| // 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 |
| |
| import groovy.test.GroovyTestCase |
| |
| /** |
| * Test to ensure that readLine() method works on Reader/InputStream |
| */ |
| 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()) |
| } |
| |
| void testBufferedReader() throws IOException { |
| Reader reader = new BufferedReader(new StringReader(testString)) |
| readFromReader(reader) |
| } |
| |
| 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. |
| */ |
| |
| 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 { |
| SlowStringReader(String s) { super(s) } |
| |
| boolean markSupported() { return false } |
| } |