Fix tests that were broken by the sxs module path change. Also fix some unreliable tests.

test/powershell/Modules/Microsoft.PowerShell.Utility/Export-FormatData.Tests.ps1

@@ -16,26 +16,29 @@ Describe "Export-FormatData DRT Unit Tests" -Tags "CI" {
 
 Describe "Export-FormatData" -Tags "CI" {
 
+    $testOutput = Join-Path -Path $TestDrive -ChildPath "outputfile"
+
+    AfterEach {
+        Remove-Item $testOutput -Force -ErrorAction SilentlyContinue
+    }
+
     Context "Check Export-FormatData can be called validly." {
-	It "Should be able to be called without error" {
-	    { Get-FormatData | Export-FormatData -Path "outputfile" } | Should Not Throw
-	    Remove-Item "outputfile" -Force -ErrorAction SilentlyContinue
-	}
+	    It "Should be able to be called without error" {
+	        { Get-FormatData | Export-FormatData -Path $testOutput } | Should Not Throw
+	    }
     }
 
     Context "Check that the output is in the correct format" {
-	It "Should not return an empty xml file" {
-	    Get-FormatData | Export-FormatData -Path "outputfile"
-	    $piped = Get-Content "outputfile"
-	    $piped | Should Not Be ""
-	    Remove-Item "outputfile" -Force -ErrorAction SilentlyContinue
-	}
+	    It "Should not return an empty xml file" {
+	        Get-FormatData | Export-FormatData -Path $testOutput
+	        $piped = Get-Content $testOutput
+	        $piped | Should Not Be ""
+	    }
 
-	It "Should have a valid xml tag at the start of the file" {
-	    Get-FormatData | Export-FormatData -Path "outputfile"
-	    $piped = Get-Content "outputfile"
-	    $piped[0] | Should Be "<"
-	    Remove-Item "outputfile" -Force -ErrorAction SilentlyContinue
-	}
+	    It "Should have a valid xml tag at the start of the file" {
+	        Get-FormatData | Export-FormatData -Path $testOutput
+	        $piped = Get-Content $testOutput
+	        $piped[0] | Should Be "<"
+	    }
     }
 }