groovy / grails / unit testing / createCriteria.get

Question

I can mock calls to:

MyDomainClass.createCriteria().list{
    eq(\'id\',id)
    eq(\'anotherParameter\',anotherParameterId)
}

with:

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Answer 1

I wouldn't bother. Instead create methods in your domain class and mock those. This makes testing easier but more importantly has the advantage of keeping persistence where it belongs instead of scattering it throughout the code base:

class MyDomainClass {
   String foo
   int bar

   static MyDomainClass findAllByIdAndAnotherParameter(long id, long anotherParameterId) {
      createCriteria().list {
         eq('id',id)
         eq('anotherParameter',anotherParameterId)
      }
   }

   static MyDomainClass getByIdAndAnotherParameter(long id, long anotherParameterId) {
      createCriteria().get {
         eq('id',id)
         eq('anotherParameter',anotherParameterId)
      }
   }
}

Then in your tests, just mock it as

def testInstances = [...]
MyDomainClass.metaClass.static.findAllByIdAndAnotherParameter = { long id, long id2 ->
   return testInstances
}

and

def testInstance = new MyDomainClass(...)
MyDomainClass.metaClass.static.getByIdAndAnotherParameter = { long id, long id2 ->
   return testInstance
}