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/*
* Copyright (C) 2012 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.io.SourceSinkFactory.ByteSinkFactory;
import static com.google.common.io.SourceSinkFactory.CharSinkFactory;
import static org.junit.Assert.assertArrayEquals;
import com.google.common.base.Charsets;
import com.google.common.collect.ImmutableList;
import junit.framework.TestSuite;
import java.io.BufferedOutputStream;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.lang.reflect.Method;
import java.util.Map;
/**
* A generator of {@code TestSuite} instances for testing {@code ByteSink} implementations.
* Generates tests of a all methods on a {@code ByteSink} given various inputs written to it as well
* as sub-suites for testing the {@code CharSink} view in the same way.
*
* @author Colin Decker
*/
public class ByteSinkTester extends SourceSinkTester<ByteSink, byte[], ByteSinkFactory> {
private static final ImmutableList<Method> testMethods
= getTestMethods(ByteSinkTester.class);
static TestSuite tests(String name, ByteSinkFactory factory) {
TestSuite suite = new TestSuite(name);
for (Map.Entry<String, String> entry : TEST_STRINGS.entrySet()) {
String desc = entry.getKey();
TestSuite stringSuite = suiteForString(name, factory, entry.getValue(), desc);
suite.addTest(stringSuite);
}
return suite;
}
private static TestSuite suiteForString(String name, ByteSinkFactory factory,
String string, String desc) {
byte[] bytes = string.getBytes(Charsets.UTF_8);
TestSuite suite = suiteForBytes(name, factory, desc, bytes);
CharSinkFactory charSinkFactory = SourceSinkFactories.asCharSinkFactory(factory);
suite.addTest(CharSinkTester.suiteForString(name + ".asCharSink[Charset]", charSinkFactory,
string, desc));
return suite;
}
private static TestSuite suiteForBytes(String name, ByteSinkFactory factory,
String desc, byte[] bytes) {
TestSuite suite = new TestSuite(name + " [" + desc + "]");
for (final Method method : testMethods) {
suite.addTest(new ByteSinkTester(factory, bytes, name, desc, method));
}
return suite;
}
private ByteSink sink;
ByteSinkTester(ByteSinkFactory factory, byte[] data, String suiteName,
String caseDesc, Method method) {
super(factory, data, suiteName, caseDesc, method);
}
@Override
protected void setUp() throws Exception {
sink = factory.createSink();
}
public void testOpenStream() throws IOException {
OutputStream out = sink.openStream();
try {
ByteStreams.copy(new ByteArrayInputStream(data), out);
} finally {
out.close();
}
assertContainsExpectedBytes();
}
public void testOpenBufferedStream() throws IOException {
BufferedOutputStream out = sink.openBufferedStream();
try {
ByteStreams.copy(new ByteArrayInputStream(data), out);
} finally {
out.close();
}
assertContainsExpectedBytes();
}
public void testWrite() throws IOException {
sink.write(data);
assertContainsExpectedBytes();
}
public void testWriteFrom_inputStream() throws IOException {
sink.writeFrom(new ByteArrayInputStream(data));
assertContainsExpectedBytes();
}
private void assertContainsExpectedBytes() throws IOException {
assertArrayEquals(expected, factory.getSinkContents());
}
}
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