Have you created or run unit tests for your code?

Yes, I have created and run unit tests for iOS applications using XCTest — the standard testing framework for iOS. Unit tests help verify individual components or functions of the application in isolation.

Example of a simple test for a function:

import XCTest
@testable import MyApp

class MyFunctionTests: XCTestCase {
    func testSum() {
        let result = sum(2, 3)
        XCTAssertEqual(result, 5)
    }
}

func sum(_ a: Int, _ b: Int) -> Int {
    return a + b
}

This approach allows for quick error detection and maintaining code quality.