Add Rails 4 to CI (#130)

.circleci/config.yml

@@ -37,6 +37,11 @@ jobs:
 workflows:
   tests:
     jobs:
+      - build:
+          matrix:
+            parameters:
+              rails_version: ["~> 4.0"]
+              ruby_version: ["2.6.6"]
       - build:
           matrix:
             parameters:

lib/spyke/http.rb

@@ -114,10 +114,10 @@ def add_errors_to_model(errors_hash)
           field_errors.each do |error_attributes|
             error = NormalizedValidationError.new(error_attributes)
 
-            if errors.method(:add).arity == -2
-              errors.add(field.to_sym, error.message, **error.options)
-            else
+            if ActiveSupport::VERSION::MAJOR < 5
               errors.add(field.to_sym, error.message, error.options)
+            else
+              errors.add(field.to_sym, error.message, **error.options)
             end
           end
         end

test/activemodel_dirty_test.rb

@@ -6,7 +6,7 @@ def test_attributes_instance_var_compatibility
       recipe = RecipeWithDirty.new(title: 'Cheeseburger')
 
       # If @attributes is set on recipe ActiveModel::Dirty will crash
-      assert_equal false, recipe.attribute_changed_in_place?(:title)
+      assert_equal({}, recipe.changes)
     end
   end
 end

test/attributes_test.rb

@@ -18,8 +18,13 @@ def test_initializing_using_permitted_strong_params
     end
 
     def test_initializing_using_unpermitted_strong_params
-      assert_raises ActionController::UnfilteredParameters do
-        Ingredient.new(strong_params(name: 'Flour'))
+      if ActiveSupport::VERSION::MAJOR < 5
+        ingredient = Ingredient.new(strong_params(name: 'Flour'))
+        assert_equal({}, ingredient.attributes)
+      else
+        assert_raises ActionController::UnfilteredParameters do
+          Ingredient.new(strong_params(name: 'Flour'))
+        end
       end
     end