119 lines
3.8 KiB
Java
119 lines
3.8 KiB
Java
/*
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* Copyright (C) 2012 The Guava Authors
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.google.common.io;
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import static com.google.common.io.TestOption.CLOSE_THROWS;
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import static com.google.common.io.TestOption.OPEN_THROWS;
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import static com.google.common.io.TestOption.READ_THROWS;
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import static com.google.common.io.TestOption.WRITE_THROWS;
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import static org.junit.Assert.assertArrayEquals;
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import java.io.ByteArrayInputStream;
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import java.io.IOException;
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import java.io.OutputStream;
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import java.util.EnumSet;
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/**
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* Tests for the default implementations of {@code ByteSink} methods.
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*
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* @author Colin Decker
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*/
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public class ByteSinkTest extends IoTestCase {
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private final byte[] bytes = newPreFilledByteArray(10000);
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private TestByteSink sink;
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@Override
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protected void setUp() throws Exception {
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sink = new TestByteSink();
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}
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public void testOpenBufferedStream() throws IOException {
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OutputStream out = sink.openBufferedStream();
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assertTrue(sink.wasStreamOpened());
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assertFalse(sink.wasStreamClosed());
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out.write(new byte[] {1, 2, 3, 4});
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out.close();
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assertTrue(sink.wasStreamClosed());
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assertArrayEquals(new byte[] {1, 2, 3, 4}, sink.getBytes());
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}
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public void testWrite_bytes() throws IOException {
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assertArrayEquals(new byte[0], sink.getBytes());
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sink.write(bytes);
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assertTrue(sink.wasStreamOpened() && sink.wasStreamClosed());
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assertArrayEquals(bytes, sink.getBytes());
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}
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public void testWriteFrom_inputStream() throws IOException {
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ByteArrayInputStream in = new ByteArrayInputStream(bytes);
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sink.writeFrom(in);
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assertTrue(sink.wasStreamOpened() && sink.wasStreamClosed());
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assertArrayEquals(bytes, sink.getBytes());
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}
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public void testWriteFromStream_doesNotCloseThatStream() throws IOException {
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TestInputStream in = new TestInputStream(new ByteArrayInputStream(new byte[10]));
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assertFalse(in.closed());
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sink.writeFrom(in);
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assertFalse(in.closed());
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}
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public void testClosesOnErrors_copyingFromByteSourceThatThrows() {
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for (TestOption option : EnumSet.of(OPEN_THROWS, READ_THROWS, CLOSE_THROWS)) {
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TestByteSource failSource = new TestByteSource(new byte[10], option);
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TestByteSink okSink = new TestByteSink();
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try {
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failSource.copyTo(okSink);
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fail();
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} catch (IOException expected) {
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}
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// ensure stream was closed IF it was opened (depends on implementation whether or not it's
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// opened at all if source.newInputStream() throws).
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assertTrue(
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"stream not closed when copying from source with option: " + option,
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!okSink.wasStreamOpened() || okSink.wasStreamClosed());
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}
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}
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public void testClosesOnErrors_whenWriteThrows() {
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TestByteSink failSink = new TestByteSink(WRITE_THROWS);
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try {
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new TestByteSource(new byte[10]).copyTo(failSink);
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fail();
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} catch (IOException expected) {
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}
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assertTrue(failSink.wasStreamClosed());
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}
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public void testClosesOnErrors_writingFromInputStreamThatThrows() {
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TestByteSink okSink = new TestByteSink();
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try {
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TestInputStream in = new TestInputStream(new ByteArrayInputStream(new byte[10]), READ_THROWS);
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okSink.writeFrom(in);
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fail();
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} catch (IOException expected) {
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}
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assertTrue(okSink.wasStreamClosed());
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}
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}
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