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Groovy example source code file (Groovy3574Bug.groovy)

This example Groovy source code file (Groovy3574Bug.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

call, closure, groovy3574bug, groovytestcase, mytype3574a, mytype3574a, mytype3574b, mytype3574b, runtimeexception, runtimeexception, the, the

The Groovy Groovy3574Bug.groovy source code

package groovy.bugs

class Groovy3574Bug extends GroovyTestCase {
    void testToStringCallDelegationToConvertedClosureProxy() {
        Closure failing1 = { 
            throw new RuntimeException("Call to this closure fails.") 
        }
        
        Closure failing2 = { a, b ->
            assert a == "a"
            assert b == "b"
            throw new RuntimeException("Call to this closure fails.") 
        }
        
        MyType3574A instance1 = failing1 as MyType3574A

        // test call without args
        try{
            instance1.m()
            fail("The call m() should have failed - 1")
        } catch (ex) {
            // ok, if it failed
        }
        
        // this call was getting delegated to the closure earlier
        assert instance1.toString() != null
        
        // test call with args
        MyType3574B instance2 = failing2 as MyType3574B
        try{
            instance2.m("a", "b")
            fail("The call m() should have failed - 2")
        } catch (ex) {
            // ok, if it failed
        }

        // this call was getting delegated to the closure earlier
        assert instance2.toString() != null
    }
}

interface MyType3574A { def m()}

interface MyType3574B { def m(a, b)}

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