I wish to get the return of my XCTAssertXXX calls in order to display such result/message on my App/POC's screen.
Is it possible in some way?
Summary: Imagine a simple App with a button "Run Tests" and it will execute my XCTestCases and bring me back the result of each one. Then I'd use these returns to display on screen after all tests execution.
I know that it is now common approach, guys. But, is it possible?
There are a few ways you may be able to achieve this:
Individual Test Case
For an individual test case, you could override the record(_ issue: XCTIssue) which will be called for any assertion failures and should include its contextual information.
For example:
class MyCustomTests: XCTestCase {
// MARK: - Tests
func testExample() throws {
XCTAssertTrue(false, "some failing assertion")
XCTAssertEqual("A", "B", "another failing assertion")
}
// MARK: - Overrides
override func record(_ issue: XCTIssue) {
// process issues ...
super.record(issue)
}
}
References:
XCTestObservation
A more flexible approach that could scale to multiple test cases would be to leverage XCTestObservation to observe all tests including occurrences of issues.
For example:
class MyTestObserver: NSObject, XCTestObservation {
func testCase(_ testCase: XCTestCase, didRecord issue: XCTIssue) {
// process issue ...
}
}
To get this wired up in a test bundle you could define a principle class (via setting NSPrincipleClass in the Info plist) which would orchestrate the observation.
<key>NSPrincipalClass</key>
<string>MyCustomTestsManager</string>
@objc(MyCustomTestsManager)
class MyCustomTestsManager: NSObject {
private let observer = MyTestObserver()
override init() {
super.init()
XCTestObservationCenter.shared.addTestObserver(observer)
}
}
References: