Add test

Author: vincentchalamon

features/swagger/docs.feature

@@ -103,3 +103,10 @@ Feature: Documentation support
     And I should see text matching "My Dummy API"
     And I should see text matching "swagger"
     And I should see text matching "2.0"
+
+  Scenario: Retrieve the Swagger/OpenAPI documentation with API Gateway compatibility
+    Given I send a "GET" request to "/docs.json?api_gateway=true"
+    Then the response status code should be 200
+    And the response should be in JSON
+    And the header "Content-Type" should be equal to "application/json; charset=utf-8"
+    And the JSON node "basePath" should be equal to "/"