Good morning / good afternoon / good evening! I ha...

# ktor

[Dani Morillas]

Good morning / good afternoon / good evening!
I have a question regarding testing endpoints in ktor and the “new” testApplication. Last time I worked with ktor testApplication didn’t exist.
I have this test

@Test
fun `when user user exists returns code 490`() : Unit = testApplication {
    val client = createClient {
        install(ContentNegotiation) {
            json()
        }
    }

    RepositoriesProvider.userRepository.add(User("", "username", "", false, 0, 0))

    val response = <http://client.post|client.post>("/signup") {
        contentType(ContentType.Application.Json)
        setBody(UserRequest("username", "password"))
    }
    assertThat(response.status).isEqualTo(HttpStatusCode.Conflict)
}

to test the end point. I define the testApplication and the client to install the ContentNegotiation. But I have two questions here:
1. Do I need to repeat the createClient code in every method? Is there any way I can wrap the testApplication with this initialization and use it in all the tests.
2. The instance of the userRepository object is different in this test than in the code when the endpoint is reached. Am I missing something in the initialization so I can use the same instance?
Thanks in advance!

[Aleksei Tirman [JB]]

1. You can define a wrapper function that will call the testApplication function and configure a client.
2. Please try to switch the development mode off:

@Test
fun test() = testApplication {
    environment {
        developmentMode = false
    }

    // ...
}

[Dani Morillas]

Thanks! The developmentMode off helped me for my issue 2.
Not sure if I understand your solution to my question 1.
You mean something like?

fun testApplicationWrapper(block: suspend ApplicationTestBuilder.() -> Unit) {
    testApplication {
        environment {
            developmentMode = false
        }

        createClient {
            install(ContentNegotiation) {
                json()
            }
        }
    }
}

and then something like

@Test
fun test() : Unit = testApplicationWrapper {
   ...
}

?

[Aleksei Tirman [JB]]

I meant something like this:

fun myTest(test: suspend (HttpClient) -> Unit) = testApplication {
    environment {
        developmentMode = false
    }

    val client = createClient {
        install(ContentNegotiation) {
            json()
        }
    }

    test(client)
}

[Aleksei Tirman [JB]]

@Test
fun test() = myTest { client ->
    assertEquals("OK", client.get("/").bodyAsText())
}

[Dani Morillas]

looks good. I’ll try it. Thanks a lot for the help!