| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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 org.apache.beam.sdk.util; |
| |
| import static org.junit.Assert.assertArrayEquals; |
| import static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.assertNotSame; |
| import static org.junit.Assert.assertSame; |
| |
| import java.io.ByteArrayOutputStream; |
| import java.io.IOException; |
| import org.apache.beam.vendor.guava.v26_0_jre.com.google.common.base.Charsets; |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| import org.junit.runners.JUnit4; |
| |
| /** Unit tests for {@link ExposedByteArrayOutputStream}. */ |
| @RunWith(JUnit4.class) |
| public class ExposedByteArrayOutputStreamTest { |
| |
| private static final byte[] TEST_DATA = "Hello World!".getBytes(Charsets.UTF_8); |
| |
| private ExposedByteArrayOutputStream exposedStream = new ExposedByteArrayOutputStream(); |
| private ByteArrayOutputStream stream = new ByteArrayOutputStream(); |
| |
| @Test |
| public void testNoWrite() { |
| assertStreamContentsEquals(stream, exposedStream); |
| } |
| |
| @Test |
| public void testWriteZeroLengthArray() throws IOException { |
| writeToBoth(new byte[0]); |
| assertStreamContentsEquals(stream, exposedStream); |
| } |
| |
| @Test |
| public void testWriteZeroLengthArrayWithOffset() { |
| writeToBoth(new byte[0], 0, 0); |
| assertStreamContentsEquals(stream, exposedStream); |
| } |
| |
| @Test |
| public void testWriteSingleByte() { |
| writeToBoth(32); |
| assertStreamContentsEquals(stream, exposedStream); |
| } |
| |
| @Test |
| public void testWriteSingleByteTwice() { |
| writeToBoth(32); |
| writeToBoth(32); |
| assertStreamContentsEquals(stream, exposedStream); |
| } |
| |
| @Test |
| public void testWriteSingleArray() throws IOException { |
| writeToBoth(TEST_DATA); |
| assertStreamContentsEquals(stream, exposedStream); |
| assertNotSame(TEST_DATA, exposedStream.toByteArray()); |
| } |
| |
| @Test |
| public void testWriteSingleArrayFast() throws IOException { |
| writeToBothFast(TEST_DATA); |
| assertStreamContentsEquals(stream, exposedStream); |
| assertSame(TEST_DATA, exposedStream.toByteArray()); |
| } |
| |
| @Test |
| public void testWriteSingleArrayTwice() throws IOException { |
| writeToBoth(TEST_DATA); |
| writeToBoth(TEST_DATA); |
| assertStreamContentsEquals(stream, exposedStream); |
| } |
| |
| @Test |
| public void testWriteSingleArrayTwiceFast() throws IOException { |
| writeToBothFast(TEST_DATA); |
| writeToBothFast(TEST_DATA); |
| assertStreamContentsEquals(stream, exposedStream); |
| } |
| |
| @Test |
| public void testWriteSingleArrayTwiceFast1() throws IOException { |
| writeToBothFast(TEST_DATA); |
| writeToBoth(TEST_DATA); |
| assertStreamContentsEquals(stream, exposedStream); |
| } |
| |
| @Test |
| public void testWriteSingleArrayTwiceFast2() throws IOException { |
| writeToBoth(TEST_DATA); |
| writeToBothFast(TEST_DATA); |
| assertStreamContentsEquals(stream, exposedStream); |
| } |
| |
| @Test |
| public void testWriteSingleArrayWithLength() { |
| writeToBoth(TEST_DATA, 0, TEST_DATA.length); |
| assertStreamContentsEquals(stream, exposedStream); |
| assertNotSame(TEST_DATA, exposedStream.toByteArray()); |
| } |
| |
| @Test |
| public void testWritePartial() { |
| writeToBoth(TEST_DATA, 0, TEST_DATA.length - 1); |
| assertStreamContentsEquals(stream, exposedStream); |
| } |
