/*

    Copyright (C) 2016 Apple Inc. All Rights Reserved.

    See LICENSE.txt for this sample’s licensing information

    Abstract:

    Provides a generic implementation of testing a value for value semantics.

*/

import XCTest

/**

    A generic implementation that allows you to test whether or not your value

    has value semantics.

*/

func testValueSemantics<Value: Equatable>(initial: Value, mutations: (inout Value) -> Void) {

    var copy = initial

    XCTAssertEqual(initial, copy)

    mutations(&copy)

    XCTAssertNotEqual(initial, copy)

}