PowerShell/test/powershell/New-Item.Tests.ps1

function Clean-State
{
    if (Test-Path $FullyQualifiedFile)
    {
        Remove-Item $FullyQualifiedFile -Force
    }

    if (Test-Path $FullyQualifiedFolder)
    {
        Remove-Item $FullyQualifiedFolder -Recurse -Force
    }
}

Describe "New-Item" {
    $tmpDirectory         = "/tmp"
    $testfile             = "testfile.txt"
    $testfolder           = "newDirectory"
    $FullyQualifiedFile   = $tmpDirectory + "/" + $testfile
    $FullyQualifiedFolder = $tmpDirectory + "/" + $testfolder

    BeforeEach {
        Clean-State
    }

    It "should call the function without error" {
        { New-Item -Name $testfile -Path $tmpDirectory -ItemType file } | Should Not Throw
    }

    It "Should create a file without error" {
        New-Item -Name $testfile -Path $tmpDirectory -ItemType file

        Test-Path $FullyQualifiedFile | Should Be $true
    }

    It "Should create a folder without an error" {
        New-Item -Name newDirectory -Path $tmpDirectory -ItemType directory

        Test-Path $FullyQualifiedFolder | Should Be $true
    }

    It "Should create a file using the ni alias" {
        ni -Name $testfile -Path $tmpDirectory -ItemType file

        Test-Path $FullyQualifiedFile | Should Be $true
    }

    It "Should create a file using the Type alias instead of ItemType" {
        New-Item -Name $testfile -Path $tmpDirectory -Type file

        Test-Path $FullyQualifiedFile | Should Be $true
    }

    It "Should create a file with sample text inside the file using the Value switch" {
        $expected = "This is test string"
        New-Item -Name $testfile -Path $tmpDirectory -ItemType file -Value $expected

        Test-Path $FullyQualifiedFile | Should Be $true

        Get-Content $FullyQualifiedFile | Should Be $expected
    }

    It "Should not create a file when the Name switch is not used and only a directory specified" {
        #errorAction used because permissions issue in windows
        New-Item -Path $tmpDirectory -ItemType file -ErrorAction SilentlyContinue

        Test-Path $FullyQualifiedFile | Should Be $false

    }

    It "Should create a file when the Name switch is not used but a fully qualified path is specified" {
        New-Item -Path $FullyQualifiedFile -ItemType file 

        Test-Path $FullyQualifiedFile | Should Be $true
    }

    It "Should be able to create a multiple items in different directories" {
        $FullyQualifiedFile2 = $tmpDirectory + "/" + "test2.txt"
        New-Item -ItemType file -Path $FullyQualifiedFile, $FullyQualifiedFile2

        Test-Path $FullyQualifiedFile  | Should Be $true
        Test-Path $FullyQualifiedFile2 | Should Be $true

        Remove-Item $FullyQualifiedFile2
    }

    It "Should be able to call the whatif switch without error" {
       { New-Item -Name testfile.txt -Path /tmp -ItemType file -WhatIf } | Should Not Throw
    }

    It "Should not create a new file when the whatif switch is used" { 
        New-Item -Name $testfile -Path $tmpDirectory -ItemType file -WhatIf

        Test-Path $FullyQualifiedFile | Should Be $false 
    }
}