I've got a Grails controller which relies on the message taglib to resolve an i18n message:

class TokenController {
def passwordReset = {
    def token = DatedToken.findById(params.id);
    if (!isValidToken(token, params)) {
        flash.message = message(code: "forgotPassword.reset.invalidToken")
        redirect controller: 'forgotPassword', action: 'index'
        return
    }
    render view:'/forgotPassword/reset', model: [token: token.token]
}
}

I've written a unit test for the controller:

class TokenControllerTests extends ControllerUnitTestCase {

void testPasswordResetInvalidTokenRedirect() {

    controller.passwordReset()
    assert...
}
}

Since the message taglib is called in the controller I get a MissingMethodException:

groovy.lang.MissingMethodException: No signature of method: TokenController.message() is applicable for argument types: (java.util.LinkedHashMap) values: [[code:forgotPassword.reset.invalidToken]]

Does anyone know the best way to get around this issue in a unit test? Ideally I would like to perform assertions on the message but right now I'd be happy if the test just ran!

Thanks