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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.assertThrows;
import static org.junit.jupiter.api.Assertions.assertTrue;
import java.io.IOException;
import java.io.StringReader;
import java.io.UncheckedIOException;
import java.nio.CharBuffer;
import org.apache.commons.io.IOUtils;
import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.Test;
/**
* Tests {@link UncheckedFilterReader}.
*/
public class UncheckedBufferedReaderTest {
private UncheckedBufferedReader ucStringReader;
private UncheckedBufferedReader ucBrokenReader;
private IOException exception = new IOException("test exception");
@SuppressWarnings("resource")
@BeforeEach
public void beforeEach() {
ucStringReader = UncheckedBufferedReader.on(new StringReader("01"));
exception = new IOException("test exception");
ucBrokenReader = UncheckedBufferedReader.on(new BrokenReader(exception));
}
@Test
public void testBufferSize() {
try (UncheckedBufferedReader uncheckedReader = new UncheckedBufferedReader(new StringReader("0123456789"), 2)) {
assertEquals('0', uncheckedReader.read());
}
}
@Test
public void testClose() {
ucStringReader.close();
assertThrows(UncheckedIOException.class, () -> ucBrokenReader.read());
}
@Test
public void testCloseThrows() {
assertEquals(exception, assertThrows(UncheckedIOException.class, () -> ucBrokenReader.close()).getCause());
}
@Test
public void testMarkReset() {
ucStringReader.mark(10);
final int c = ucStringReader.read();
ucStringReader.reset();
assertEquals(c, ucStringReader.read());
}
@Test
public void testMarkThrows() {
try (UncheckedBufferedReader closedReader = UncheckedBufferedReader.on(ClosedReader.INSTANCE)) {
closedReader.close();
assertThrows(UncheckedIOException.class, () -> closedReader.mark(1));
}
}
@Test
public void testRead() {
try (UncheckedBufferedReader uncheckedReader = UncheckedBufferedReader.on(ucStringReader)) {
assertEquals('0', uncheckedReader.read());
assertEquals('1', uncheckedReader.read());
assertEquals(IOUtils.EOF, uncheckedReader.read());
assertEquals(IOUtils.EOF, uncheckedReader.read());
}
}
@Test
public void testReadCharArray() {
try (UncheckedBufferedReader uncheckedReader = UncheckedBufferedReader.on(ucStringReader)) {
final char[] array = new char[1];
assertEquals(1, uncheckedReader.read(array));
assertEquals('0', array[0]);
array[0] = 0;
assertEquals(1, uncheckedReader.read(array));
assertEquals('1', array[0]);
array[0] = 0;
assertEquals(IOUtils.EOF, uncheckedReader.read(array));
assertEquals(0, array[0]);
assertEquals(IOUtils.EOF, uncheckedReader.read(array));
assertEquals(0, array[0]);
}
}
@Test
public void testReadCharArrayIndexed() {
try (UncheckedBufferedReader uncheckedReader = UncheckedBufferedReader.on(ucStringReader)) {
final char[] array = new char[1];
assertEquals(1, uncheckedReader.read(array, 0, 1));
assertEquals('0', array[0]);
array[0] = 0;
assertEquals(1, uncheckedReader.read(array, 0, 1));
assertEquals('1', array[0]);
array[0] = 0;
assertEquals(IOUtils.EOF, uncheckedReader.read(array, 0, 1));
assertEquals(0, array[0]);
assertEquals(IOUtils.EOF, uncheckedReader.read(array, 0, 1));
assertEquals(0, array[0]);
}
}
@Test
public void testReadCharArrayIndexedThrows() {
assertEquals(exception, assertThrows(UncheckedIOException.class, () -> ucBrokenReader.read(new char[1], 0, 1)).getCause());
}
@Test
public void testReadCharArrayThrows() {
assertEquals(exception, assertThrows(UncheckedIOException.class, () -> ucBrokenReader.read(new char[1])).getCause());
}
@Test
public void testReadCharBuffer() {
try (UncheckedBufferedReader uncheckedReader = UncheckedBufferedReader.on(ucStringReader)) {
final CharBuffer buffer = CharBuffer.wrap(new char[1]);
assertEquals(1, uncheckedReader.read(buffer));
buffer.flip();
assertEquals('0', buffer.charAt(0));
buffer.put(0, (char) 0);
assertEquals(1, uncheckedReader.read(buffer));
buffer.flip();
assertEquals('1', buffer.charAt(0));
buffer.put(0, (char) 0);
assertEquals(IOUtils.EOF, uncheckedReader.read(buffer));
buffer.flip();
assertEquals(0, buffer.length());
assertEquals(0, uncheckedReader.read(buffer));
buffer.flip();
assertEquals(0, buffer.length());
}
}
@Test
public void testReadCharBufferThrows() {
assertEquals(exception, assertThrows(UncheckedIOException.class, () -> ucBrokenReader.read(CharBuffer.wrap(new char[1]))).getCause());
}
@Test
public void testReadLine() {
try (UncheckedBufferedReader uncheckedReader = UncheckedBufferedReader.on(ucStringReader)) {
assertEquals("01", uncheckedReader.readLine());
assertEquals(IOUtils.EOF, uncheckedReader.read());
assertEquals(IOUtils.EOF, uncheckedReader.read());
}
}
@Test
public void testReadLineThrows() {
assertEquals(exception, assertThrows(UncheckedIOException.class, () -> ucBrokenReader.readLine()).getCause());
}
@Test
public void testReadThrows() {
assertEquals(exception, assertThrows(UncheckedIOException.class, () -> ucBrokenReader.read()).getCause());
}
@Test
public void testReady() {
assertTrue(ucStringReader.ready());
}
@Test
public void testReadyThrows() {
assertEquals(exception, assertThrows(UncheckedIOException.class, () -> ucBrokenReader.ready()).getCause());
}
@Test
public void testResetThrows() {
try (UncheckedBufferedReader closedReader = UncheckedBufferedReader.on(ClosedReader.INSTANCE)) {
closedReader.close();
assertThrows(UncheckedIOException.class, () -> ucBrokenReader.reset());
}
}
@Test
public void testSkip() {
assertEquals(1, ucStringReader.skip(1));
}
@Test
public void testSkipThrows() {
assertEquals(exception, assertThrows(UncheckedIOException.class, () -> ucBrokenReader.skip(1)).getCause());
}
}
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