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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.assertEquals;
import static org.junit.jupiter.api.Assertions.assertFalse;
import static org.junit.jupiter.api.Assertions.assertTrue;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.Test;
/**
* JUnit Test Case for {@link AutoCloseInputStream}.
*/
public class AutoCloseInputStreamTest {
private byte[] data;
private AutoCloseInputStream stream;
private boolean closed;
@BeforeEach
public void setUp() {
data = new byte[] {'x', 'y', 'z'};
stream = new AutoCloseInputStream(new ByteArrayInputStream(data) {
@Override
public void close() {
closed = true;
}
});
closed = false;
}
@Test
public void testClose() throws IOException {
stream.close();
assertTrue(closed, "closed");
assertEquals(-1, stream.read(), "read()");
}
@Test
public void testFinalize() throws Throwable {
stream.finalize();
assertTrue(closed, "closed");
assertEquals(-1, stream.read(), "read()");
}
@Test
public void testRead() throws IOException {
for (final byte element : data) {
assertEquals(element, stream.read(), "read()");
assertFalse(closed, "closed");
}
assertEquals(-1, stream.read(), "read()");
assertTrue(closed, "closed");
}
@Test
public void testReadBuffer() throws IOException {
final byte[] b = new byte[data.length * 2];
int total = 0;
for (int n = 0; n != -1; n = stream.read(b)) {
assertFalse(closed, "closed");
for (int i = 0; i < n; i++) {
assertEquals(data[total + i], b[i], "read(b)");
}
total += n;
}
assertEquals(data.length, total, "read(b)");
assertTrue(closed, "closed");
assertEquals(-1, stream.read(b), "read(b)");
}
@Test
public void testReadBufferOffsetLength() throws IOException {
final byte[] b = new byte[data.length * 2];
int total = 0;
for (int n = 0; n != -1; n = stream.read(b, total, b.length - total)) {
assertFalse(closed, "closed");
total += n;
}
assertEquals(data.length, total, "read(b, off, len)");
for (int i = 0; i < data.length; i++) {
assertEquals(data[i], b[i], "read(b, off, len)");
}
assertTrue(closed, "closed");
assertEquals(-1, stream.read(b, 0, b.length), "read(b, off, len)");
}
@Test
public void testResetBeforeEnd() throws IOException {
final String inputStr = "1234";
final AutoCloseInputStream inputStream = new AutoCloseInputStream(new ByteArrayInputStream(inputStr.getBytes()));
inputStream.mark(1);
assertEquals('1', inputStream.read());
inputStream.reset();
assertEquals('1', inputStream.read());
assertEquals('2', inputStream.read());
inputStream.reset();
assertEquals('1', inputStream.read());
assertEquals('2', inputStream.read());
assertEquals('3', inputStream.read());
inputStream.reset();
assertEquals('1', inputStream.read());
assertEquals('2', inputStream.read());
assertEquals('3', inputStream.read());
assertEquals('4', inputStream.read());
inputStream.reset();
assertEquals('1', inputStream.read());
}
}
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