So I wrote a simple Spock test for my AccountController.
@TestFor(AccountController)
@Mock([Account])
class AccountControllerSpec extends Specification {
void "should return account with given identfier"() {
when:
def account = new Account(firstName: "Justin", lastName: "Miranda", age: 35).save(flush:true)
params.id = account.id
controller.show()
then:
response.json.id == account.id
response.json.firstName == account.firstName
response.json.lastName == account.lastName
}
}
Next, I wrote a simple controller with just a show method.
class AccountController {
static allowedMethods = [show:"GET"]
def show(Account account) {
if (account == null) {
render status:404
return
}
render account as JSON
}
}
Then I ran the unit test and received the following error.
grails> test-app unit: AccountController --verbose --stacktrace
| Running 1 unit test... 1 of 1
ID: 1
| Failure: should return account with given identfier(com.kinectus.AccountControllerSpec)
| java.lang.IllegalArgumentException: No enum constant org.springframework.http.HttpMethod.
at java.lang.Enum.valueOf(Enum.java:236)
at org.springframework.http.HttpMethod.valueOf(HttpMethod.java:27)
at org.codehaus.groovy.grails.plugins.web.api.ControllersApi.initializeCommandObject(ControllersApi.java:436)
at com.kinectus.AccountControllerSpec.should return account with given identfier(AccountControllerSpec.groovy:24)
Now that I know the solution, the error message is a little more helpful than I originally thought. The period (.) after HttpMethod is not the end of the sentence ... it's actually a hint to the answer. It's saying No enum constant org.springframework.http.HttpMethod.SOMEVALUE. It really should have only taken a few seconds to figure this out, but I had just spent a good deal of time working with HttpStatus, so I thought the issue was with HttpStatus for some reason.
Anyway, the solution is to add a request method to the test before calling the show controller action.
@TestFor(AccountController)
@Mock([Account])
class AccountControllerSpec extends Specification {
void "should return account with given identfier"() {
when:
def account = new Account(firstName: "Justin", lastName: "Miranda", age: 35).save(flush:true)
params.id = account.id
request.method = "GET"
controller.show()
then:
response.json.id == account.id
response.json.firstName == account.firstName
response.json.lastName == account.lastName
}
}
And that's it.
