| /* |
| * 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.output; |
| |
| import static org.junit.jupiter.api.Assertions.assertFalse; |
| import static org.junit.jupiter.api.Assertions.assertThrows; |
| import static org.junit.jupiter.api.Assertions.assertTrue; |
| |
| import java.io.IOException; |
| import java.io.OutputStream; |
| import java.util.concurrent.atomic.AtomicBoolean; |
| |
| import org.junit.jupiter.api.Test; |
| |
| /** |
| * Tests {@link ThresholdingOutputStream}. |
| */ |
| public class ThresholdingOutputStreamTest { |
| |
| @Test |
| public void testThresholdLessThanZero() throws IOException { |
| try (final ThresholdingOutputStream out = new ThresholdingOutputStream(-1)) { |
| assertTrue(out.isThresholdExceeded()); |
| } |
| } |
| |
| @Test |
| public void testThresholdZero() throws IOException { |
| final AtomicBoolean reached = new AtomicBoolean(false); |
| try (final ThresholdingOutputStream out = new ThresholdingOutputStream(0) { |
| @Override |
| protected void thresholdReached() throws IOException { |
| reached.set(true); |
| } |
| }) { |
| assertFalse(out.isThresholdExceeded()); |
| out.write(89); |
| assertTrue(reached.get()); |
| assertTrue(out.isThresholdExceeded()); |
| } |
| } |
| |
| @Test |
| public void testSetByteCount_OutputStream() throws Exception { |
| final AtomicBoolean reached = new AtomicBoolean(false); |
| try (ThresholdingOutputStream tos = new ThresholdingOutputStream(3) { |
| { |
| setByteCount(2); |
| } |
| |
| @Override |
| protected OutputStream getOutputStream() throws IOException { |
| return new ByteArrayOutputStream(4); |
| } |
| |
| @Override |
| protected void thresholdReached() throws IOException { |
| reached.set(true); |
| } |
| }) { |
| tos.write('a'); |
| assertFalse(reached.get()); |
| tos.write('a'); |
| assertTrue(reached.get()); |
| } |
| } |
| |
| @Test |
| public void testSetByteCount_Stream() throws Exception { |
| final AtomicBoolean reached = new AtomicBoolean(false); |
| try (ThresholdingOutputStream tos = new ThresholdingOutputStream(3) { |
| { |
| setByteCount(2); |
| } |
| |
| @Override |
| protected OutputStream getStream() throws IOException { |
| return new ByteArrayOutputStream(4); |
| } |
| |
| @Override |
| protected void thresholdReached() throws IOException { |
| reached.set(true); |
| } |
| }) { |
| tos.write('a'); |
| assertFalse(reached.get()); |
| tos.write('a'); |
| assertTrue(reached.get()); |
| } |
| } |
| |
| @Test |
| public void testThresholdIOConsumer() throws Exception { |
| final AtomicBoolean reached = new AtomicBoolean(); |
| // Null threshold consumer |
| reached.set(false); |
| try (ThresholdingOutputStream tos = new ThresholdingOutputStream(1, null, |
| os -> new ByteArrayOutputStream(4))) { |
| tos.write('a'); |
| assertFalse(reached.get()); |
| tos.write('a'); |
| assertFalse(reached.get()); |
| } |
| // Null output stream function |
| reached.set(false); |
| try (ThresholdingOutputStream tos = new ThresholdingOutputStream(1, os -> reached.set(true), null)) { |
| tos.write('a'); |
| assertFalse(reached.get()); |
| tos.write('a'); |
| assertTrue(reached.get()); |
| } |
| // non-null inputs. |
| reached.set(false); |
| try (ThresholdingOutputStream tos = new ThresholdingOutputStream(1, os -> reached.set(true), |
| os -> new ByteArrayOutputStream(4))) { |
| tos.write('a'); |
| assertFalse(reached.get()); |
| tos.write('a'); |
| assertTrue(reached.get()); |
| } |
| } |
| |
| @Test |
| public void testThresholdIOConsumerIOException() throws Exception { |
| try (ThresholdingOutputStream tos = new ThresholdingOutputStream(1, os -> { |
| throw new IOException("Threshold reached."); |
| }, os -> new ByteArrayOutputStream(4))) { |
| tos.write('a'); |
| assertThrows(IOException.class, () -> tos.write('a')); |
| } |
| } |
| |
| @Test |
| public void testThresholdIOConsumerUncheckedException() throws Exception { |
| try (ThresholdingOutputStream tos = new ThresholdingOutputStream(1, os -> { |
| throw new IllegalStateException("Threshold reached."); |
| }, os -> new ByteArrayOutputStream(4))) { |
| tos.write('a'); |
| assertThrows(IllegalStateException.class, () -> tos.write('a')); |
| } |
| } |
| } |