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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.StringReader;
import junit.framework.TestCase;
public class ReaderStringTest extends TestCase {
public void testCheckPrintable() {
StreamReader reader = new StreamReader("test");
assertEquals('\0', reader.peek(4));
assertTrue(StreamReader.isPrintable("test"));
}
public void testCheckNonPrintable() {
assertFalse(StreamReader.isPrintable("test\u0005 fail"));
try {
StreamReader reader = new StreamReader("test\u0005 fail");
while (reader.peek() != '\0') {
reader.forward();
}
fail("Non printable Unicode code points must not be accepted.");
} catch (ReaderException e) {
assertEquals(
"unacceptable code point '' (0x5) special characters are not allowed\nin \"'string'\", position 4",
e.toString());
}
}
/**
* test that Reading date and checking String work the same
*/
public void testCheckAll() {
for (char i = 0; i < 256 * 256 - 1; i++) {
char[] chars = new char[1];
chars[0] = i;
String str = new String(chars);
boolean regularExpressionResult = StreamReader.isPrintable(str);
boolean charsArrayResult = true;
try {
new StreamReader(new StringReader(str)).peek();
} catch (Exception e) {
String error = e.getMessage();
assertTrue(error, error.startsWith("unacceptable character")
|| error.equals("special characters are not allowed"));
charsArrayResult = false;
}
assertEquals("Failed for #" + i, regularExpressionResult, charsArrayResult);
}
}
public void testForward() {
StreamReader reader = new StreamReader("test");
while (reader.peek() != '\u0000') {
reader.forward(1);
}
reader = new StreamReader("test");
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 testPeekInt() {
StreamReader reader = new StreamReader("test");
assertEquals('t', reader.peek(0));
assertEquals('e', reader.peek(1));
assertEquals('s', reader.peek(2));
assertEquals('t', reader.peek(3));
reader.forward(1);
assertEquals('e', reader.peek(0));
assertEquals('s', reader.peek(1));
assertEquals('t', reader.peek(2));
}
}
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