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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.base.Preconditions.checkNotNull;
import static com.google.common.io.TestOption.CLOSE_THROWS;
import static com.google.common.io.TestOption.OPEN_THROWS;
import static com.google.common.io.TestOption.WRITE_THROWS;
import com.google.common.collect.ImmutableSet;
import java.io.FilterOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.util.Arrays;
/**
* @author Colin Decker
*/
public class TestOutputStream extends FilterOutputStream {
private final ImmutableSet<TestOption> options;
private boolean closed;
public TestOutputStream(OutputStream out, TestOption... options) throws IOException {
this(out, Arrays.asList(options));
}
public TestOutputStream(OutputStream out, Iterable<TestOption> options) throws IOException {
super(checkNotNull(out));
this.options = ImmutableSet.copyOf(options);
throwIf(OPEN_THROWS);
}
public boolean closed() {
return closed;
}
@Override
public void write(byte[] b, int off, int len) throws IOException {
throwIf(closed);
throwIf(WRITE_THROWS);
super.write(b, off, len);
}
@Override
public void write(int b) throws IOException {
throwIf(closed);
throwIf(WRITE_THROWS);
super.write(b);
}
@Override
public void close() throws IOException {
closed = true;
super.close();
throwIf(CLOSE_THROWS);
}
private void throwIf(TestOption option) throws IOException {
throwIf(options.contains(option));
}
private static void throwIf(boolean condition) throws IOException {
if (condition) {
throw new IOException();
}
}
}
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