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

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

@@ -1,6 +1,6 @@
 Describe "Export-Csv" -Tags "CI" {
     $testObject = @("test","object","array")
-    $testCsv = "output.csv"
+    $testCsv = Join-Path -Path $TestDrive -ChildPath "output.csv"
 
     AfterEach {
 	Remove-Item $testCsv -Force -ErrorAction SilentlyContinue
@@ -51,7 +51,7 @@ Describe "Export-Csv" -Tags "CI" {
     It "Should have the same information when using the alias vs the cmdlet" {
 	$testObject | Export-Csv -Path $testCsv
 
-	$aliasObject = "alias.csv"
+	$aliasObject = Join-Path -Path $TestDrive -ChildPath "alias.csv"
 
 	$testObject | epcsv -Path $aliasObject
 

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 "<"
+	    }
     }
 }

test/powershell/Modules/Microsoft.PowerShell.Utility/Out-File.Tests.ps1

@@ -1,6 +1,6 @@
 Describe "Out-File DRT Unit Tests" -Tags "CI" {
     It "Should be able to write the contens into a file with -pspath" {
-        $tempFile = "ExposeBug928965"
+        $tempFile = Join-Path -Path $TestDrive -ChildPath "ExposeBug928965"
         { 1 | Out-File -PSPath $tempFile } | Should Not Throw
         $fileContents = Get-Content $tempFile
         $fileContents | Should be 1
@@ -8,7 +8,7 @@ Describe "Out-File DRT Unit Tests" -Tags "CI" {
     }
 
     It "Should be able to write the contens into a file with -pspath" {
-        $tempFile = "outfileAppendTest.txt"
+        $tempFile = Join-Path -Path $TestDrive -ChildPath "outfileAppendTest.txt"
         { 'This is first line.' | out-file $tempFile } | Should Not Throw
         { 'This is second line.' | out-file -append $tempFile } | Should Not Throw
         $tempFile |Should Contain "first"

test/powershell/Modules/Microsoft.PowerShell.Utility/Write-Stream.Tests.ps1

@@ -1,5 +1,5 @@
 Describe "Stream writer tests" -Tags "CI" {
-    $targetfile = "writeoutput.txt"
+    $targetfile = Join-Path -Path $TestDrive -ChildPath "writeoutput.txt"
 
     # A custom function is defined here do handle the debug stream dealing with the confirm prompt
     # that would normally