How to mock the GrailsApplication for unit test in a @component object

Question

I have a Component

@Component
class SomeComponent {

    @Autowired
    GrailsApplication grailsApplication

    String buildString(String someInfo) {
       return "${grailsApplication.config.my.string}${someInfo}"
    } 
}

And a unit test

@TestMixin(ControllerUnitTestMixin)
class SomeComponent Tests {


@Test
void test() {
   SomeComponent component = new SomeComponent()

   component.grailsApplication = new Expando()
   component.grailsApplication.config = [config: [my: [string: 'FOO']]]

    assert component.buildString('BAR') == 'FOOBAR'
    }
}

When I execute my test I got this error:

org.codehaus.groovy.runtime.typehandling.GroovyCastException: Cannot cast object '{}' with class 'groovy.util.Expando' to class 'org.codehaus.groovy.grails.commons.GrailsApplication'

So what's the best way to do this?

You're trying to shove an Expando.class into a property defined as GrailsApplication — dstarh, Feb 21 '13 at 20:49
Yep I tried to put a def, but I had some other problem when autowired — Thermech, Feb 21 '13 at 20:52

Thermech · Answer 1 · 2013-02-22T16:56:22.873

0

Here how I fix it without using a def:

SomeComponent component = new SomeComponent(grailsApplication: grailsApplication)
component.grailsApplication.config.my.string = 'FOO'

edited Feb 22 '13 at 16:56

answered Feb 21 '13 at 20:54

Thermech

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ControllerUnitTestMixin already declare a grailsApplication mock, you can use that directly instead of creating a new mock. – Feb 22 '13 at 14:56

How to mock the GrailsApplication for unit test in a @component object

1 Answers1