fix test

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

dsc/tests/dsc_extension_discover.tests.ps1

@@ -15,18 +15,31 @@ Describe 'Discover extension tests' {
     It 'Discover extensions' {
         $out = dsc extension list | ConvertFrom-Json
         $LASTEXITCODE | Should -Be 0
-        $out.Count | Should -Be 3 -Because ($out | Out-String)
-        $out[0].type | Should -Be 'Microsoft.DSC.Extension/Bicep'
-        $out[0].version | Should -Be '0.1.0'
-        $out[0].capabilities | Should -BeExactly @('import')
-        $out[0].manifest | Should -Not -BeNullOrEmpty
-        $out[1].type | Should -Be 'Microsoft.Windows.Appx/Discover'
-        $out[1].version | Should -Be '0.1.0'
-        $out[1].capabilities | Should -BeExactly @('discover')
-        $out[2].type | Should -BeExactly 'Test/Discover'
-        $out[2].version | Should -BeExactly '0.1.0'
-        $out[2].capabilities | Should -BeExactly @('discover')
-        $out[2].manifest | Should -Not -BeNullOrEmpty
+        if ($IsWindows) {
+            $out.Count | Should -Be 3 -Because ($out | Out-String)
+            $out[0].type | Should -Be 'Microsoft.DSC.Extension/Bicep'
+            $out[0].version | Should -Be '0.1.0'
+            $out[0].capabilities | Should -BeExactly @('import')
+            $out[0].manifest | Should -Not -BeNullOrEmpty
+            $out[1].type | Should -Be 'Microsoft.Windows.Appx/Discover'
+            $out[1].version | Should -Be '0.1.0'
+            $out[1].capabilities | Should -BeExactly @('discover')
+            $out[1].manifest | Should -Not -BeNullOrEmpty
+            $out[2].type | Should -BeExactly 'Test/Discover'
+            $out[2].version | Should -BeExactly '0.1.0'
+            $out[2].capabilities | Should -BeExactly @('discover')
+            $out[2].manifest | Should -Not -BeNullOrEmpty
+        } else {
+            $out.Count | Should -Be 2 -Because ($out | Out-String)
+            $out[0].type | Should -Be 'Microsoft.DSC.Extension/Bicep'
+            $out[0].version | Should -Be '0.1.0'
+            $out[0].capabilities | Should -BeExactly @('import')
+            $out[0].manifest | Should -Not -BeNullOrEmpty
+            $out[1].type | Should -BeExactly 'Test/Discover'
+            $out[1].version | Should -BeExactly '0.1.0'
+            $out[1].capabilities | Should -BeExactly @('discover')
+            $out[1].manifest | Should -Not -BeNullOrEmpty
+        }
     }
 
     It 'Filtering works for extension discovered resources' {