How to Mock POST request which have a response ?

[nik6018]

Hi,

I have a login API where it accepts values in it's POST body and returns a User Object if the request is successful. I tried multiple ways but I am not able to mock this type of request. I checked Tests file which has many examples, but the example with POST request ignores the response.

Network Mocking is fairly new to me and I am still learning so should I be mocking such a scenario or is this irrelevant ?

I am trying to use the following code

func testUserLogin() {

    let configuration = URLSessionConfiguration.af.default
    configuration.protocolClasses = [MockingURLProtocol.self] + (configuration.protocolClasses ?? [])
    let sessionManager = Session(configuration: configuration)

    let url = URL(string: "https://example.com/login")!
    let validPostBodyExpectation = expectation(description: "Post body was valid")
    let validPostResponse = expectation(description: "Post response was valid")

    let rawPostData: [String: String] = [
        "key1" : "value1",
        "key2" : "value2"
    ]

    let mockedData = try! JSONEncoder().encode(rawPostData)
    let mockedResponseObject = UserDetailMockedData().getMockedObject()

    var mock = Mock(url: url, dataType: .json, statusCode: 200, data: [.post: mockedData])

    mock.onRequest = { request, httpBodyArguments in

        /// Verify the POST arguments
        XCTAssertEqual(httpBodyArguments as? [String: String], [
                "key1" : "value1",
                "key2" : "value2"
        ])

        validPostBodyExpectation.fulfill()
    }

    mock.register()

    sessionManager
        .request(url)
        .responseDecodable(of: UserDetail.self) { (response) in
            XCTAssertNil(response.error)
            XCTAssertEqual(response.value, mockedResponseObject)

            validPostResponse.fulfill()
        }.resume()

    wait(for: [validPostBodyExpectation, validPostResponse], timeout: 10.0)
}

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