Skip encoding customization test on ancient Rubies

Author: georgeclaghorn

test/jbuilder_test.rb

@@ -714,10 +714,12 @@ class JbuilderTest < ActiveSupport::TestCase
     end
   end
 
-  test "respects JSON encoding customizations" do
-    # Active Support overrides Time#as_json for custom formatting.
-    # Ensure we call #to_json on the final attributes instead of JSON.dump.
-    result = JSON.load(Jbuilder.new { |json| json.time Time.parse("2018-05-13 11:51:00.485 -0400") }.target!)
-    assert_equal "2018-05-13T11:51:00.485-04:00", result["time"]
+  if RUBY_VERSION >= "2.2.10"
+    test "respects JSON encoding customizations" do
+      # Active Support overrides Time#as_json for custom formatting.
+      # Ensure we call #to_json on the final attributes instead of JSON.dump.
+      result = JSON.load(Jbuilder.encode { |json| json.time Time.parse("2018-05-13 11:51:00.485 -0400") })
+      assert_equal "2018-05-13T11:51:00.485-04:00", result["time"]
+    end
   end
 end