Describe "Update-FormatData" {

    BeforeAll {
        $path = Join-Path -Path $TestDrive -ChildPath "outputfile.ps1xml"
        $ps = [powershell]::Create()
        $iss = [system.management.automation.runspaces.initialsessionstate]::CreateDefault2()
        $rs = [system.management.automation.runspaces.runspacefactory]::CreateRunspace($iss)
        $rs.Open()
        $ps.Runspace = $rs
    }
    AfterAll {
        $rs.Close()
        $ps.Dispose()
    }
    Context "Validate Update-FormatData update correctly" {

	    It "Should not throw upon reloading previous formatting file" {
	        { Update-FormatData } | Should Not throw
	    }

	    It "Should validly load formatting data" {
	        Get-FormatData -typename System.Diagnostics.Process | Export-FormatData -Path $path
            $null = $ps.AddScript("Update-FormatData -prependPath $path")
            $ps.Invoke() 
            $ps.HadErrors | Should be $false
	    }
    }
}

Describe "Update-FormatData basic functionality" -Tags DRT{
    BeforeAll {
        $testfilename = "testfile.ps1xml"
        $testfile = Join-Path -Path $TestDrive -ChildPath $testfilename

		$xmlContent=@"
                <Types>
                    <Type>
                        <Name>AnyName</Name>
                        <Members>
                            <PropertySet>
                                <Name>PropertySetName</Name>
                                <ReferencedProperties>
                                    <Name>FirstName</Name> 
                                    <Name>LastName</Name> 
                                </ReferencedProperties>
                            </PropertySet>
                        </Members>
                    </Type>
                </Types>
"@
		$xmlContent > $testfile
    }
	
	It "Update-FormatData with WhatIf should work"{

        { Update-FormatData -Append $testfile -WhatIf } | Should Not Throw
        { Update-FormatData -Prepend $testfile -WhatIf } | Should Not Throw
	}
}