| /* |
| * |
| * 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.qpid.server.streams; |
| |
| import static org.junit.Assert.assertArrayEquals; |
| import static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.fail; |
| import static org.mockito.Mockito.mock; |
| import static org.mockito.Mockito.verify; |
| import static org.mockito.Mockito.when; |
| |
| import java.io.ByteArrayInputStream; |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.util.Arrays; |
| |
| import org.junit.Test; |
| |
| import org.apache.qpid.test.utils.UnitTestBase; |
| |
| public class CompositeInputStreamTest extends UnitTestBase |
| { |
| |
| @Test |
| public void testReadByteByByte_MultipleStreams() throws Exception |
| { |
| InputStream bis1 = new ByteArrayInputStream("ab".getBytes()); |
| InputStream bis2 = new ByteArrayInputStream("cd".getBytes()); |
| |
| CompositeInputStream cis = new CompositeInputStream(Arrays.asList(bis1, bis2)); |
| |
| assertEquals("1st read byte unexpected", 'a', cis.read()); |
| assertEquals("2nd read byte unexpected", 'b', cis.read()); |
| assertEquals("3rd read byte unexpected", 'c', cis.read()); |
| assertEquals("4th read byte unexpected", 'd', cis.read()); |
| |
| assertEquals("Expecting EOF", -1, cis.read()); |
| } |
| |
| @Test |
| public void testReadByteArray_MultipleStreams() throws Exception |
| { |
| InputStream bis1 = new ByteArrayInputStream("ab".getBytes()); |
| InputStream bis2 = new ByteArrayInputStream("cd".getBytes()); |
| |
| CompositeInputStream cis = new CompositeInputStream(Arrays.asList(bis1, bis2)); |
| |
| byte[] buf = new byte[3]; |
| |
| int read1 = cis.read(buf); |
| assertEquals("Unexpected return value from 1st array read", 3, read1); |
| assertArrayEquals("Unexpected bytes from 1st array read", "abc".getBytes(), buf); |
| |
| int read2 = cis.read(buf); |
| assertEquals("Unexpected return value from 2nd array read", 1, read2); |
| assertArrayEquals("Unexpected bytes from 1st array read", "d".getBytes(), Arrays.copyOf(buf, 1)); |
| |
| int read3 = cis.read(buf); |
| assertEquals("Expecting EOF", -1, read3); |
| } |
| |
| @Test |
| public void testReadsMixed_SingleStream() throws Exception |
| { |
| InputStream bis = new ByteArrayInputStream("abcd".getBytes()); |
| |
| CompositeInputStream cis = new CompositeInputStream(Arrays.asList(bis)); |
| |
| byte[] buf = new byte[3]; |
| |
| int read1 = cis.read(buf); |
| assertEquals("Unexpected return value from 1st array read", 3, read1); |
| assertArrayEquals("Unexpected bytes from 1st array read", "abc".getBytes(), buf); |
| |
| assertEquals("1st read byte unexpected", 'd', cis.read()); |
| |
| assertEquals("Expecting EOF", -1, cis.read(buf)); |
| } |
| |
| @Test |
| public void testAvailable_MultipleStreams() throws Exception |
| { |
| InputStream bis1 = new ByteArrayInputStream("ab".getBytes()); |
| InputStream bis2 = new ByteArrayInputStream("cd".getBytes()); |
| |
| CompositeInputStream cis = new CompositeInputStream(Arrays.asList(bis1, bis2)); |
| |
| assertEquals("Unexpected number of available bytes before read", 4, cis.available()); |
| cis.read(); |
| assertEquals("Unexpected number of available bytes after 1st read", 3, cis.available()); |
| cis.read(); |
| cis.read(); |
| assertEquals("Unexpected number of available bytes after 3rd read", 1, cis.available()); |
| cis.read(); |
| assertEquals("Unexpected number of available bytes after last byte read", 0, cis.available()); |
| } |
| |
| @Test |
| public void testClose() throws Exception |
| { |
| InputStream bis1 = mock(InputStream.class); |
| InputStream bis2 = mock(InputStream.class); |
| |
| CompositeInputStream cis = new CompositeInputStream(Arrays.asList(bis1, bis2)); |
| |
| cis.close(); |
| verify(bis1).close(); |
| verify(bis1).close(); |
| when(bis1.read()).thenThrow(new IOException("mocked stream closed")); |
| |
| try |
| { |
| cis.read(); |
| fail("Excetion not thrown"); |
| } |
| catch(IOException ioe) |
| { |
| // PASS |
| } |
| } |
| |
| } |