Add Export-Clixml and Import-Clixml Pester Test

test/powershell/XMLCommand.Tests.ps1

@@ -0,0 +1,52 @@
+Describe "XmlCommand DRT basic functionality Tests" -Tags DRT{
+
+	BeforeAll {
+		if(-not ([System.Management.Automation.PSTypeName]'IsHiddenTestType').Type)
+		{
+			Add-Type -TypeDefinition @"
+		public class IsHiddenTestType
+        {
+            public IsHiddenTestType()
+            {
+                Property1 = 1;
+                Property2 = "some string";
+            }
+
+            public IsHiddenTestType(int val, string data)
+            {
+                Property1 = val;
+                Property2 = data;
+            }
+
+            public int Property1;
+            public string Property2;
+        }
+"@
+		}
+    }
+
+	BeforeEach {
+		$testfile = Join-Path -Path $TestDrive -ChildPath "clixml-directive.xml"
+	}
+	
+    AfterEach {
+		rm $testfile
+    }
+
+    It "Import with CliXml directive should work" -Skip:$IsOSX{
+		Get-Process | Export-Clixml $testfile
+		$results = Import-clixml $testfile
+		$results.Count | Should BeGreaterThan 0
+		$results[0].ToString().Contains("System.Diagnostics.Process") | Should Be $true
+    }
+	
+	It "Import with Rehydration should work" -Skip:$IsOSX{
+		$property1 = 256
+		$property2 = "abcdef"
+		$isHiddenTestType = [IsHiddenTestType]::New($property1,$property2)
+		$isHiddenTestType | Export-Clixml $testfile
+		$results = Import-clixml $testfile
+		$results.Property1 | Should Be $property1
+		$results.Property2 | Should Be $property2
+    }
+}