Implement comparison operator for ApiModel

lib/requisite/api_model.rb

@@ -46,6 +46,10 @@ def to_json(show_nil: false)
       to_hash(show_nil: show_nil).to_json
     end
 
+    def ==(other)
+      other.class == self.class && other.to_hash == self.to_hash
+    end
+
     private
 
     def parse_typed_hash(name, hash)

test/requisite/api_model_test.rb

@@ -187,6 +187,30 @@ def response.b; 2; end
       response.to_hash.must_equal(:num => 12)
     end
 
+    describe '#==' do
+      let(:response_1) do
+        DummyApiModel.serialized_attributes { attribute :a }
+        DummyApiModel.new(a: 'A')
+      end
+
+      it 'is true with the same object' do
+        response_2 = response_1
+        assert_equal response_1, response_2
+      end
+
+      it 'is true with an equal object' do
+        DummyApiModel.serialized_attributes { attribute :a }
+        response_2 = DummyApiModel.new(a: 'A')
+        assert_equal response_1, response_2
+      end
+
+      it 'is false with an unequal object' do
+        DummyApiModel.serialized_attributes { attribute :a }
+        response_2 = DummyApiModel.new(a: 'B')
+        refute_equal response_1, response_2
+      end
+    end
+
     describe 'with nested structures' do
 
       describe 'with typed arrays' do