Add Unit Test for Write-Host

test/powershell/Write-Debug.Tests.ps1

@@ -13,7 +13,7 @@
         )
 
         $PSBoundParameters.GetEnumerator() | ForEach {
-        Write-Verbose $_
+            Write-Verbose $_
         }
         Write-Verbose "DebugPreference: $DebugPreference"
 

test/powershell/Write-Host.Tests.ps1

@@ -0,0 +1,26 @@
+Describe "Write-Host DRT Unit Tests" -Tags DRT{ 
+    $testData = @(
+        @{ Name = 'NoNewline';Command = "Write-Host a,b -Separator ',' -ForegroundColor Yellow -BackgroundColor DarkBlue -NoNewline"; returnValue = "a,b" }
+        @{ Name = 'Separator';Command = "Write-Host a,b,c -Separator '+'"; returnValue = "a+b+c" }
+    )
+   
+    It "write-Host works with '<Name>' switch" -TestCases $testData { 
+        param($Command, $returnValue) 
+
+        $tempFile = [io.path]::getTempFIleName() 
+        $script = Join-Path $TestDrive -ChildPath writeHost.ps1           
+        
+        $Command > $script
+
+        if($IsLinux)
+        {
+            powershell $script > $tempFile
+        }
+        else
+        {
+            powershell.exe $script > $tempFile
+        }
+        $content = Get-Content $tempFile
+        $content | Should Be $returnValue
+    }
+}