> I'm having trouble with replacing and then restoring a method using
> metaClass, to override behaviour for a test. Any help much appreciated.

> In one of my tests, I inject:
>        Foo.metaClass.myBusinessLogic = { /* record stuff here */ }

> That works well for intercepting the (expensive) call and recording it.
> But everything in the test suite then subsequently fails because the method
> is now a no-op! I've been trying to restore the original method in the
> tearDown.

> ---
> My attempts have involved code like that below. But for each of my
> attempts, it keeps writing out "replacement".

> class ReplacingAndRestoringMetaMetho**d {
>    public static void main(String[] args) {
>        def origMethod = Foo.metaClass.myBusinessLogic
>        //def origMethod2 = Foo.metaClass.getMetaMethod("**myBusinessLogic",
> new Object[0])

>        Foo.metaClass.myBusinessLogic = { println "replacement" }
>        Foo.metaClass.myBusinessLogic = origMethod

>        new Foo().myBusinessLogic()
>    }
> }

> public class Foo {
>    public void myBusinessLogic() { println "orig" }
> }

> Thanks, Aled

> p.s. I'd prefer to use http://docs.codehaus.org/**
> display/GROOVY/Groovy+Mocks<http://docs.codehaus.org/display/GROOVY/Groovy+Mocks>,
> but the code hasn't been written to support such injection...

> ------------------------------**------------------------------**---------
> To unsubscribe from this list, please visit:

>   http://xircles.codehaus.org/**manage_email<http://xircles.codehaus.org/manage_email>

> *class Foo {*
> *
> *
> *    def bar() {*
> *        'Original'*
> *    }*
> **
> *}*
> *
> *
> *class FooTestCategory {*
> **
> *    static String bar(Foo foo) {*
> *        'Mocked'*
> *    }*
> **
> *}*
> *
> *
> *def foo = new Foo()*
> *
> *
> *assert "Original" == foo.bar()*
> *
> *
> *use (FooTestCategory) {*
> *    assert "Mocked"== foo.bar()*
> *}*
> *
> *
> *assert "Original" == foo.bar()*

> []'s
> Paulo Poiati

> blog.paulopoiati.com <http://blog.paulopoiati.com>

> On Fri, Dec 2, 2011 at 4:29 PM, Aled Sage <aled.s...@cloudsoftcorp.com
> <mailto:aled.s...@cloudsoftcorp.com>> wrote:

>     Hi,

>     I'm having trouble with replacing and then restoring a method
>     using metaClass, to override behaviour for a test. Any help much
>     appreciated.

>     In one of my tests, I inject:
>            Foo.metaClass.myBusinessLogic = { /* record stuff here */ }

>     That works well for intercepting the (expensive) call and
>     recording it. But everything in the test suite then subsequently
>     fails because the method is now a no-op! I've been trying to
>     restore the original method in the tearDown.

>     ---
>     My attempts have involved code like that below. But for each of my
>     attempts, it keeps writing out "replacement".

>     class ReplacingAndRestoringMetaMethod {
>        public static void main(String[] args) {
>            def origMethod = Foo.metaClass.myBusinessLogic
>            //def origMethod2 =
>     Foo.metaClass.getMetaMethod("myBusinessLogic", new Object[0])

>            Foo.metaClass.myBusinessLogic = { println "replacement" }
>            Foo.metaClass.myBusinessLogic = origMethod

>            new Foo().myBusinessLogic()
>        }
>     }

>     public class Foo {
>        public void myBusinessLogic() { println "orig" }
>     }

>     Thanks, Aled

>     p.s. I'd prefer to use
>     http://docs.codehaus.org/display/GROOVY/Groovy+Mocks, but the code
>     hasn't been written to support such injection...

>     ---------------------------------------------------------------------
>     To unsubscribe from this list, please visit:

>     http://xircles.codehaus.org/manage_email

> I'm having trouble with replacing and then restoring a method using
> metaClass, to override behaviour for a test. Any help much appreciated.

> In one of my tests, I inject:
>        Foo.metaClass.myBusinessLogic = { /* record stuff here */ }

> That works well for intercepting the (expensive) call and recording it. But
> everything in the test suite then subsequently fails because the method is
> now a no-op! I've been trying to restore the original method in the
> tearDown.

> class ReplacingAndRestoringMetaMethod {
>    public static void main(String[] args) {
>        def origMethod = Foo.metaClass.myBusinessLogic
>        //def origMethod2 = Foo.metaClass.getMetaMethod("myBusinessLogic",
> new Object[0])

>        Foo.metaClass.myBusinessLogic = { println "replacement" }
>        Foo.metaClass.myBusinessLogic = origMethod

>        new Foo().myBusinessLogic()
>    }
> }

> public class Foo {
>    public void myBusinessLogic() { println "orig" }
> }

> Thanks, Aled

> p.s. I'd prefer to use http://docs.codehaus.org/display/GROOVY/Groovy+Mocks,
> but the code hasn't been written to support such injection...

> ---------------------------------------------------------------------
> To unsubscribe from this list, please visit:

>   http://xircles.codehaus.org/manage_email

> class Foo {

>    static def bar() {
>        'Original'
>    }
> }

> assert "Original" == Foo.bar()

> Foo.metaClass.'static'.bar = {"Mocked" }

> assert "Mocked" == Foo.bar()

> Foo.metaClass = null

> assert "Original" == Foo.bar()

> Foo.metaClass.'static'.bar = {"Mocked" }

> assert "Mocked" == Foo.bar()

> Foo.metaClass = null

> assert "Original" == Foo.bar()

> --
> View this message in context:
> http://groovy.329449.n5.nabble.com/metaclass-how-to-replace-and-resto...
> Sent from the groovy - user mailing list archive at Nabble.com.

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