Sample iOS Integration Test: Test When Model performs work over the Network

Sample iOS Integration Test: Test When Model performs work over the Network

// Example of an asynchronous unit test 

func testUserLogin() {
        
        let readyExpectation = expectationWithDescription("ready")
        
        User.loginWithUsername("kris@bla.org", password: "blah") { (isSuccess) -> Void in
            
            let expectedLoginSuccessStatus = true
            let actualLoginSuccessStatus = isSuccess
            
            XCTAssertEqual(expectedLoginSuccessStatus, actualLoginSuccessStatus, "Failed to login and provide the expected login status result")
            
            readyExpectation.fulfill()
        }
        
        waitForExpectationsWithTimeout(5) { (error) -> Void in
        
            XCTAssertNil(error, "Error when performing asynchronous unit test - testUserLogin")
        }
    }
    
    
    // Other examples of fetching data from network with well formed URL and mal-formed URL 
    
    func testCanFetchData() {
        
        let readyExpectation = expectationWithDescription("ready")
        
        let someService = SomeService()
        
        let url = "http://goodurl.com?id=12345" //well formed URL
        someService.fetchData(url) { (data, error) -> Void in
            
            XCTAssertNotNil(data)
            XCTAssertNil(error)
            
            readyExpectation.fulfill()
        }
        
        waitForExpectationsWithTimeout(5) { (error) -> Void in
            
            XCTAssertNil(error)
        }
    }
    
    func testCanHandleMalformedURLrWhenFetchingData() {
        
        let readyExpectation = expectationWithDescription("ready")
        
        let someService = SomeService()
        
        let badURL = "\BLA&*()BLABLA" // a mal-formed URL
        someService.fetchData(badURL) { (data, error) -> Void in
            
            XCTAssertNil(data)
            XCTAssertNotNil(error)
            
            readyExpectation.fulfill()
        }
        
        waitForExpectationsWithTimeout(5) { (error) -> Void in
            
            XCTAssertNil(error)
        }
    }
}