Mock Grails configurations in Integration test cases - grails

Question

How to mock Grails configurations in Integration test cases?
Consider following scenario
MyController.groovy
def save() {
baseLink = Holders.getFlatConfig()["grails.test.base.link"]
if (!baseLink) {
response.status = HttpStatus.NOT_ACCEPTABLE.value
respond([message: "Configuration not found."])
return
}
// Some Code
}
MyControllerIntegrationSpec.groovy
def save() {
baseLink = Holders.getFlatConfig()["grails.test.base.link"]
if (!baseLink) {
response.status = HttpStatus.NOT_ACCEPTABLE.value
respond([message: "Configuration not found."])
return
}
// Some Code
}
def setup() {
//Some Setup Code
//Update configuration
grailsApplication.config["grails.test.base.link"] = true
}
void "Configuration not found"() {
when: ""
myController.save()
then: "Configuration not found"
controller.response.json["message"] == "Configuration not found."
controller.response.status == HttpStatus.NOT_ACCEPTABLE.value
}
void "Configuration found"() {
when: ""
myController.save()
then: "Configuration found"
//some code
}

Answer 1

Assuming you know why you want to mock the grails application in an integration test, my suggestion would be to use DI of grailsApplication. Is there any reason why you use baseLink = Holders.getFlatConfig()["grails.test.base.link"] instead of grailsApplication.config.grails.test.base.link ? What grails version are you using?
When using grailsApplication as a dependency the controller, you can inject it in the test:
def setup() {
myController.grailsApplication = [config: [grails: [test: [base: [link: true]]]]]
}
void "Configuration found"() {
when: ""
myController.save()
then: "Configuration found"
//some code
}