
| |
| public void testNulls() { |
| new NullPointerTester() |
| .setDefault(URL.class, classfile(ResourcesTest.class)) |
| .testAllPublicStaticMethods(Resources.class); |
| } |
| |
| private static URL classfile(Class<?> c) { |
| return c.getResource(c.getSimpleName() + ".class"); |
| } |
| } |