Add test for trace inheritance bug

Author: rmosolgo

spec/graphql/tracing/legacy_trace_spec.rb

@@ -6,7 +6,7 @@
     custom_tracer = Module.new do
       def self.trace(key, data)
         if key == "execute_query"
-          data[:query].context[:trace_ran] = true
+          data[:query].context[:tracer_ran] = true
         end
         yield
       end
@@ -29,9 +29,53 @@ def int
 
 
     res1 = parent_schema.execute("{ int }")
-    assert_equal true, res1.context[:trace_ran]
+    assert_equal true, res1.context[:tracer_ran]
 
     res2 = child_schema.execute("{ int }")
-    assert_equal true, res2.context[:trace_ran]
+    assert_equal true, res2.context[:tracer_ran]
+  end
+
+  it "Works with new trace modules in the parent class" do
+    custom_tracer = Module.new do
+      def self.trace(key, data)
+        if key == "execute_query"
+          data[:query].context[:tracer_ran] = true
+        end
+        yield
+      end
+    end
+
+    custom_trace_module = Module.new do
+      def execute_query(query:)
+        query.context[:trace_module_ran] = true
+      end
+    end
+
+
+    query_type = Class.new(GraphQL::Schema::Object) do
+      graphql_name("Query")
+      field :int, Integer
+      def int
+        4
+      end
+    end
+
+    parent_schema = Class.new(GraphQL::Schema) do
+      query(query_type)
+      trace_with(custom_trace_module)
+    end
+
+    child_schema = Class.new(parent_schema) do
+      tracer(custom_tracer)
+    end
+
+
+    res1 = parent_schema.execute("{ int }")
+    assert_equal true, res1.context[:trace_module_ran]
+    assert_nil res1.context[:tracer_ran]
+
+    res2 = child_schema.execute("{ int }")
+    assert_equal true, res2.context[:trace_module_ran]
+    assert_equal true, res1.context[:tracer_ran]
   end
 end