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/**
* Copyright (c) 2008, SnakeYAML
*
* Licensed 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.yaml.snakeyaml.reader;
import java.io.ByteArrayInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.Reader;
import java.io.StringReader;
import java.nio.charset.Charset;
import java.nio.charset.StandardCharsets;
import junit.framework.TestCase;
public class ReaderBomTest extends TestCase {
public void testReader() {
Reader input = new StringReader("test");
StreamReader reader = new StreamReader(input);
assertEquals('t', reader.peek());
reader.forward(1);
assertEquals('e', reader.peek());
reader.forward(1);
assertEquals('s', reader.peek());
reader.forward(1);
assertEquals('t', reader.peek());
reader.forward(1);
assertEquals('\u0000', reader.peek());
}
public void testNoBom() throws IOException {
byte[] data = "test".getBytes(StandardCharsets.UTF_8);
ByteArrayInputStream input = new ByteArrayInputStream(data);
UnicodeReader r = new UnicodeReader(input);
StreamReader reader = new StreamReader(r);
assertEquals('t', reader.peek());
assertEquals(StandardCharsets.UTF_8, Charset.forName(r.getEncoding()));
reader.forward(1);
assertEquals('e', reader.peek());
reader.forward(1);
assertEquals('s', reader.peek());
reader.forward(1);
assertEquals('t', reader.peek());
reader.forward(1);
assertEquals('\u0000', reader.peek());
r.close();
}
public void testUtf8Bom() throws IOException {
File file = new File("src/test/resources/reader/utf-8.txt");
assertTrue("Test file not found: " + file.getAbsolutePath(), file.exists());
InputStream input = new FileInputStream(file);
UnicodeReader unicodeReader = new UnicodeReader(input);
StreamReader reader = new StreamReader(unicodeReader);
assertEquals('t', reader.peek());
reader.forward(1);
assertEquals('e', reader.peek());
reader.forward(1);
assertEquals('s', reader.peek());
reader.forward(1);
assertEquals('t', reader.peek());
reader.forward(1);
assertEquals('\u0000', reader.peek());
assertEquals(StandardCharsets.UTF_8, Charset.forName(unicodeReader.getEncoding()));
input.close();
}
public void testUnicodeLeBom() throws IOException {
File file = new File("src/test/resources/reader/unicode-16le.txt");
assertTrue("Test file not found: " + file.getAbsolutePath(), file.exists());
InputStream input = new FileInputStream(file);
UnicodeReader unicodeReader = new UnicodeReader(input);
StreamReader reader = new StreamReader(unicodeReader);
assertEquals('t', reader.peek());
reader.forward(1);
assertEquals('e', reader.peek());
reader.forward(1);
assertEquals('s', reader.peek());
reader.forward(1);
assertEquals('t', reader.peek());
reader.forward(1);
assertEquals('\u0000', reader.peek());
assertEquals(StandardCharsets.UTF_16LE, Charset.forName(unicodeReader.getEncoding()));
input.close();
}
public void testUnicodeBeBom() throws IOException {
File file = new File("src/test/resources/reader/unicode-16be.txt");
assertTrue("Test file not found: " + file.getAbsolutePath(), file.exists());
InputStream input = new FileInputStream(file);
UnicodeReader unicodeReader = new UnicodeReader(input);
StreamReader reader = new StreamReader(unicodeReader);
assertEquals('t', reader.peek());
reader.forward(1);
assertEquals('e', reader.peek());
reader.forward(1);
assertEquals('s', reader.peek());
reader.forward(1);
assertEquals('t', reader.peek());
reader.forward(1);
assertEquals('\u0000', reader.peek());
assertEquals(StandardCharsets.UTF_16BE, Charset.forName(unicodeReader.getEncoding()));
input.close();
}
}
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