Fix win-vs-env.psm1 and pester-extensions.psm1 (#15)

pester-extensions.psm1

@@ -6,23 +6,28 @@ Pester extension that allows to run command and validate exit code
 #>
 
 function Get-CommandResult {
-    param (
+    Param (
         [Parameter(Mandatory=$true)]
         [string] $Command,
         [switch] $Multiline
     )
-    # Bash trick to suppress and show error output because some commands write to stderr (for example, "python --version")
-    $stdout = & bash -c "$Command 2>&1"
+    # CMD trick to suppress and show error output because some commands write to stderr (for example, "python --version")
+    If ($IsWindows) {
+        [string[]]$output = & $env:comspec /c "$Command 2>&1"
+    } else {
+        $output = & bash -c "$Command 2>&1"
+    }
     $exitCode = $LASTEXITCODE
+
     return @{
-        Output = If ($Multiline -eq $true) { $stdout } else { [string]$stdout }
+        Output = If ($Multiline -eq $true) { $output } else { [string]$output }
         ExitCode = $exitCode
     }
 }
 
 function ShouldReturnZeroExitCode {
     Param(
-        [String] $ActualValue,
+        [string] $ActualValue,
         [switch] $Negate,
         [string] $Because # This parameter is unused by we need it to match Pester asserts signature
     )

win-vs-env.psm1

@@ -3,7 +3,7 @@
 ###
 
 function Get-VSWhere {
-    $vswhere = "${env:ProgramFiles(x86)}\Microsoft Visual Studio\Installer\vswhere.exe";
+    $vswhere = "C:\Program Files (x86)\Microsoft Visual Studio\Installer\vswhere.exe"
 
     if (-not (Test-Path $vswhere )) {
         [Net.ServicePointManager]::SecurityProtocol = [Net.ServicePointManager]::SecurityProtocol -bor [Net.SecurityProtocolType]::Tls12
@@ -34,9 +34,11 @@ function Invoke-Environment
 }
 
 function Get-VSInstallationPath {
+    Write-Host "ProgramFiles(x86) - ${env:ProgramFiles(x86)}"
     $vswhere = Get-VSWhere
+    Write-Host "vswhere - $vswhere"
     $installationPath = & $vswhere -prerelease -legacy -latest -property installationPath
-
+    Write-Host "installationPath - $installationPath"
     return $installationPath
 }