Parametrized unit tests in Swift

Is there any way to use parameterized unit tests, similar to what you can achieve in .Net using NUnit framework.

[TestCase(12, 3, 4)]
[TestCase(12, 2, 6)]
[TestCase(12, 4, 3)]
public void DivideTest(int expectedResult, int a, int b)
{
  Assert.AreEqual(expectedResult, a / b);
}

Using this kind of tests (vs non-parameterized ones) can give you bigger back for buck by allowing you to avoid writing series of almost identical unit tests differing only by parameter values.

I am looking for either XCTest-based solution or some other means to achieve it. Optimal solution should report each test case (parameter set) as a separate unit test in Xcode, so is it clear whether all or only some of the tests cases failed.

The best way to handle parameterized testing is to use XCTContext.runActivity. This allows to create a new activity with some name that will help you identify exactly which of the iterations failed. So for your division scenario:

func testDivision() {
    let testCases = [
        (a: 12, b: 3, result: 4),
        (a: 12, b: 2, result: 6),
        (a: 12, b: 6, result: 1),
        (a: 12, b: 4, result: 3),
    ]
    for (a, b, result) in testCases {
        XCTContext.runActivity(named: "Testing dividing \(a) by \(b) to get result \(result)") { activity in
            XCTAssertEqual(result, a/b)
        }
    }
}

Note that after running the above test, case no. 1, 2 and 4 will succeed while case no. 3 will fail. You can view exactly which test activity failed and which of the assertions caused faiure in test report: