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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.CharSinkFactory;
import com.google.common.base.Joiner;
import com.google.common.collect.ImmutableList;
import junit.framework.TestSuite;
import java.io.IOException;
import java.io.Writer;
import java.lang.reflect.Method;
import java.util.Map;
/**
* A generator of {@code TestSuite} instances for testing {@code CharSink} implementations.
* Generates tests of a all methods on a {@code CharSink} given various inputs written to it.
*
* @author Colin Decker
*/
public class CharSinkTester extends SourceSinkTester<CharSink, String, CharSinkFactory> {
private static final ImmutableList<Method> testMethods
= getTestMethods(CharSinkTester.class);
static TestSuite tests(String name, CharSinkFactory 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;
}
static TestSuite suiteForString(String name, CharSinkFactory factory,
String string, String desc) {
TestSuite stringSuite = new TestSuite(name + " [" + desc + "]");
for (final Method method : testMethods) {
stringSuite.addTest(new CharSinkTester(factory, string, name, desc, method));
}
return stringSuite;
}
private final ImmutableList<String> lines;
private final ImmutableList<String> expectedLines;
private CharSink sink;
public CharSinkTester(CharSinkFactory factory, String string,
String suiteName, String caseDesc, Method method) {
super(factory, string, suiteName, caseDesc, method);
this.lines = getLines(string);
this.expectedLines = getLines(expected);
}
@Override
protected void setUp() throws Exception {
this.sink = factory.createSink();
}
public void testOpenStream() throws IOException {
Writer writer = sink.openStream();
try {
writer.write(data);
} finally {
writer.close();
}
assertContainsExpectedString();
}
public void testOpenBufferedStream() throws IOException {
Writer writer = sink.openBufferedStream();
try {
writer.write(data);
} finally {
writer.close();
}
assertContainsExpectedString();
}
public void testWrite() throws IOException {
sink.write(data);
assertContainsExpectedString();
}
public void testWriteLines_systemDefaultSeparator() throws IOException {
String separator = System.getProperty("line.separator");
sink.writeLines(lines);
assertContainsExpectedLines(separator);
}
public void testWriteLines_specificSeparator() throws IOException {
String separator = "\r\n";
sink.writeLines(lines, separator);
assertContainsExpectedLines(separator);
}
private void assertContainsExpectedString() throws IOException {
assertEquals(expected, factory.getSinkContents());
}
private void assertContainsExpectedLines(String separator) throws IOException {
String expected = expectedLines.isEmpty()
? ""
: Joiner.on(separator).join(expectedLines);
if (!lines.isEmpty()) {
// if we wrote any lines in writeLines(), there will be a trailing newline
expected += separator;
}
assertEquals(expected, factory.getSinkContents());
}
}
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