Grails 3.3.11 Integration Test (GrailsApplication) - grails

Question

I am now in trouble with the configuration variable GrailsApplication in my Integration Tests. I don't know why, but, I am not managing to get its value when testing my api. I am using Grails 3.3.11. The value of the variable is being null and, due to it, I can't authenticate to perform the tests. I would appreciate your help. I am using Grails 3.3.11.
package br.com.xxx.id.test.integration
//Imports were moved out to simplify understanding
class IdControllerSpec extends Specification {
def grailsApplication
#Value('${local.server.port}')
Integer serverPort
String accessToken
String baseUrl
JSONObject documentPropertiesForTesting
JSONObject documentForTesting
String partTest
String userTest
String typeIdTest
String refreshToken
void setup(){
baseUrl = "http://localhost:${serverPort}/cmbid/api/v1"
partTest = "partTest"
}
void "Saving a new and valid document properties"() {
when:
refreshToken = grailsApplication.config.getProperty('refreshToken')
accessToken = "Bearer " + authenticateXxxAut()
documentPropertiesForTesting = createNewTestDocumentProperties()
typeIdTest = documentPropertiesForTesting.get("message").toString().substring(20,52)
then:
documentPropertiesForTesting.get("status") == "ok"
documentPropertiesForTesting.get("message").contains("properly saved!")
cleanup:
DocumentProperties.withNewSession {
def dp = DocumentProperties.findById(typeIdTest)
dp.delete(flush: true)
}
}
def authenticateXxxAut() {
CloseableHttpClient httpClient = HttpClients.createDefault();
String response = ""
try {
JSONObject responseBody
println('****************************')
println(grailsApplication.config.getProperty('aut.newTokenUrl'))
println(grailsApplication.config.getProperty('refreshToken)'))
println('****************************')
def httpPost = new HttpPost(grailsApplication.config.getProperty('aut.newTokenUrl') + grailsApplication.config.getProperty('refreshToken)'))
CloseableHttpResponse httpResponse = httpClient.execute(httpPost)
if (httpResponse.getStatusLine().getStatusCode() == 200) {
responseBody = new JSONObject(EntityUtils.toString(httpResponse.getEntity()))
response = responseBody.get("access_token")
} else {
response = httpResponse.getStatusLine().getStatusCode().toString()
}
} catch (Exception e){
print(e.getLocalizedMessage())
} finally {
httpClient.close()
return response
}
}

Answer 1

I've been upgrading a Grails 2.x app to version 3.3.11 and just referencing the (provided) variable serverPort worked for me. The IDE shows it as being uninitialized but running the tests, it gets the correct value assigned. I also have my test classes annotated with #Integration(applicationClass = Application.class).
Here's how I get the URL to point against:
def url = "http://localhost:${serverPort}${grailsApplication.config.getProperty('server.contextPath', String, '')}"