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/*
* 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 static org.junit.jupiter.api.Assertions.assertFalse;
import static org.junit.jupiter.api.Assertions.assertNotNull;
import static org.junit.jupiter.api.Assertions.assertNull;
import static org.junit.jupiter.api.Assertions.assertTrue;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.time.Duration;
import java.time.Instant;
import org.apache.commons.io.IOUtils;
import org.apache.commons.io.ThreadUtils;
import org.junit.jupiter.api.Test;
/**
* Tests {@link TimestampedObserver}.
*/
public class TimestampedObserverTest {
@Test
public void test() throws IOException, InterruptedException {
final Instant before = Instant.now();
// Some OS' clock granularity may be high.
ThreadUtils.sleep(Duration.ofMillis(20));
final TimestampedObserver timestampedObserver = new TimestampedObserver();
assertFalse(timestampedObserver.isClosed());
// Java 8 instant resolution is not great.
ThreadUtils.sleep(Duration.ofMillis(20));
// toString() should not blow up before close().
assertNotNull(timestampedObserver.toString());
assertTrue(timestampedObserver.getOpenInstant().isAfter(before));
assertTrue(timestampedObserver.getOpenToNowDuration().toNanos() > 0);
assertNull(timestampedObserver.getCloseInstant());
assertFalse(timestampedObserver.isClosed());
final byte[] buffer = MessageDigestCalculatingInputStreamTest.generateRandomByteStream(IOUtils.DEFAULT_BUFFER_SIZE);
try (ObservableInputStream ois = new ObservableInputStream(new ByteArrayInputStream(buffer), timestampedObserver)) {
assertTrue(timestampedObserver.getOpenInstant().isAfter(before));
assertTrue(timestampedObserver.getOpenToNowDuration().toNanos() > 0);
assertFalse(timestampedObserver.isClosed());
}
assertTrue(timestampedObserver.isClosed());
assertTrue(timestampedObserver.getOpenInstant().isAfter(before));
assertTrue(timestampedObserver.getOpenToNowDuration().toNanos() > 0);
assertTrue(timestampedObserver.getCloseInstant().isAfter(timestampedObserver.getOpenInstant()));
assertTrue(timestampedObserver.getOpenToCloseDuration().toNanos() > 0);
assertNotNull(timestampedObserver.toString());
}
@Test
public void testExample() throws IOException {
final TimestampedObserver timestampedObserver = new TimestampedObserver();
final byte[] buffer = MessageDigestCalculatingInputStreamTest
.generateRandomByteStream(IOUtils.DEFAULT_BUFFER_SIZE);
try (ObservableInputStream ois = new ObservableInputStream(new ByteArrayInputStream(buffer),
timestampedObserver)) {
//
}
// System.out.printf("IO duration: %s%n", timestampedObserver);
// System.out.printf("IO duration: %s%n", timestampedObserver.getOpenToCloseDuration());
}
}
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