| /* |
| * 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.assertSame; |
| |
| import java.io.BufferedInputStream; |
| import java.io.ByteArrayInputStream; |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.util.Arrays; |
| import org.junit.Before; |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| import org.junit.runners.JUnit4; |
| |
| /** Unit tests for {@link ExposedByteArrayInputStream}. */ |
| @RunWith(JUnit4.class) |
| public class StreamUtilsTest { |
| |
| private byte[] testData = null; |
| |
| @Before |
| public void setUp() { |
| testData = new byte[60 * 1024]; |
| Arrays.fill(testData, (byte) 32); |
| } |
| |
| @Test |
| public void testGetBytesFromExposedByteArrayInputStream() throws IOException { |
| InputStream stream = new ExposedByteArrayInputStream(testData); |
| byte[] bytes = StreamUtils.getBytesWithoutClosing(stream); |
| assertArrayEquals(testData, bytes); |
| assertSame(testData, bytes); |
| assertEquals(0, stream.available()); |
| } |
| |
| @Test |
| public void testGetBytesFromByteArrayInputStream() throws IOException { |
| InputStream stream = new ByteArrayInputStream(testData); |
| byte[] bytes = StreamUtils.getBytesWithoutClosing(stream); |
| assertArrayEquals(testData, bytes); |
| assertEquals(0, stream.available()); |
| } |
| |
| @Test |
| public void testGetBytesFromInputStream() throws IOException { |
| // Any stream which is not a ByteArrayInputStream. |
| InputStream stream = new BufferedInputStream(new ByteArrayInputStream(testData)); |
| byte[] bytes = StreamUtils.getBytesWithoutClosing(stream); |
| assertArrayEquals(testData, bytes); |
| assertEquals(0, stream.available()); |
| } |
| } |