Issue-34 formatter of query string builder (#35)

* Update QueryOf{T}.cs

issue-34 - Updated the Query to pass the options.Formatter to the QueryStringBuilder

* Update CustomQueryStringBuilderTests.cs

issue-34 - added the Test for the Argument objects formatting verification

Author: VictoriaKalinichenko

src/GraphQL.Query.Builder/QueryOf{T}.cs

@@ -47,6 +47,10 @@ public Query(string name, QueryOptions options)
         {
             this.QueryStringBuilder = options.QueryStringBuilderFactory();
         }
+        else if (options?.Formatter != null)
+        {
+            this.QueryStringBuilder = new QueryStringBuilder(options.Formatter);
+        }
     }
 
     /// <summary>Sets the query alias name.</summary>

tests/GraphQL.Query.Builder.UnitTests/CustomQueryStringBuilderTests.cs

@@ -59,4 +59,25 @@ private static string ToConstantCase(string name)
             return result;
         }
     }
+
+    [Fact]
+    public void TestArgumentsWithCamelCasePropertyNameFormatter()
+    {
+        QueryOptions options = new()
+        {
+            Formatter = CamelCasePropertyNameFormatter.Format
+        };
+        string query = new Query<object>("something", options)
+            .AddArguments(new
+            {
+                SomeObject = new
+                {
+                    InnerObjectField = "camel case"
+                }
+            })
+            .AddField("some")
+            .Build();
+
+        Assert.Equal("something(someObject:{innerObjectField:\"camel case\"}){some}", query);
+    }
 }