fix case where no reboot is pending

Author: Steve Lee (POWERSHELL HE/HIM) (from Dev Box)

reboot_pending/tests/reboot_pending.tests.ps1

@@ -38,6 +38,10 @@ Describe 'reboot_pending resource tests' -Skip:(!$IsWindows -or !$isElevated) {
     It 'reboot_pending should have a reason' {
         $out = dsc resource get -r Microsoft.Windows/RebootPending | ConvertFrom-Json
         $LASTEXITCODE | Should -Be 0
-        $out.actualState.reason.count | Should -BeGreaterThan 0 -Because ($out | ConvertTo-Json -Depth 10 |Out-String)
+        if ($out.actualState.rebootPending) {
+            $out.actualState.reason.count | Should -BeGreaterThan 0 -Because ($out | ConvertTo-Json -Depth 10 |Out-String)
+        } else {
+            $out.actualState.reason | Should -BeNullOrEmpty -Because ($out | ConvertTo-Json -Depth 10 |Out-String)
+        }
     }
 }