| /* |
| * 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.assertTimeout; |
| import static org.junit.jupiter.api.Assertions.assertTrue; |
| |
| import java.io.BufferedReader; |
| import java.io.File; |
| import java.io.FileReader; |
| import java.io.IOException; |
| import java.io.LineNumberReader; |
| import java.io.Reader; |
| import java.io.StringReader; |
| import java.nio.charset.StandardCharsets; |
| import java.nio.file.Files; |
| import java.nio.file.Path; |
| import java.time.Duration; |
| import java.util.Arrays; |
| import java.util.concurrent.atomic.AtomicBoolean; |
| |
| import org.apache.commons.io.FileUtils; |
| import org.junit.jupiter.api.Test; |
| |
| public class BoundedReaderTest { |
| private static final String STRING_END_NO_EOL = "0\n1\n2"; |
| |
| private static final String STRING_END_EOL = "0\n1\n2\n"; |
| |
| private final Reader sr = new BufferedReader(new StringReader("01234567890")); |
| |
| private final Reader shortReader = new BufferedReader(new StringReader("01")); |
| |
| @Test |
| public void readTillEnd() throws IOException { |
| try (final BoundedReader mr = new BoundedReader(sr, 3)) { |
| mr.read(); |
| mr.read(); |
| mr.read(); |
| assertEquals(-1, mr.read()); |
| } |
| } |
| |
| @Test |
| public void shortReader() throws IOException { |
| try (final BoundedReader mr = new BoundedReader(shortReader, 3)) { |
| mr.read(); |
| mr.read(); |
| assertEquals(-1, mr.read()); |
| } |
| } |
| |
| @Test |
| public void readMulti() throws IOException { |
| try (final BoundedReader mr = new BoundedReader(sr, 3)) { |
| final char[] cbuf = new char[4]; |
| Arrays.fill(cbuf, 'X'); |
| final int read = mr.read(cbuf, 0, 4); |
| assertEquals(3, read); |
| assertEquals('0', cbuf[0]); |
| assertEquals('1', cbuf[1]); |
| assertEquals('2', cbuf[2]); |
| assertEquals('X', cbuf[3]); |
| } |
| } |
| |
| @Test |
| public void readMultiWithOffset() throws IOException { |
| try (final BoundedReader mr = new BoundedReader(sr, 3)) { |
| final char[] cbuf = new char[4]; |
| Arrays.fill(cbuf, 'X'); |
| final int read = mr.read(cbuf, 1, 2); |
| assertEquals(2, read); |
| assertEquals('X', cbuf[0]); |
| assertEquals('0', cbuf[1]); |
| assertEquals('1', cbuf[2]); |
| assertEquals('X', cbuf[3]); |
| } |
| } |
| |
| @Test |
| public void markReset() throws IOException { |
| try (final BoundedReader mr = new BoundedReader(sr, 3)) { |
| mr.mark(3); |
| mr.read(); |
| mr.read(); |
| mr.read(); |
| mr.reset(); |
| mr.read(); |
| mr.read(); |
| mr.read(); |
| assertEquals(-1, mr.read()); |
| } |
| } |
| |
| @Test |
| public void markResetWithMarkOutsideBoundedReaderMax() throws IOException { |
| try (final BoundedReader mr = new BoundedReader(sr, 3)) { |
| mr.mark(4); |
| mr.read(); |
| mr.read(); |
| mr.read(); |
| assertEquals(-1, mr.read()); |
| } |
| } |
| |
| @Test |
| public void markResetWithMarkOutsideBoundedReaderMaxAndInitialOffset() throws IOException { |
| try (final BoundedReader mr = new BoundedReader(sr, 3)) { |
| mr.read(); |
| mr.mark(3); |
| mr.read(); |
| mr.read(); |
| assertEquals(-1, mr.read()); |
| } |
| } |
| |
| @Test |
| public void markResetFromOffset1() throws IOException { |
| try (final BoundedReader mr = new BoundedReader(sr, 3)) { |
| mr.mark(3); |
| mr.read(); |
| mr.read(); |
| mr.read(); |
| assertEquals(-1, mr.read()); |
| mr.reset(); |
| mr.mark(1); |
| mr.read(); |
| assertEquals(-1, mr.read()); |
| } |
| } |
| |
| @Test |
| public void markResetMarkMore() throws IOException { |
| try (final BoundedReader mr = new BoundedReader(sr, 3)) { |
| mr.mark(4); |
| mr.read(); |
| mr.read(); |
| mr.read(); |
| mr.reset(); |
| mr.read(); |
| mr.read(); |
| mr.read(); |
| assertEquals(-1, mr.read()); |
| } |
| } |
| |
| @Test |
| public void skipTest() throws IOException { |
| try (final BoundedReader mr = new BoundedReader(sr, 3)) { |
| mr.skip(2); |
| mr.read(); |
| assertEquals(-1, mr.read()); |
| } |
| } |
| |
| @Test |
| public void closeTest() throws IOException { |
| final AtomicBoolean closed = new AtomicBoolean(false); |
| try (final Reader sr = new BufferedReader(new StringReader("01234567890")) { |
| @Override |
| public void close() throws IOException { |
| closed.set(true); |
| super.close(); |
| } |
| }) { |
| |
| try (final BoundedReader mr = new BoundedReader(sr, 3)) { |
| // nothing |
| } |
| } |
| assertTrue(closed.get()); |
| } |
| |
| private void testLineNumberReader(final Reader source) throws IOException { |
| try (LineNumberReader reader = new LineNumberReader(new BoundedReader(source, 10_000_000))) { |
| while (reader.readLine() != null) { |
| // noop |
| } |
| } |
| } |
| |
| @Test |
| public void testLineNumberReaderAndStringReaderLastLineEolNo() { |
| assertTimeout(Duration.ofMillis(5000), () -> testLineNumberReader(new StringReader(STRING_END_NO_EOL))); |
| } |
| |
| @Test |
| public void testLineNumberReaderAndStringReaderLastLineEolYes() { |
| assertTimeout(Duration.ofMillis(5000), () -> testLineNumberReader(new StringReader(STRING_END_EOL))); |
| } |
| |
| @Test |
| public void testLineNumberReaderAndFileReaderLastLineEolNo() { |
| assertTimeout(Duration.ofMillis(5000), () -> testLineNumberReaderAndFileReaderLastLine(STRING_END_NO_EOL)); |
| } |
| |
| @Test |
| public void testLineNumberReaderAndFileReaderLastLineEolYes() { |
| assertTimeout(Duration.ofMillis(5000), () -> testLineNumberReaderAndFileReaderLastLine(STRING_END_EOL)); |
| } |
| |
| public void testLineNumberReaderAndFileReaderLastLine(final String data) throws IOException { |
| final Path path = Files.createTempFile(getClass().getSimpleName(), ".txt"); |
| try { |
| final File file = path.toFile(); |
| FileUtils.write(file, data, StandardCharsets.ISO_8859_1); |
| try (FileReader source = new FileReader(file)) { |
| testLineNumberReader(source); |
| } |
| } finally { |
| Files.delete(path); |
| } |
| } |
| |
| @Test |
| public void testReadBytesEOF() { |
| assertTimeout(Duration.ofMillis(5000), () -> { |
| final BoundedReader mr = new BoundedReader(sr, 3); |
| try (BufferedReader br = new BufferedReader(mr)) { |
| br.readLine(); |
| br.readLine(); |
| } |
| }); |
| } |
| } |