Splitting pagination tests

Author: StanleyGoldman

Octokit.GraphQL.Core.UnitTests/ExpressionRewriterAssertions.cs

@@ -52,7 +52,7 @@ public static string ReplaceSubqueryPlaceholders(string expectedString, params s
         {
             foreach (var subqueryPlaceholderReplacement in subqueryPlaceholderReplacements)
             {
-                var regex = new Regex("PagingTests.subqueryPlaceholder");
+                var regex = new Regex("SubqueryPlaceholder.placeholder");
                 expectedString = regex.Replace(expectedString, subqueryPlaceholderReplacement, 1);
             }