Groovy example source code file (FilterLineTest.groovy)

This example Groovy source code file (FilterLineTest.groovy) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - Groovy tags/keywords

chararraywriter, chararraywriter, file, file, fileinputstream, fileinputstream, filterlinetest, groovytestcase, groovytestcase

The Groovy FilterLineTest.groovy source code

/*
 * Copyright 2003-2010 the original author or authors.
 *
 * 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 groovy

/**
 * check that the new filterLine() method on InputStream is ok
 * (and indirectly test newReader() method on InputStream)
 * as specified in GROOVY-624 and GROOVY-625
 *
 * @author <a href="mailto:jeremy.rayner@bigfoot.com">Jeremy Rayner
 * @version $Revision: 20570 $
 */

class FilterLineTest extends GroovyTestCase {
    def myFile
    def myInput
    def myOutput

    void setUp() {
        myFile = new File("src/test/groovy/FilterLineTest.groovy")
        myInput = new FileInputStream(myFile)
        myOutput = new CharArrayWriter()
    }

    void testFilterLineOnFileReturningAWritable() {
        def writable = myFile.filterLine() {it.contains("testFilterLineOnFileReturningAWritable")}
        writable.writeTo(myOutput)
        assert 3 == myOutput.toString().count("testFilterLineOnFileReturningAWritable")
    }

    void testFilterLineOnFileUsingAnOutputStream() {
        myFile.filterLine(myOutput) {it.contains("testFilterLineOnFileUsingAnOutputStream")}
        assert 3 == myOutput.toString().count("testFilterLineOnFileUsingAnOutputStream")
    }

    void testFilterLineOnInputStreamReturningAWritable() {
        def writable = myInput.filterLine() {it.contains("testFilterLineOnInputStreamReturningAWritable")}
        writable.writeTo(myOutput)
        assert 3 == myOutput.toString().count("testFilterLineOnInputStreamReturningAWritable")
    }

    void testFilterLineOnInputStreamUsingAnOutputStream() {
        myInput.filterLine(myOutput) {it.contains("testFilterLineOnInputStreamUsingAnOutputStream")}
        assert 3 == myOutput.toString().count("testFilterLineOnInputStreamUsingAnOutputStream")
    }
}