how to assert values inside “render” in unit test case (grails ,junit)

Question

I was trying to assert the values inside "render" in my unit test cases written in Grails. But it does not seems to be proper

   render(view:"create",model[:])

what i tried was assertEquals("create",renderArgs("view"))

i also tried some alternatives like controller.response.renderedUrl etc. But none of those are working. Could someone give an idea?

Thanks in advance, BK

Answer 1

To test the view you can simply use an implicit view variable, though it will point to the path of your view/template, eg /controller/create . So you could write assertEquals(view, '/controller/create') . There is also an implicit model variable for which you can proceed similarly.

See docs ( Testing View Rendering section).

Answer 2

The following tests work:

grails-app/controllers/demo/DemoController.groovy:

package demo

class DemoController {

    def index() {
        render view: 'first'
    }
}

test/unit/demo/DemoControllerSpec.groovy:

package demo

import grails.test.mixin.TestFor
import spock.lang.Specification

@TestFor(DemoController)
class DemoControllerSpec extends Specification {

    void "test render view"() {
        when:
        controller.index()

        then:
        '/demo/first' == view
    }
}

test/unit/demo/DemoControllerTests.groovy:

package demo

import grails.test.mixin.TestFor

@TestFor(DemoController)
class DemoControllerTests {

    void testRenderView() {
        controller.index()
        assert '/demo/first' == view
    }
}

I hope that helps.