如何對必須成對出現的函數進行單元測試？

Question

常常我必須發生在對諸如

//Example 
startSomething() 
... 
stopSomething() 

//Example 
openSomething() 
... 
closeSomething() 

而單元測試startSomething()和openSomething()是容易的，因爲它們不需要現有條件/設置的某些功能，應該怎麼單元測試它們的對應需要在現有被稱爲？

Answer 1

大多數單元測試框架都具有安裝測試，這些安裝測試在測試用例之前/之後和/或每個測試用例中調用。以NUnit爲例：

[TestFixture] 
public class MyTest 
{ 
    [OneTimeSetup] 
    public void GeneralSetup() 
    { ... } //Called before starts all test cases 

    [OneTimeTearDown] 
    public void GeneralTearDown() 
    { ... } //Called after all test cases are finished 

    [Setup] 
    public void Setup() 
    { ... } //Called before each test case 

    [TearDown] 
    public void TearDown() 
    { ... } //Called after each test case 

    [Test] 
    public void Test1() 
    { ... } 

    [Test] 
    public void Test2() 
    { ... } 
}