Adding some API tests

AutoCat2.xcodeproj/project.pbxproj

@@ -35,6 +35,9 @@
 		7A40D60826998DCF009B0BC4 /* Alert.swift in Sources */ = {isa = PBXBuildFile; fileRef = 7A40D60726998DCF009B0BC4 /* Alert.swift */; };
 		7A40D60926998DCF009B0BC4 /* Alert.swift in Sources */ = {isa = PBXBuildFile; fileRef = 7A40D60726998DCF009B0BC4 /* Alert.swift */; };
 		7A40D60C2699A070009B0BC4 /* MockURLProtocol.swift in Sources */ = {isa = PBXBuildFile; fileRef = 7A40D60B2699A070009B0BC4 /* MockURLProtocol.swift */; };
+		7A503C03269F382F002C1A0D /* login_success.json in Resources */ = {isa = PBXBuildFile; fileRef = 7A503C02269F382F002C1A0D /* login_success.json */; };
+		7A503C05269F494C002C1A0D /* login_invalid_params.json in Resources */ = {isa = PBXBuildFile; fileRef = 7A503C04269F494C002C1A0D /* login_invalid_params.json */; };
+		7A503C07269F49F4002C1A0D /* login_wrong_credentials.json in Resources */ = {isa = PBXBuildFile; fileRef = 7A503C06269F49F4002C1A0D /* login_wrong_credentials.json */; };
 		7A683999269612EA00B2188A /* Response.swift in Sources */ = {isa = PBXBuildFile; fileRef = 7A683998269612EA00B2188A /* Response.swift */; };
 		7A68399A269612EA00B2188A /* Response.swift in Sources */ = {isa = PBXBuildFile; fileRef = 7A683998269612EA00B2188A /* Response.swift */; };
 		7ACD05D72695C08A00557667 /* Constants.swift in Sources */ = {isa = PBXBuildFile; fileRef = 7ACD05D62695C08A00557667 /* Constants.swift */; };
@@ -113,6 +116,9 @@
 		7A40D6012694FF5D009B0BC4 /* Api.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = Api.swift; sourceTree = "<group>"; };
 		7A40D60726998DCF009B0BC4 /* Alert.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = Alert.swift; sourceTree = "<group>"; };
 		7A40D60B2699A070009B0BC4 /* MockURLProtocol.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = MockURLProtocol.swift; sourceTree = "<group>"; };
+		7A503C02269F382F002C1A0D /* login_success.json */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = text.json; path = login_success.json; sourceTree = "<group>"; };
+		7A503C04269F494C002C1A0D /* login_invalid_params.json */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = text.json; path = login_invalid_params.json; sourceTree = "<group>"; };
+		7A503C06269F49F4002C1A0D /* login_wrong_credentials.json */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = text.json; path = login_wrong_credentials.json; sourceTree = "<group>"; };
 		7A683998269612EA00B2188A /* Response.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = Response.swift; sourceTree = "<group>"; };
 		7ACD05D62695C08A00557667 /* Constants.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = Constants.swift; sourceTree = "<group>"; };
 		7AEFAEEC26985A3400ED2C85 /* ACProgressView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ACProgressView.swift; sourceTree = "<group>"; };
@@ -260,6 +266,7 @@
 		7A40D5F42693A63A009B0BC4 /* AutoCat2Tests */ = {
 			isa = PBXGroup;
 			children = (
+				7A503C00269F370A002C1A0D /* Responses */,
 				7A40D60A2699A04F009B0BC4 /* Mocks */,
 				7A40D5F52693A63A009B0BC4 /* SettingsTests.swift */,
 				7AF552D82696E5C100578083 /* ApiTests.swift */,
@@ -293,6 +300,24 @@
 			path = Mocks;
 			sourceTree = "<group>";
 		};
+		7A503C00269F370A002C1A0D /* Responses */ = {
+			isa = PBXGroup;
+			children = (
+				7A503C01269F3797002C1A0D /* Login */,
+			);
+			path = Responses;
+			sourceTree = "<group>";
+		};
+		7A503C01269F3797002C1A0D /* Login */ = {
+			isa = PBXGroup;
+			children = (
+				7A503C06269F49F4002C1A0D /* login_wrong_credentials.json */,
+				7A503C04269F494C002C1A0D /* login_invalid_params.json */,
+				7A503C02269F382F002C1A0D /* login_success.json */,
+			);
+			path = Login;
+			sourceTree = "<group>";
+		};
 /* End PBXGroup section */
 
 /* Begin PBXNativeTarget section */
@@ -473,6 +498,9 @@
 			isa = PBXResourcesBuildPhase;
 			buildActionMask = 2147483647;
 			files = (
+				7A503C07269F49F4002C1A0D /* login_wrong_credentials.json in Resources */,
+				7A503C03269F382F002C1A0D /* login_success.json in Resources */,
+				7A503C05269F494C002C1A0D /* login_invalid_params.json in Resources */,
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 		};

AutoCat2Tests/ApiTests.swift

@@ -16,8 +16,21 @@ class ApiTests: XCTestCase {
         // Put teardown code here. This method is called after the invocation of each test method in the class.
     }
 
-    func testLogin() async throws {
+    func testLoginSuccess() async throws {
+        MockURLProtocol.responseType = MockResponseType.loginSuccess
         let user = try await self.api.login(email: "", password: "")
+        XCTAssertTrue(!user.token.isEmpty)
+    }
+    
+    func testLoginInvalidParams() async throws {
+        MockURLProtocol.responseType = MockResponseType.loginWrongCredentials
+        do {
+            _ = try await self.api.login(email: "", password: "")
+        } catch {
+            return
+        }
+        
+        XCTFail("Exception expected")
     }
 
 //    func testPerformanceExample() throws {

AutoCat2Tests/Mocks/MockURLProtocol.swift

@@ -1,7 +1,15 @@
 import Foundation
 
+enum MockResponseType: String {
+    case loginSuccess = "login_success"
+    case loginWrongCredentials = "login_wrong_credentials"
+    case
+}
+
 class MockURLProtocol: URLProtocol {
     
+    static var responseType: MockResponseType?
+  
     override class func canInit(with request: URLRequest) -> Bool {
         // To check if this protocol can handle the given request.
         return true
@@ -13,28 +21,22 @@ class MockURLProtocol: URLProtocol {
     }
 
     override func startLoading() {
-      guard let handler = MockURLProtocol.requestHandler else {
-        fatalError("Handler is unavailable.")
-      }
         
-      do {
+        guard let respType = MockURLProtocol.responseType else { return }
-        // 2. Call handler with received request and capture the tuple of response and data.
+        guard let jsonUrl = Bundle(for: type(of: self)).url(forResource: respType.rawValue, withExtension: "json") else { return }
-        let (response, data) = try handler(request)
+        guard let response = HTTPURLResponse(url: jsonUrl, statusCode: 200, httpVersion: "HTTP/2", headerFields: [:]) else { return }
+        
+        let data = try? Data(contentsOf: jsonUrl)
         
-        // 3. Send received response to the client.
         client?.urlProtocol(self, didReceive: response, cacheStoragePolicy: .notAllowed)
 
         if let data = data {
-          // 4. Send received data to the client.
           client?.urlProtocol(self, didLoad: data)
         }
 
-        // 5. Notify request has been finished.
         client?.urlProtocolDidFinishLoading(self)
-      } catch {
+
-        // 6. Notify received error.
+        //client?.urlProtocol(self, didFailWithError: error)
-        client?.urlProtocol(self, didFailWithError: error)
-      }
     }
 
     override func stopLoading() {

AutoCat2Tests/Responses/Login/login_invalid_params.json

@@ -0,0 +1,4 @@
+{
+    "success": false,
+    "error": "Invalid parameters"
+}

AutoCat2Tests/Responses/Login/login_success.json

@@ -0,0 +1,8 @@
+{
+    "success": true,
+    "data": {
+        "_id": "832c1bd4-5caa-4c9d-b24c-4c000cd8a793",
+        "email": "selim@fastmail.fm",
+        "token": "eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJlbWFpbCI6InNlbGltQGZhc3RtYWlsLmZtIiwiaWF0IjoxNjI2MjgwNDgxLCJleHAiOjE2NTc4MTY0ODF9.eU6wpacgCSnhM4EiyMY2lUptsfSfHz9guuvOsAw4X90"
+    }
+}

AutoCat2Tests/Responses/Login/login_wrong_credentials.json

@@ -0,0 +1,4 @@
+{
+    "success": false,
+    "error": "Incorrect email or password"
+}

Shared/Views/AuthView.swift

@@ -26,9 +26,7 @@ struct AuthView: View {
                         }
                     }
                 }
-                .alert(item: $alert) { id in
+                .alert(item: $alert, content: Alert.init)
-                    Alert(id)
-                }
                 Spacer()
             }
             .buttonStyle(.bordered)