grailsApplication access in Grails unit Test

Question

I am trying to write unit tests for a service which use grailsApplication.config to do some settings. It seems that in my unit tests that service instance could not access the c

Answer 1

Constructing grailsApp using DefaultGrailsApplication would work.

class ZazzercodeUnitTestCase extends GrailsUnitTestCase {
    def grailsApplication = new org.codehaus.groovy.grails.commons.DefaultGrailsApplication()
    def chortIndex= grailsApplication.config.zazzercode.chortIndex
}

Answer 2

If you use @TestFor Grails (2.0) already mock grailsApplication for you, just set your configs, but do not declare the grailsApplication. Doing that overrides the mocked instance.

@TestFor(MyService)
class MyServiceTests {

  @Before
  public void setUp() {
    grailsApplication.config.something = "something"
  }

  @Test
  void testSomething() {
    MyService service = new MyService()
    service.grailsApplication = grailsApplication
    service.doSomething()
  }


}

EDIT:

You declared a String, to add to config you must parse this. See here an example.

Basically you use the ConfigSlurper().parse() to get a ConfigObject, and use grails.config.merge() to add the contents to the config.

Answer 3

Go to http://ilikeorangutans.github.io/2014/02/06/grails-2-testing-guide

Grails’ config is usually accessed via an injected instance of GrailsApplication using the config property. Grails injects GrailsApplication into unit tests, so you can access it directly:

@TestMixin(GrailsUnitTestMixin)
class MySpec extends Specification {        
    private static final String VALUE = "Hello"
    void "test something with config"() {
        setup:
        // You have access to grailsApplication.config so you can 
        //modify these values as much as you need, so you can do
        grailsApplication.config.myConfigValue = VALUE

        assert:             
        grailsApplication.config.myConfigValue == VALUE
    }

}