PowerShell/test/powershell/Get-PSDrive.Tests.ps1

Describe "Get-PSDrive" {
    $isWindows = [System.Runtime.InteropServices.RuntimeInformation]::IsOSPlatform([System.Runtime.InteropServices.OSPlatform]::Windows) 

    It "Should not throw" {
        Get-PSDrive | Should Not BeNullOrEmpty
    }

    It "Should have a name and a length property" {
        (Get-PSDrive).Name        | Should Not BeNullOrEmpty
        (Get-PSDrive).Root.Length | Should Not BeLessThan 1
    }

    It "Should be able to be called with the gdr alias" {
        { gdr } | Should Not Throw

        gdr | Should Not BeNullOrEmpty
    }

    It "Should be the same output between Get-PSDrive and gdr" {
        $alias  = gdr
        $actual = Get-PSDrive

        $alias | Should Be $actual
    }

    It "Should return drive info"{
        (Get-PSDrive Env).Name        | Should Be Env
        (Get-PSDrive Cert).Root       | Should Be \

        if ($isWindows)
        {
            (Get-PSDrive C).Provider.Name | Should Be FileSystem
        }
        else
        {
            (Get-PSDrive /).Provider.Name | Should Be FileSystem
        }
    }

    It "Should be able to access a drive using the PSProvider switch" {
        (Get-PSDrive -PSProvider FileSystem).Name.Length | Should BeGreaterThan 0
    }

    It "Should return true that a drive that does not exist"{
        !(Get-PSDrive fake -ErrorAction SilentlyContinue) | Should Be $True
        Get-PSDrive fake -ErrorAction SilentlyContinue    | Should BeNullOrEmpty
    }
}