en-US/about_TestDrive.help.txt

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TOPIC
    TestDrive

SYNOPSIS
    A PSDrive for file activity limited to the scope of a singe Describe or 
    Context block.

DESCRIPTION    
    A test may need to work with file operations and validate certain tyes of 
    file activities. It is usually desirable not to perform file activity tests 
    that will produce side effects outside of an individual test. Pester 
    creates a PSDrive inside the user's temporary drive that is accesible via a     names PSDrive TestDrive:. Pester will remove this drive after the test     completes. You may use this drive to isolate the file operations of your     test to a temporary store. EXAMPLE     function Add-Footer($path, $footer) {      Add-Content $path -Value $footer     }     Describe "Add-Footer" {      $testPath="TestDrive:\test.txt"      Set-Content $testPath -value "my test text."      Add-Footer $testPath "-Footer"      $result = Get-Content $testPath      It "adds a footer" {      (-join $result).Should.Be("my test text.-Footer")      }     }          When this test completes, the contents of the TestDrive PSDrive will     be removed. SEE ALSO     Context     Describe     It     about_Should