CODEWITHSUNDEEP
unit-testinggrailsmocking
Sajeev Zacharias
Sajeev Zacharias

Reputation: 167

Grails Unit Testing: Mocking ApplicationContext

I have the following segment of code in a grails class:

 import org.springframework.context.ApplicationContext;
 import org.codehaus.groovy.grails.web.context.ServletContextHolder
 import org.codehaus.groovy.grails.web.servlet.GrailsApplicationAttributes

    ApplicationContext ctx = (ApplicationContext)ServletContextHolder.servletContext.getAttribute(GrailsApplicationAttributes.APPLICATION_CONTEXT);

        def contentfulContentDeliveryService =   ctx.getBean('contentfulContentDeliveryService')

When I run unit tests, I get an error like:

java.lang.NullPointerException: Cannot invoke method getAttribute() on null object

How can I mock this?

Upvotes: 1

Views: 2521

Answers (2)

Gregor Petrin
Gregor Petrin

Reputation: 2931

What about directly injecting contentfulContentDeliveryService into your class by registering it in resources.groovy and defining a bean reference as discussed in the manual?

Something like:

myBean(MyClass) {
    contentfulContentDeliveryService = ref("contentfulContentDeliveryService")
}

Then you would have a simple property in your class and could mock it like any normal property.

Upvotes: 0

Sajeev Zacharias
Sajeev Zacharias

Reputation: 167

I found a way. I added the following lines to unit tests file.

import org.springframework.mock.web.MockServletContext
import org.codehaus.groovy.grails.web.servlet.GrailsApplicationAttributes
import org.codehaus.groovy.grails.web.context.ServletContextHolder

@TestFor(BannedWordsService)
class BannedWordsServiceTests {

    @Before
    void setUp(){

        def servletContext = new MockServletContext()
        servletContext.setAttribute(GrailsApplicationAttributes.APPLICATION_CONTEXT, mainContext)
        ServletContextHolder.setServletContext(servletContext) 
    -

    -

    } 


 }

Now when I run unit tests, I get an error as:

  org.springframework.beans.factory.NoSuchBeanDefinitionException: No bean named 'contentfulContentDeliveryService' is defined

How can I mock that line?

Upvotes: 1

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