Fixed duplicating endpoints

.rubocop_todo.yml

@@ -26,7 +26,7 @@ Metrics/BlockNesting:
 # Offense count: 4
 # Configuration parameters: CountComments.
 Metrics/ClassLength:
-  Max: 243
+  Max: 245
 
 # Offense count: 15
 Metrics/CyclomaticComplexity:

CHANGELOG.md

@@ -13,6 +13,7 @@
 
 #### Fixes
 
+* [#988](https://github.com/intridea/grape/pull/988): Fixed duplicate identical endpoints - [@u2](https://github.com/u2).
 * [#936](https://github.com/intridea/grape/pull/936): Fixed default params processing for optional groups - [@dm1try](https://github.com/dm1try).
 * [#942](https://github.com/intridea/grape/pull/942): Fixed forced presence for optional params when based on a reused entity that was also required in another context - [@croeck](https://github.com/croeck).
 

lib/grape/dsl/routing.rb

@@ -120,7 +120,8 @@ def route(methods, paths = ['/'], route_options = {}, &block)
             }).deep_merge(route_setting(:description) || {}).deep_merge(route_options || {})
           }
 
-          endpoints << Grape::Endpoint.new(inheritable_setting, endpoint_options, &block)
+          new_endpoint = Grape::Endpoint.new(inheritable_setting, endpoint_options, &block)
+          endpoints << new_endpoint unless endpoints.any?{ |e| e.equals?(new_endpoint) }
 
           route_end
           reset_validations!

lib/grape/endpoint.rb

@@ -207,6 +207,10 @@ def endpoints
       end
     end
 
+    def equals?(e)
+      (options == e.options) && (inheritable_setting.to_hash == e.inheritable_setting.to_hash)
+    end
+
     protected
 
     def run(env)

spec/grape/dsl/routing_spec.rb

@@ -87,12 +87,17 @@ class Dummy
             .to change{ subject.endpoints.count }.from(0).to(1)
         end
 
+        it 'does not duplicate identical endpoints' do
+          subject.route(:any)
+          expect { subject.route(:any) }
+            .to_not change(subject.endpoints, :count)
+        end
+
         it 'generates correct endpoint options' do
           allow(subject).to receive(:route_setting).with(:description).and_return(fiz: 'baz')
           allow(Grape::DSL::Configuration).to receive(:stacked_hash_to_hash).and_return(nuz: 'naz')
 
           expect(Grape::Endpoint).to receive(:new) do |inheritable_setting, endpoint_options|
-            puts endpoint_options
             expect(endpoint_options[:method]).to eq :get
             expect(endpoint_options[:path]).to eq '/foo'
             expect(endpoint_options[:for]).to eq subject