blob: dbdca061529eb0e1b47017dcce03a326aac7392e [file] [log] [blame]
// Do not remove this line: it is used in test below
/*
* 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 groovy
/**
* Test to ensure that readLine() method works on Reader/InputStream
*
* @author <a href="mailto:jeremy.rayner@bigfoot.com">Jeremy Rayner</a>
* @author Joachim Baumann
*/
class ReadLineTest extends GroovyTestCase {
def file
void setUp() {
file = new File("src/test/groovy/ReadLineTest.groovy")
}
void testReadOneLineFromReader() {
def line
file.withReader() {line = it.readLine()}
assert line == "// Do not remove this line: it is used in test below"
}
static testString = " �\n �\n\n �\r\n 5\r\r 7\n\r 9"
static expectedLines = [ " �", " �", "", " �", " 5", "", " 7", "", " 9" ]
static String[] expectedLinesSlow = [ " �", " �", " �", " 5", " 7" ]
static int[] expectedChars = [' ', '9', -1];
void readFromReader(Reader reader) throws IOException {
expectedLines.each { expected ->
def line = reader.readLine()
assertEquals("Readline should return correct line", expected, line)
}
assertNull("Readline should return null", reader.readLine())
}
public void testBufferedReader() throws IOException {
Reader reader = new BufferedReader(new StringReader(testString))
readFromReader(reader)
}
public void testReaderSupportingMark() throws IOException {
Reader reader = new StringReader(testString)
readFromReader(reader)
}
/*
* In this case we cannot read more than one line separator
* Thus empty lines can be returned if line separation is \r\n.
*/
public void testReaderSlow() throws IOException {
Reader reader = new SlowStringReader(testString);
expectedLinesSlow.each { expected ->
String line = reader.readLine()
while(line != null && line.length() == 0) {
line = reader.readLine()
}
assertEquals("Readline should return correct line", expected, line);
}
assertEquals("Readline should return empty string", "", reader.readLine());
expectedChars.each { expected ->
assertEquals("Remaining characters incorrect", expected, reader.read())
}
assertNull(reader.readLine());
}
}
class SlowStringReader extends StringReader {
public SlowStringReader(String s) { super(s); }
public boolean markSupported() { return false }
}