Fix introspection of default input objects

It seems that the intent was to allow default input object values to be
specified in snake_case, but we weren't camelCasing them on output which
was leading to issues.

Tweak an existing spec to cover this case (as well as the "enums
specifed as values not names" case), then add the missing call to
camelize.

Author: eapache

lib/graphql/schema/input_object.rb

@@ -226,8 +226,8 @@ def coerce_input(value, ctx)
         # It's funny to think of a _result_ of an input object.
         # This is used for rendering the default value in introspection responses.
         def coerce_result(value, ctx)
-          # Allow the application to provide values as :symbols, and convert them to the strings
-          value = value.reduce({}) { |memo, (k, v)| memo[k.to_s] = v; memo }
+          # Allow the application to provide values as :snake_symbols, and convert them to the camelStrings
+          value = value.reduce({}) { |memo, (k, v)| memo[Member::BuildType.camelize(k.to_s)] = v; memo }
 
           result = {}
 

spec/graphql/schema/input_object_spec.rb

@@ -493,18 +493,18 @@ def self.resolve_type(type, obj, ctx)
     it "introspects in GraphQL language with enums" do
       class InputDefaultSchema < GraphQL::Schema
         class Letter < GraphQL::Schema::Enum
-          value "A"
-          value "B"
+          value "A", value: 1
+          value "B", value: 2
         end
 
         class InputObj < GraphQL::Schema::InputObject
-          argument :a, Letter, required: false
-          argument :b, Letter, required: false
+          argument :arg_a, Letter, required: false
+          argument :arg_b, Letter, required: false
         end
 
         class Query < GraphQL::Schema::Object
           field :i, Int, null: true do
-            argument :arg, InputObj, required: false, default_value: { a: "A", b: "B" }
+            argument :arg, InputObj, required: false, default_value: { arg_a: 1, arg_b: 2 }
           end
         end
 
@@ -524,7 +524,7 @@ class Query < GraphQL::Schema::Object
         }
       }
       "
-      assert_equal "{a: A, b: B}", res["data"]["__type"]["fields"].first["args"].first["defaultValue"]
+      assert_equal "{argA: A, argB: B}", res["data"]["__type"]["fields"].first["args"].first["defaultValue"]
     end
   end