Enum case matching

TestEnum.swift

enum Test {
    case One
    case Two
    
    var testDot: String {
        switch self {
        case .One:
            return "One"
        case .Two:
            return "Two"
        }
    }
    
    var testLetDot: String {
        switch self {
        case let .One:
            return "One"
        case let .Two:
            return "Two"
        }
    }
    
    var testLet: String {
        switch self {
        case let One:
            return "One"
        case let Two:
            return "Two"
        }
    }
    
    var testNone: String {
        switch self {
        case One:
            return "One"
        case Two:
            return "Two"
        }
    }
}
    
let two = Test.Two
two.testDot         // Two
two.testLetDot      // Two
two.testLet         // One
two.testNone        // Two