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How do I set the expected exception type for a catch statement with a parameter...

 3 years ago
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How do I set the expected exception type for a catch statement with a parameter I passed to a method?

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I'm trying to define a method like the following:

static def myMethod(expectedExceptionType, Closure closure) {
    try {
        closure()
    } catch (expectedExceptionType e) {
        println "Threw an exception: ${e.getMessage()}"
    }
}

and run it with something like this:

MyClass.myMethod(NullPointerException) {
    doSomeStuff()
}

I basically want to be able to pass in a type to my method and then use that actual parameter to define the formal parameter's type in the catch block of my method.

Is this possible?

A Java based solution can be found in GroovyAssert#shouldFail. The Groovy version of this would not look all that much different. But I would suggest just to use that class, since it is part of the Groovy distribution anyway

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