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Updated: Mocking Hibernate Create Criteria in Grails’ Unit Test with GMock

December 6, 2010 by Annyce Davis Leave a Comment

Using the GMock Library I have updated my unit tests to mock out the create criteria methods the following way:

void testSomeFunction() {
def results = []

def mockCriteria = mock() {
list(instanceOf(Closure)).returns(results)
}

mock(Book).static.createCriteria().returns(mockCriteria)

play {
assertEquals null, bookService.getDefaultBook(null)
}
}

You need to add the following to the top of the unit test file with the import statements:

import org.gmock.*
import static org.hamcrest.Matchers.*

@WithGMock

Also add the following to your BuildConfig.groovy:

dependencies {
test "org.gmock:gmock:0.8.0"
test "org.hamcrest:hamcrest-all:1.0"
}

I learned this from the following blog post: http://adhockery.blogspot.com/2010/01/using-gmock-to-complement-grails.html

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Filed Under: Grails Tagged With: GMock, Hibernate Cache, Mock, Unit Testing

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