grails 4 unit test controller could not find class

Question

I am using grails 4 to create unit test for controller https://testing.grails.org/latest/guide/index.html

My controller is under grails-app/controllers/mypack/myfolder/exampleController.groovy

My unit test is under src/test/groovy/mypack/myfolder/exampleControllerSpec.groovy

my unit test is like this class exampleControllerSpec extends Specification implements ControllerUnitTest< exampleController>

but it complain can not resolve symbol 'exampleController'

anything wrong here?

how to import exampleController

Answer 1

The project at https://github.com/jeffbrown/leecontrollertest demonstrates how to construct the test.

https://github.com/jeffbrown/leecontrollertest/blob/d6fc272a69406f71286bf5268794ef4a4252a15b/grails-app/controllers/mypack/myfolder/exampleController.groovy

package mypack.myfolder

// NOTE: The nonstandard class naming convention here is intentional
// per https://stackoverflow.com/questions/65723769/grails-4-unit-test-controller-could-not-find-class
class exampleController {

    def hello() {
        render 'Hello, World!'
    }
}

https://github.com/jeffbrown/leecontrollertest/blob/d6fc272a69406f71286bf5268794ef4a4252a15b/src/test/groovy/mypack/myfolder/exampleControllerSpec.groovy

package mypack.myfolder

import grails.testing.web.controllers.ControllerUnitTest
import spock.lang.Specification

// NOTE: The nonstandard class naming convention here is intentional
// per https://stackoverflow.com/questions/65723769/grails-4-unit-test-controller-could-not-find-class
class exampleControllerSpec extends Specification implements ControllerUnitTest<exampleController> {

    void "test action which renders text"() {
        when:
        controller.hello()

        then:
        status == 200
        response.text == 'Hello, World!'
    }
}