ServiceManagerTests.swift

gistfile1.txt

import XCTest

@testable import DeliveryAppChallenge

final class ServiceManagerTests: XCTestCase {

	// MARK: Subject under test
	var sut: APIService!

	// MARK: Test setup
	override func setUp() {
		super.setUp()
		self.sut = APIService()
	}

	override func tearDown() {
		super.tearDown()
		self.sut = nil
		URLProtocolMock.urlRequests.removeAll()
	}

	func test_get_whenFetchRestaurants_shouldReturnSuccess() {
		// Given
		let endpoint = Router.fetchRestaurants
		let dataMock = dataMock()
		let successCompletion = createResquestCompletionMock(
			endpoint: endpoint,
			dataMock: dataMock,
			statusCode: 200,
			error: nil
		)
		let mockSession = URLProtocolMock.mockSession(
			with: endpoint.getRequest,
			completionMock: successCompletion
		)
		self.sut = APIService(mockSession)

		let expectation = expectation(description: "success")

		// When
		sut.get(
			request: endpoint.getRequest,
			of: [RestaurantsListModel].self,
			completion: { result in
				// Then
				switch result {
				case .failure:
					XCTFail()
				case .success(let model):
					expectation.fulfill()

					if let first = try? XCTUnwrap(model.first) {
						XCTAssertEqual(first.name, dataMock[0].name)
						XCTAssertEqual(first.category, dataMock[0].category)
						XCTAssertEqual(first.deliveryTime.min, dataMock[0].deliveryTime.min)
						XCTAssertEqual(first.deliveryTime.max, dataMock[0].deliveryTime.max)
					} else {
						XCTFail()
					}
				}
				
			}
		)

		wait(for: [expectation], timeout: 1)
	}