| |
| @Test |
| public void testWritePartialWithNonZeroBegin() { |
| writeToBoth(TEST_DATA, 1, TEST_DATA.length - 1); |
| assertStreamContentsEquals(stream, exposedStream); |
| } |
| |
| @Test |
| public void testWriteByteAfterWriteArrayFast() throws IOException { |
| writeToBothFast(TEST_DATA); |
| writeToBoth(32); |
| assertStreamContentsEquals(stream, exposedStream); |
| } |
| |
| @Test |
| public void testWriteArrayFastAfterByte() throws IOException { |
| writeToBoth(32); |
| writeToBothFast(TEST_DATA); |
| assertStreamContentsEquals(stream, exposedStream); |
| } |
| |
| @Test |
| public void testResetAfterWriteFast() throws IOException { |
| writeToBothFast(TEST_DATA); |
| resetBoth(); |
| assertStreamContentsEquals(stream, exposedStream); |
| } |
| |
| @Test |
| public void testWriteArrayFastAfterReset() throws IOException { |
| writeToBothFast(TEST_DATA); |
| resetBoth(); |
| writeToBothFast(TEST_DATA); |
| assertStreamContentsEquals(stream, exposedStream); |
| assertSame(TEST_DATA, exposedStream.toByteArray()); |
| } |
| |
| @Test |
| public void testWriteArrayFastAfterReset1() throws IOException { |
| writeToBothFast(TEST_DATA); |
| writeToBothFast(TEST_DATA); |
| resetBoth(); |
| writeToBothFast(TEST_DATA); |
| assertStreamContentsEquals(stream, exposedStream); |
| assertSame(TEST_DATA, exposedStream.toByteArray()); |
| } |
| |
| @Test |
| public void testWriteArrayFastAfterReset2() throws IOException { |
| resetBoth(); |
| writeToBothFast(TEST_DATA); |
| assertStreamContentsEquals(stream, exposedStream); |
| assertSame(TEST_DATA, exposedStream.toByteArray()); |
| } |
| |
| @Test |
| public void testWriteArrayFastTwiceAfterReset() throws IOException { |
| writeToBothFast(TEST_DATA); |
| resetBoth(); |
| writeToBothFast(TEST_DATA); |
| writeToBothFast(TEST_DATA); |
| assertStreamContentsEquals(stream, exposedStream); |
| } |
| |
| @Test |
| public void testWriteArrayFastTwiceAfterReset1() throws IOException { |
| writeToBothFast(TEST_DATA); |
| writeToBothFast(TEST_DATA); |
| resetBoth(); |
| writeToBothFast(TEST_DATA); |
| writeToBothFast(TEST_DATA); |
| assertStreamContentsEquals(stream, exposedStream); |
| } |
| |
| @Test |
| public void testWriteByteAfterReset() { |
| writeToBoth(32); |
| resetBoth(); |
| writeToBoth(32); |
| assertStreamContentsEquals(stream, exposedStream); |
| } |
| |
| @Test |
| public void testWriteByteAfterReset1() { |
| resetBoth(); |
| writeToBoth(32); |
| assertStreamContentsEquals(stream, exposedStream); |
| } |
| |
| private void assertStreamContentsEquals( |
| ByteArrayOutputStream stream1, ByteArrayOutputStream stream2) { |
| assertArrayEquals(stream1.toByteArray(), stream2.toByteArray()); |
| assertEquals(stream1.toString(), stream2.toString()); |
| assertEquals(stream1.size(), stream2.size()); |
| } |
| |
| private void writeToBoth(int b) { |
| exposedStream.write(b); |
| stream.write(b); |
| } |
| |
| private void writeToBoth(byte[] b) throws IOException { |
| exposedStream.write(b); |
| stream.write(b); |
| } |
| |
| private void writeToBothFast(byte[] b) throws IOException { |
| exposedStream.writeAndOwn(b); |
| stream.write(b); |
| } |
| |
| private void writeToBoth(byte[] b, int off, int length) { |
| exposedStream.write(b, off, length); |
| stream.write(b, off, length); |
| } |
| |
| private void resetBoth() { |
| exposedStream.reset(); |
| stream.reset(); |
| } |
| } |