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Groovy example source code file (MethodClosureTest.groovy)

This example Groovy source code file (MethodClosureTest.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

class, class, closure, closure, groovytestcase, methodclosure, methodclosure, methodclosuretest, methodclosuretest

The Groovy MethodClosureTest.groovy source code

package groovy.bugs

import org.codehaus.groovy.runtime.MethodClosure

class MethodClosureTest extends GroovyTestCase {

    def aa(x) {
        x
    }
    
    static bb(it) { it}

    void testMethodClosure() {
        Class[] c1 = [ Exception.class, Throwable.class ]
        Class[] c2 = [ IllegalStateException.class ]

        def cl = this.&aa

        assert cl instanceof Closure
        assert cl instanceof MethodClosure

        assert [c1, c2].collect(cl) == [c1,c2]
    }
    
    void testStaticMethodAccess() {
       def list = [1].collect (this.&bb)
       assert list == [1]
       list = [1].collect (MethodClosureTest.&bb)
       assert list == [1]
       def mct = new MethodClosureTest()
       list = [1].collect (mct.&bb)
       assert list == [1]
    }
}


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