Added pester tests for Tee-Object

src/pester-tests/Tee-Object.Tests.ps1

@@ -0,0 +1,35 @@
+$here = Split-Path -Parent $MyInvocation.MyCommand.Path
+
+Describe "Tee-Object" {
+
+    Context "Validate Tee-Object is correctly forking output" {
+
+        It "Should return the output to the screen and to the variable" {
+            $teefile = "$here/assets/testfile.txt"
+	    echo teeobjecttest1    |    Tee-Object -variable teeresults
+	    $teeresults                 |     Should Be "teeobjecttest1"
+	    Remove-Item $teefile -ErrorAction SilentlyContinue
+	}
+
+        It "Should return the output to the screen and to the variable from the alias" {
+	     $teefile = "$here/assets/testfile.txt"
+            echo teeobjecttest2    |    tee -variable teeresults
+            $teeresults                 |    Should Be "teeobjecttest2"
+	     Remove-Item $teefile -ErrorAction SilentlyContinue
+	 }
+
+         It "Should tee the output to a file" {
+	     $teefile = "$here/assets/testfile.txt"
+	     echo teeobjecttest3  | Tee-Object $teefile
+	     Get-Content $teefile | Should Be "teeobjecttest3"
+	     Remove-Item $teefile -ErrorAction SilentlyContinue
+	 }
+
+         It "Should tee the output to a file using the alias" {
+	     $teefile = "$here/assets/testfile.txt"
+	     echo teeobjecttest4  | tee $teefile
+	     Get-Content $teefile | Should Be "teeobjecttest4"
+	     Remove-item $teefile -ErrorAction SilentlyContinue
+	 }      
+    }
+}