Add remaining test cases from track one DNS SDK to track two

sdk/dns/Azure.ResourceManager.Dns/tests/Azure.ResourceManager.Dns.Tests.csproj

@@ -1,6 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <TestHelperProjects>Resources201705;</TestHelperProjects>
+     <NoWarn>$(NoWarn);SA1649</NoWarn>
   </PropertyGroup>
   <ItemGroup>
     <ProjectReference Include="$(AzureCoreTestFramework)" />

sdk/dns/Azure.ResourceManager.Dns/tests/Helper.cs

@@ -22,25 +22,20 @@ public static bool AreEqualPrereq(
             Azure.ResourceManager.Dns.Models.Resource second,
             bool ignoreEtag = false)
         {
-            if (first == null && second == null)
-            {
-                return true;
-            }
-            else if (first == null || second == null)
+
+            if (first == null || second == null)
             {
                 return false;
             }
 
-            if (first.Location != second.Location
-                || first.Name != second.Name)
+            if (first.Location.ToLower() != second.Location.ToLower())
             {
                 return false;
             }
 
-            if (first.Tags != null || second.Tags != null)
+            if (first.Tags != null && second.Tags != null)
             {
-                if (first.Tags == null || second.Tags == null ||
-                    first.Tags.Count != second.Tags.Count)
+                if (first.Tags.Count != second.Tags.Count)
                 {
                     return false;
                 }
@@ -54,6 +49,9 @@ public static bool AreEqualPrereq(
                     }
                 }
             }
+            else{
+                return false;
+            }
 
             return true;
         }