Unit Testing in iOS using swift (Part 3)

Kunal Prasad

30 August 2019

Network Call check using Almofire.

In the previous blog, we have covered how to test the URL response is Valid or not using URLSession,

In this blog, we will cover through Almofire.

Previous Blog Link:

Unit Testing in iOS using swift (Part 2)

In This Blog we are not discussing about the expectaion for handling the Async call, this is already covered in the previous blog.

There are some steps that we need to follow.

1: Set Up Network Class.

First,we need to write the common class for network call.

class NetworkManager: NSObject {
   
      class var sharedInstance: NetworkManager {
        struct Singleton {
            static let instance = NetworkManager()
        }
        return Singleton.instance
        
    }
    
    func callingHttpRequest(params: [String: Any], method: HTTPMethod, apiname: WhichApiCall, taskCallback: @escaping (Int,
        AnyObject?) -> Void) {
        let defaults = UserDefaults.standard
        var urlString: String = ""
        urlString = hostName + apiname.rawValue
        var params = params
        if method == .get {
            urlString += "?storeId=" + Defaults.storeId
            urlString += "&quoteId=" + Defaults.quoteId
            urlString += "&currency=" + (Defaults.currency ?? "")
            urlString += "&customerToken=" + (Defaults.customerToken ?? "")
            urlString += "&websiteId=" + UrlParams.defaultWebsiteId
            urlString += "&width=" + UrlParams.width
        } else {
            params["currency"] = Defaults.currency
        }
        print("auth key", defaults.object(forKey: "authKey") as? String ?? "")
        print("url", urlString)
        print("params", params)
        var headers: HTTPHeaders = [:]
        if defaults.object(forKey: "authKey") == nil {
            headers = [
                "authKey": ""
            ]
        } else {
            headers = [
                "authKey": defaults.object(forKey: "authKey") as? String ?? ""
            ]
        }
        Alamofire.request(urlString, method: method, parameters: params, headers: headers).validate().responseJSON { response in
            switch response.result {
            case .success(let resultData):
                taskCallback(1, resultData as AnyObject)
            case .failure(let error):
                    taskCallback(0,datastring as AnyObject)
                
              }
            }
        
        }
    }

class NetworkManager: NSObject {

class var sharedInstance: NetworkManager {

struct Singleton {

static let instance = NetworkManager()

}

return Singleton.instance

}

func callingHttpRequest(params: [String: Any], method: HTTPMethod, apiname: WhichApiCall, taskCallback: @escaping (Int,

AnyObject?) -> Void) {

let defaults = UserDefaults.standard

var urlString: String = ""

urlString = hostName + apiname.rawValue

var params = params

if method == .get {

urlString += "?storeId=" + Defaults.storeId

urlString += "&quoteId=" + Defaults.quoteId

urlString += "&currency=" + (Defaults.currency ?? "")

urlString += "&customerToken=" + (Defaults.customerToken ?? "")

urlString += "&websiteId=" + UrlParams.defaultWebsiteId

urlString += "&width=" + UrlParams.width

} else {

params["currency"] = Defaults.currency

}

print("auth key", defaults.object(forKey: "authKey") as? String ?? "")

print("url", urlString)

print("params", params)

var headers: HTTPHeaders = [:]

if defaults.object(forKey: "authKey") == nil {

headers = [

"authKey": ""

]

} else {

headers = [

"authKey": defaults.object(forKey: "authKey") as? String ?? ""

]

}

Alamofire.request(urlString, method: method, parameters: params, headers: headers).validate().responseJSON { response in

switch response.result {

case .success(let resultData):

taskCallback(1, resultData as AnyObject)

case .failure(let error):

taskCallback(0,datastring as AnyObject)

}

Here we have written the network class where it will accept the

1: Api Name. : it the name which appends with your hostName.

2: Request Type

3: Params

3: hostName: is baseURL like http://www.google.com

2: Open Your Test Class.

First,declare all the variable in the class.

import XCTest
@testable import Mobikul_Single_App


class CartTestClass: XCTestCase {
    var requstParams = [String: Any]()
    var promise:XCTestExpectation!
    var serverResponseValue:Int = 0
    var serverResponseData:AnyObject?

}

import XCTest

@testable import Mobikul_Single_App

class CartTestClass: XCTestCase {

var requstParams = [String: Any]()

var promise:XCTestExpectation!

var serverResponseValue:Int = 0

var serverResponseData:AnyObject?

}

3: Set up your test Class.

 override func setUp() {
        requstParams["storeId"] = Defaults.storeId
        requstParams["customerToken"] = Defaults.customerToken
        requstParams["quoteId"] = Defaults.quoteId
    }

override func setUp() {

requstParams["storeId"] = Defaults.storeId

requstParams["customerToken"] = Defaults.customerToken

requstParams["quoteId"] = Defaults.quoteId

}

4 : Apply the Network Call.

    func testCartAPIRequest() {
        
        promise = expectation(description: "CallBack handler invoked")
        NetworkManager.sharedInstance.callingHttpRequest(params: requstParams, method: .get, apiname:  .cartData,showPopup:false) { [weak self] (value,responseMessage) in
            self?.serverResponseValue = value
            self?.serverResponseData = responseMessage
            self?.promise.fulfill()
        }
        wait(for: [self.promise], timeout: 10)
        
        switch serverResponseValue {
        case 1:
            let data =  JSON(serverResponseData as? NSDictionary ?? [:])
            XCTAssertTrue(true)
        case 2:
            XCTFail("errorTestMessage \(data)")
       }
    }

func testCartAPIRequest() {

promise = expectation(description: "CallBack handler invoked")

NetworkManager.sharedInstance.callingHttpRequest(params: requstParams, method: .get, apiname: .cartData,showPopup:false) { [weak self] (value,responseMessage) in

self?.serverResponseValue = value

self?.serverResponseData = responseMessage

self?.promise.fulfill()

}

wait(for: [self.promise], timeout: 10)

switch serverResponseValue {

case 1:

let data = JSON(serverResponseData as? NSDictionary ?? [:])

XCTAssertTrue(true)

case 2:

XCTFail("errorTestMessage \(data)")

}

5: Complete Class code :

import XCTest
@testable import Mobikul_Single_App


class CartTestClass: XCTestCase {
    var requstParams = [String: Any]()
    var promise:XCTestExpectation!
    var serverResponseValue:Int = 0
    var serverResponseData:AnyObject?
    
    
    override func setUp() {
        requstParams["storeId"] = Defaults.storeId
        requstParams["customerToken"] = Defaults.customerToken
        requstParams["quoteId"] = Defaults.quoteId
    }
    
    override func tearDown() {
        cartModel = nil
        super.tearDown()
    }
    
    func testCartAPIRequest() {
        
        promise = expectation(description: "CallBack handler invoked")
        NetworkManager.sharedInstance.callingHttpRequest(params: requstParams, method: .get, apiname:  .cartData,showPopup:false) { [weak self] (value,responseMessage) in
            self?.serverResponseValue = value
            self?.serverResponseData = responseMessage
            self?.promise.fulfill()
        }
        wait(for: [self.promise], timeout: 10)
        
        switch serverResponseValue {
        case 1:
            let data =  JSON(serverResponseData as? NSDictionary ?? [:])
            XCTAssertTrue(true)
        case 2:
            XCTFail("errorTestMessage \(data)")
       }
    }
    
    
}