Modified logic to not build full on non-Windows

Add additional verbose statements for debugging

appveyor.yml

@@ -32,12 +32,14 @@ install:
 
 build_script:
   - ps:   |
-      Set-Location $env:APPVEYOR_BUILD_FOLDER
-      ./build.ps1 -Documentation
-      if ( $env:PSVersion -eq "4" ) { # On WMF4: Also build for v3 to check it builds at least since we do not have a WMF3 image
-         ./build.ps1 -Configuration "$env:BuildConfiguration" -PSVersion 3 -Framework full
+      if ( $env:PowerShellEdition -eq 'WindowsPowerShell' ) {
+          Set-Location $env:APPVEYOR_BUILD_FOLDER
+          ./build.ps1 -Documentation
+          if ( $env:PSVersion -eq "4" ) { # On WMF4: Also build for v3 to check it builds at least since we do not have a WMF3 image
+             ./build.ps1 -Configuration "$env:BuildConfiguration" -PSVersion 3 -Framework full
+          }
+          ./build.ps1 -Configuration "$env:BuildConfiguration" -PSVersion "$env:PSVersion" -Framework full
       }
-      ./build.ps1 -Configuration "$env:BuildConfiguration" -PSVersion "$env:PSVersion" -Framework full
   - pwsh: |
       if ($env:PowerShellEdition -eq 'PowerShellCore') {
           Set-Location $env:APPVEYOR_BUILD_FOLDER
@@ -58,4 +60,4 @@ test_script:
 
 # Upload the project along with test results as a zip archive
 on_finish:
-  - ps: Import-Module "${env:BuildConfiguration}\tools\appveyor.psm1"; Invoke-AppveyorFinish
+  - ps: Import-Module "${env:APPVEYOR_BUILD_FOLDER}\tools\appveyor.psm1"; Invoke-AppveyorFinish

tools/appveyor.psm1

@@ -50,11 +50,15 @@ function Invoke-AppveyorTest {
         $CheckoutPath
     )
 
+    Write-Verbose -Verbose ("Running tests on PowerShell version " + $PSVersionTable.PSVersion)
+
     $modulePath = $env:PSModulePath.Split([System.IO.Path]::PathSeparator) | Where-Object { Test-Path $_} | Select-Object -First 1
     Copy-Item "${CheckoutPath}\out\PSScriptAnalyzer" "$modulePath\" -Recurse -Force
     $testResultsFile = ".\TestResults.xml"
     $testScripts = "${CheckoutPath}\Tests\Engine","${CheckoutPath}\Tests\Rules","${CheckoutPath}\Tests\Documentation"
     $testResults = Invoke-Pester -Script $testScripts -OutputFormat NUnitXml -OutputFile $testResultsFile -PassThru
+    $assemblyLocation = (Get-Command Invoke-ScriptAnalyer).ImplementingType.Assembly.Location
+    Write-Verbose -Verbose "Engine loaded from $assemblyLocation"
     (New-Object 'System.Net.WebClient').UploadFile("https://ci.appveyor.com/api/testresults/nunit/${env:APPVEYOR_JOB_ID}", (Resolve-Path $testResultsFile))
     if ($testResults.FailedCount -gt 0) {
         throw "$($testResults.FailedCount) tests failed."