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Groovy example source code file (SingletonBugTest.groovy)

This example Groovy source code file (SingletonBugTest.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

get, get, groovytestcase, singletonbugprivate, singletonbugprivate, singletonbugprivatesecond, singletonbugprotected, singletonbugprotected, singletonbugprotectedsecond, singletonbugprotectedsecond, singletonbugtest

The Groovy SingletonBugTest.groovy source code

package groovy
// TODO: GROOVY-435

class SingletonBugTest extends GroovyTestCase {

    public void testPrivate() {
        def x = SingletonBugPrivate.getInstance()
        def y = SingletonBugPrivate.getInstance()
        println "Get one private instance: $x"
        println "Get another private instance: $y"
        assert x == y

         println(SingletonBugPrivateSecond.getInstanceSecond())
         println(SingletonBugPrivateSecond.doTestSecond())
        // shouldFail { println(SingletonBugPrivateSecond.getInstanceSecond()) }
        // shouldFail { println(SingletonBugPrivateSecond.doTestSecond()) }
    }

    public void testProtected() {
        def x = SingletonBugProtected.getInstance()
        def y = SingletonBugProtected.getInstance()
        println "Get one protected instance: $x"
        println "Get another protected instance: $y"
        assert x == y

        println(SingletonBugProtectedSecond.getInstanceSecond())
        println(SingletonBugProtectedSecond.doTestSecond())
        x = SingletonBugProtectedSecond.getInstanceSecond()
        y = SingletonBugProtectedSecond.doTestSecond()
        assert x != y
    }

}


class SingletonBugPrivate {

    private static SingletonBugPrivate instance1 = null

    private SingletonBugPrivate() {
    }
    
    static SingletonBugPrivate getInstance() {
        if (instance1 == null)
            instance1 = new SingletonBugPrivate()
        return instance1
    }
    
    // private static SingletonBugPrivate getInstance2() {
    //     if (instance1 == null)
    //         instance1 = new SingletonBugPrivate()
    //     return instance1
    // }
}


class SingletonBugProtected {

    private static SingletonBugProtected instance1 = null

    protected SingletonBugProtected() {
    }
    
    static SingletonBugProtected getInstance() {
        if (instance1 == null)
            instance1 = new SingletonBugProtected()
        return instance1
    }
    
    // private static SingletonBugProtected getInstance2() {
    //     if (instance1 == null)
    //         instance1 = new SingletonBugProtected()
    //     return instance1
    // }
}


class SingletonBugPrivateSecond extends SingletonBugPrivate {

    static SingletonBugPrivate getInstanceSecond() {
        return doTestSecond()
    }

    static SingletonBugPrivate doTestSecond() {
        return new SingletonBugPrivate()
    }
}


class SingletonBugProtectedSecond extends SingletonBugProtected {

    static SingletonBugProtected getInstanceSecond() {
        return doTestSecond()
    }

    static SingletonBugProtected doTestSecond() {
        return new SingletonBugProtected()
    }
}

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