- fixed unit test

git-svn-id: https://svn.apache.org/repos/asf/incubator/chemistry/dotcmis/trunk@1071057 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/DotCMISUnitTest/SmokeTest.cs b/DotCMISUnitTest/SmokeTest.cs
index 564daf1..5bb4721 100644
--- a/DotCMISUnitTest/SmokeTest.cs
+++ b/DotCMISUnitTest/SmokeTest.cs
@@ -58,7 +58,7 @@
             Assert.AreEqual("cmis:document", documentType.Id);

             Assert.AreEqual(BaseTypeId.CmisDocument, documentType.BaseTypeId);

             Assert.True(documentType.IsBaseType);

-            Assert.Null(documentType.ParentTypeId);

+            Assert.IsNullOrEmpty(documentType.ParentTypeId);

             Assert.NotNull(documentType.PropertyDefintions);

             Assert.True(documentType.PropertyDefintions.Count >= 9);

 

@@ -68,7 +68,7 @@
             Assert.AreEqual("cmis:folder", folderType.Id);

             Assert.AreEqual(BaseTypeId.CmisFolder, folderType.BaseTypeId);

             Assert.True(folderType.IsBaseType);

-            Assert.Null(folderType.ParentTypeId);

+            Assert.IsNullOrEmpty(folderType.ParentTypeId);

             Assert.NotNull(folderType.PropertyDefintions);

             Assert.True(folderType.PropertyDefintions.Count >= 9);

 

@@ -85,7 +85,7 @@
                 Assert.NotNull(type);

                 Assert.NotNull(type.Id);

                 Assert.True(type.IsBaseType);

-                Assert.Null(type.ParentTypeId);

+                Assert.IsNullOrEmpty(type.ParentTypeId);

                 Assert.NotNull(type.PropertyDefintions);

 

                 Session.Clear();

@@ -115,7 +115,7 @@
                 Assert.NotNull(type);

                 Assert.NotNull(type.Id);

                 Assert.True(type.IsBaseType);

-                Assert.Null(type.ParentTypeId);

+                Assert.IsNullOrEmpty(type.ParentTypeId);

                 Assert.NotNull(type.PropertyDefintions);

 

                 Session.Clear();