Sample iOS Unit Tests: Working with a ViewConroller that uses CoreLocation

Sample iOS Unit Tests: Working with a ViewConroller that uses CoreLocation

import XCTest
import CoreLocation
@testable import MyProject

class ViewControllerTest: XCTestCase {

    var systemUnderTest: ViewController!
    
    override func setUp() {
        
        super.setUp()
        
        //get the storyboard the ViewController under test is inside
        let storyboard: UIStoryboard = UIStoryboard(name: "Main_iPhone", bundle: nil)
        
        //get the ViewController we want to test from the storyboard (note the identifier is the id explicitly set in the identity inspector)
        systemUnderTest = storyboard.instantiateViewControllerWithIdentifier("ViewController") as! ViewController
        
        //load view hierarchy
        _ = systemUnderTest.view
    }
    
    override func tearDown() {
        
        // Put teardown code here. This method is called after the invocation of each test method in the class.
        super.tearDown()
    }
    
    func testSUT_CanBeInstantiated() {
        
        XCTAssertNotNil(systemUnderTest)
    }
    
    // MARK: - core location
    
    func testSUT_ConformsToCLLocationManagerProtocol() {
    
        XCTAssert(systemUnderTest.conformsToProtocol(CLLocationManagerDelegate))
        XCTAssertTrue(systemUnderTest.respondsToSelector(#selector(systemUnderTest.locationManager(_:didUpdateLocations:))))
        XCTAssertTrue(systemUnderTest.respondsToSelector(#selector(systemUnderTest.locationManager(_:didFailWithError:))))
    }
}