Add new 1.3 query tests

Author: abnegate

tests/languages/dotnet/Tests.cs

@@ -113,6 +113,14 @@ public async Task Test1()
             TestContext.WriteLine(Query.LessThan("releasedYear", 1990));
             TestContext.WriteLine(Query.GreaterThan("releasedYear", 1990));
             TestContext.WriteLine(Query.Search("name", "john"));
+            TestContext.WriteLine(Query.IsNull("name"));
+            TestContext.WriteLine(Query.IsNotNull("name"));
+            TestContext.WriteLine(Query.Between("age", 50, 100));
+            TestContext.WriteLine(Query.Between("age", 50.5, 100.5));
+            TestContext.WriteLine(Query.Between("name", "Anna", "Brad"));
+            TestContext.WriteLine(Query.StartsWith("name", "Ann"));
+            TestContext.WriteLine(Query.EndsWith("name", "nne"));
+            TestContext.WriteLine(Query.Select(new List<string> { "name", "age" }));
             TestContext.WriteLine(Query.OrderAsc("title"));
             TestContext.WriteLine(Query.OrderDesc("title"));
             TestContext.WriteLine(Query.CursorAfter("my_movie_id"));