| /* |
| * 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.commons.io.input; |
| |
| import java.io.ByteArrayInputStream; |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.util.UUID; |
| |
| import org.apache.commons.io.TaggedIOException; |
| |
| import junit.framework.TestCase; |
| |
| /** |
| * JUnit Test Case for {@link TaggedInputStream}. |
| */ |
| public class TaggedInputStreamTest extends TestCase { |
| |
| public void testEmptyStream() { |
| try { |
| InputStream stream = new TaggedInputStream(new ClosedInputStream()); |
| assertEquals(0, stream.available()); |
| assertEquals(-1, stream.read()); |
| assertEquals(-1, stream.read(new byte[1])); |
| assertEquals(-1, stream.read(new byte[1], 0, 1)); |
| stream.close(); |
| } catch (IOException e) { |
| fail("Unexpected exception thrown"); |
| } |
| } |
| |
| public void testNormalStream() { |
| try { |
| InputStream stream = new TaggedInputStream( |
| new ByteArrayInputStream(new byte[] { 'a', 'b', 'c' })); |
| assertEquals(3, stream.available()); |
| assertEquals('a', stream.read()); |
| byte[] buffer = new byte[1]; |
| assertEquals(1, stream.read(buffer)); |
| assertEquals('b', buffer[0]); |
| assertEquals(1, stream.read(buffer, 0, 1)); |
| assertEquals('c', buffer[0]); |
| assertEquals(-1, stream.read()); |
| stream.close(); |
| } catch (IOException e) { |
| fail("Unexpected exception thrown"); |
| } |
| } |
| |
| public void testBrokenStream() { |
| IOException exception = new IOException("test exception"); |
| TaggedInputStream stream = |
| new TaggedInputStream(new BrokenInputStream(exception)); |
| |
| // Test the available() method |
| try { |
| stream.available(); |
| fail("Expected exception not thrown."); |
| } catch (IOException e) { |
| assertTrue(stream.isCauseOf(e)); |
| try { |
| stream.throwIfCauseOf(e); |
| fail("Expected exception not thrown."); |
| } catch (IOException e2) { |
| assertEquals(exception, e2); |
| } |
| } |
| |
| // Test the read() method |
| try { |
| stream.read(); |
| fail("Expected exception not thrown."); |
| } catch (IOException e) { |
| assertTrue(stream.isCauseOf(e)); |
| try { |
| stream.throwIfCauseOf(e); |
| fail("Expected exception not thrown."); |
| } catch (IOException e2) { |
| assertEquals(exception, e2); |
| } |
| } |
| |
| // Test the close() method |
| try { |
| stream.close(); |
| fail("Expected exception not thrown."); |
| } catch (IOException e) { |
| assertTrue(stream.isCauseOf(e)); |
| try { |
| stream.throwIfCauseOf(e); |
| fail("Expected exception not thrown."); |
| } catch (IOException e2) { |
| assertEquals(exception, e2); |
| } |
| } |
| } |
| |
| public void testOtherException() { |
| IOException exception = new IOException("test exception"); |
| InputStream closed = new ClosedInputStream(); |
| TaggedInputStream stream = new TaggedInputStream(closed); |
| |
| assertFalse(stream.isCauseOf(exception)); |
| assertFalse(stream.isCauseOf( |
| new TaggedIOException(exception, UUID.randomUUID()))); |
| |
| try { |
| stream.throwIfCauseOf(exception); |
| } catch (IOException e) { |
| fail("Unexpected exception thrown"); |
| } |
| |
| try { |
| stream.throwIfCauseOf( |
| new TaggedIOException(exception, UUID.randomUUID())); |
| } catch (IOException e) { |
| fail("Unexpected exception thrown"); |
| } |
| } |
| |
| } |