Support async calls with XCTAssertNoThrow, XCTAssertThrowsError, XCTExpectFailure...

[Gray-Wind]

Hello,

I'm trying to use XCTAssertNoThrow method with async function. I'm trying to use it as this:

        XCTAssertNoThrow {
            let item = try await map.getItem(with: "āž$*")
            XCTAssertNil(item)
        }

It turns out the callback is never run. In my case try returns with an error, which is thrown from getItem.

I ended up with this solution, which is suboptimal:

        var caughtError: Error?
        do {
            let item = try await map.getItem(with: "āž$*")
            XCTAssertNil(item)
        } catch {
            caughtError = error
        }
        XCTExpectFailure("test fails for the time being") {
            XCTAssertNil(caughtError)
        }

Side note: XCTExpectFailure doesn't run the async closure as well.