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July 17, 2021 17:56
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| // | |
| // ViewModelTests.swift | |
| // UnitTestingTests | |
| // | |
| // Created by Maksim Vialykh on 7/17/21. | |
| // | |
| import XCTest | |
| @testable | |
| import UnitTesting | |
| class MockNetworkClient: NetworkClient { | |
| var mockedResult: Result<Data, Error> = .failure(NetworkError.noData) | |
| func send(request: URLRequest, result: @escaping (Result<Data, Error>) -> Void) { | |
| result(mockedResult) | |
| } | |
| } | |
| class MockRouter: Router { | |
| var openMainViewExpectation = XCTestExpectation(description: "openMainView expectation") | |
| func openMainView() { | |
| openMainViewExpectation.fulfill() | |
| } | |
| } | |
| class ViewModelTests: XCTestCase { | |
| let viewModelOnErrorExpectation = XCTestExpectation(description: "viewModel expectation") | |
| let timeout = 0.5 | |
| var viewModel: DefaultViewModel! | |
| var client: MockNetworkClient! | |
| var router: MockRouter! | |
| override func setUpWithError() throws { | |
| client = MockNetworkClient() | |
| router = MockRouter() | |
| viewModel = DefaultViewModel( | |
| client: client, | |
| router: router | |
| ) | |
| } | |
| override func tearDownWithError() throws { | |
| client = nil | |
| router = nil | |
| viewModel = nil | |
| } | |
| func testEmptyUsernameFail() throws { | |
| // Configure | |
| viewModel.onError = { [weak self] error in | |
| // Check | |
| XCTAssertEqual(error as? SignupError, SignupError.emptyUsername) | |
| self?.viewModelOnErrorExpectation.fulfill() | |
| } | |
| // Act | |
| viewModel.signup(username: nil, password: nil) | |
| // Wait | |
| wait(for: [viewModelOnErrorExpectation], timeout: timeout) | |
| } | |
| func testEmptyPasswordFail() throws { | |
| // Configure | |
| viewModel.onError = { [weak self] error in | |
| // Check | |
| XCTAssertEqual(error as? SignupError, SignupError.emptyPassword) | |
| self?.viewModelOnErrorExpectation.fulfill() | |
| } | |
| // Act | |
| viewModel.signup(username: "testUsername", password: nil) | |
| // Wait | |
| wait(for: [viewModelOnErrorExpectation], timeout: timeout) | |
| } | |
| func testNetworkFail() throws { | |
| // Configure | |
| let expectedError = NetworkError.noData | |
| client.mockedResult = .failure(expectedError) | |
| viewModel.onError = { [weak self] error in | |
| // Check | |
| XCTAssertEqual(error as? NetworkError, expectedError) | |
| self?.viewModelOnErrorExpectation.fulfill() | |
| } | |
| // Act | |
| viewModel.signup(username: "testUsername", password: "testPassword") | |
| // Wait | |
| wait(for: [viewModelOnErrorExpectation], timeout: timeout) | |
| } | |
| func testSignupSuccess() throws { | |
| // Configure | |
| client.mockedResult = .success(Data()) | |
| router.openMainViewExpectation.expectedFulfillmentCount = 1 | |
| // Act | |
| viewModel.signup(username: "testUsername", password: "testPassword") | |
| // Wait | |
| wait(for: [router.openMainViewExpectation], timeout: timeout) | |
| } | |
| } |
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