address some review feedback

test/powershell/Common/Test.Helpers.psm1

@@ -22,4 +22,28 @@ function Wait-CompleteExecution
     }
     return $true
 }
-export-modulemember -function Wait-CompleteExecution
+
+function Test-IsElevated
+{
+    $IsElevated = $False
+    if ( $IsWindows ) {
+        # on Windows we can determine whether we're executing in an
+        # elevated context
+        $identity = [System.Security.Principal.WindowsIdentity]::GetCurrent()
+        $windowsPrincipal = new-object 'Security.Principal.WindowsPrincipal' $identity
+        if ($windowsPrincipal.IsInRole("Administrators") -eq 1) 
+        { 
+            $IsElevated = $true 
+        } 
+    }
+    else {
+        # on Linux, tests run via sudo will generally report "root" for whoami
+        if ( (whoami) -match "root" ) {
+            $IsElevated = $true
+        }
+    }
+    return $IsElevated
+}
+
+export-modulemember -function Wait-CompleteExecution,Test-IsElevated
+

test/powershell/Language/Scripting/Debugging/Debugging.Tests.ps1

@@ -12,9 +12,8 @@ $script2 = @'
 "line 3"
 '@
 
-$root = git rev-parse --show-toplevel
-$pestertestroot = join-path $root test/powershell
-$common = join-path $pestertestroot Common
+$testroot = resolve-path (join-path $psscriptroot ../../..)
+$common = join-path $testroot Common
 $helperModule = join-path $common Test.Helpers.psm1
 
 Describe "Breakpoints when set should be hit" -tag "CI" {

test/powershell/Modules/Microsoft.PowerShell.Utility/Set-Date.Tests.ps1

@@ -3,19 +3,8 @@
 # determine whether we're elevated
 Describe "Set-Date" -Tag "CI" {
     BeforeAll {
-        if ( $IsWindows ) {
-            $identity = [System.Security.Principal.WindowsIdentity]::GetCurrent()
-            $windowsPrincipal = new-object 'Security.Principal.WindowsPrincipal' $identity
-            if ($windowsPrincipal.IsInRole("Administrators") -eq 1) { $IsElevated = $true } else { $IsElevated = $false }
-        }
-        else {
-            if ( (whoami) -match "root" ) {
-                $IsElevated = $true
-            }
-            else {
-                $IsElevated = $false
-            }
-        }
+        Import-Module (join-path $psscriptroot "../../Common/Test.Helpers.psm1")
+        $IsElevated = Test-IsElevated
     }
     It "Set-Date should be able to set the date in an elevated context" -Skip:(! $IsElevated) {
         { get-date | set-date } | Should not throw