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Groovy example source code file (ProcessTest.groovy)

This example Groovy source code file (ProcessTest.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

anothermockinputstream, anothermockinputstream, bytearrayoutputstream, groovytestcase, inputstream, inputstream, mockprocess, mockprocess, outputstream, outputstream, process, processtest

The Groovy ProcessTest.groovy source code

package groovy

/**
 * check that groovy Process methods do their job.
 *
 * @author <a href="mailto:jeremy.rayner@bigfoot.com">Jeremy Rayner
 * @version $Revision: 4996 $
 */

class ProcessTest extends GroovyTestCase {
    def myProcess
    
    void setUp() {
        myProcess = new MockProcess()
    }
    
    void testProcessAppendBytes() {
        def myBytes = "mooky".getBytes()
                  
        myProcess << myBytes
                  
        def result = myProcess.outputStream.toByteArray()
        assert result != null
        assert Arrays.equals(myBytes,result)
    }
    void testProcessAppendTwoByteArrays() {
        def myBytes1 = "foo".getBytes()
        def myBytes2 = "bar".getBytes()
                  
        myProcess << myBytes1 << myBytes2
                  
        def result = myProcess.outputStream.toByteArray()
        assert result != null
        assert result.size() == myBytes1.size() + myBytes2.size()          
    }
    
    void testProcessAppend() {
        myProcess << "mooky"
        assert "mooky" == myProcess.outputStream.toString()
    }
    
    void testProcessInputStream() {
        assert myProcess.in instanceof InputStream
        assert myProcess.in != null
    }
    
    void testProcessText() {
        assert "" == myProcess.text
    }
    
    void testProcessErrorStream() {
        assert myProcess.err instanceof InputStream
        assert myProcess.err != null
    }
    
    void testProcessOutputStream() {
        assert myProcess.out instanceof OutputStream
        assert myProcess.out != null
    }
    
    // @todo - ps.waitForOrKill(secs) creates it's own thread, leave this out of test suite for now...
    
    void tearDown() {
        myProcess.destroy()
    }
}

/**
 * simple Process, used purely for test cases
 */
class MockProcess extends Process {
    private def e
    private def i
    private def o
    
    public MockProcess() {
        e = new AnotherMockInputStream()
        i = new AnotherMockInputStream()
        o = new ByteArrayOutputStream()
    }
    void destroy() {}
    int exitValue() { return 0 }
    InputStream getErrorStream() { return e }
    public InputStream getInputStream() { return i }
    public OutputStream getOutputStream() { return o }
    int waitFor() { return 0 }
}

/**
 * only needed for workaround in groovy, 
 *     new ByteArrayInputStream(myByteArray) doesn't work at mo... (28-Sep-2004)
 */
class AnotherMockInputStream extends InputStream {
    int read() { return -1 }
}

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