Groovy example source code file (EachWithReaderAndInputStreamTest.groovy)

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Java - Groovy tags/keywords

eachwithreaderandinputstreamtest, eachwithreaderandinputstreamtest, file, file, groovytestcase, string, stringbufferinputstream, stringbufferinputstream, stringreader, stringreader, this

The Groovy EachWithReaderAndInputStreamTest.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 org.codehaus.groovy.runtime

/**
 * Test .each with Reader and InputStream
 *
 * @author <a href="mailto:joachim.baumann@xinaris.de">Joachim Baumann
 * @version $Revision: $
 */
class EachWithReaderAndInputStreamTest extends GroovyTestCase {
    /**
     * The following instances are used in testing the file operations
     */
    String multiLineVal = """
This text
as can be seen
has multiple lines
and not one punctuation mark
"""

    // Our file instance
    def File file

    void setUpFile() {
        // Setup guarantees us that we use a non-existent file
        file = File.createTempFile("unitTest", ".txt")
        assert file.exists() == true
        //println file.canonicalPath
        assert file.length() == 0L
        file << multiLineVal
    }

    void tearDownFile() {
        // we remove our temporary file
        def deleted = false
        while (deleted == false)
            deleted = file.delete()
        assert file.exists() == false
    }

    void testEachForStringBufferInputStream() {
        def ist = new StringBufferInputStream(multiLineVal)
        def readVal = ""
        ist.each {
            readVal += (char) it
        }
        assert readVal == multiLineVal
    }

    void testEachForStringReader() {
        def ir = new StringReader(multiLineVal)
        def readVal = ""
        ir.each { readVal += it + "\n" }
        assert readVal == multiLineVal
    }

    void testEachForFileWithInputStream() {
        setUpFile()
        def readVal = ""
        file.withInputStream { is ->
            is.each { readVal += (char) it }
        }
        tearDownFile()
        assert readVal == multiLineVal
    }

    void testEachForFileWithReader() {
        setUpFile()
        def readVal = ""
        file.withReader { reader ->
            reader.each { readVal += it + "\n" }
        }
        tearDownFile()
        assert readVal == multiLineVal
    }
}