Unit testing in Swift

The class to test

Import Cocoaclass simpleinterest:nsobject{    func calculate (loanamount:double, var interestrate:double,years:int) ->double    {        interestrate = interestrate/100.0 let        interest = Double (years) * InterestRate * LOANAMOUNT
   return Loanamount + Interest    }        func Calculateadd (num1:double,num2:double)->double    {        return NUM1 + num2    }}

　　

Test code:

Import xctestimport cocoa@testable Import testdemoclass testdemotests:xctestcase {var mysimpleinterestcaculator: Simpleinterest = Simpleinterest () override Func SetUp () {Super.setup () print ("Starting t                EST ") Print (" This method is called before using each test method in this class, you can insert the corresponding global setting code here ")} override func TearDown () {            Print ("End Test") print ("This method is called after using each test method in this class, where you can insert global configuration code-such as cleanup settings, etc.") Super.teardown ()} Func Testadd () {Let result = Mysimpleinterestcaculator.calculateadd (NUM2:12)//accuracy represents fine Accuracy xctassertequalwithaccuracy (result, 24.01, accuracy:0.1, "error:unexpected result->\ (Result)")} F        UNC Testsimpleinterest () {Let result = Mysimpleinterestcaculator.calculate (25_000, interestrate:0.08, Years:10) Xctassertequalwithaccuracy (result, 25200, accuracy:0.1, "error:unexpected result->\ (Result)")}}

The test button on the left side of the stand-alone test!

Tests that are always running:

Unit tests must run to work if you want to run the tests every time you run the application?

Click Project--> Target--Build phases----Target Dependencies:add dependency

At this point, the test is specified as a dependency of the application, so the test is compiled and executed the first time the application is compiled! If a test does not pass, the application will not be compiled

Unit testing in Swift