Use entity_name event if type come from a string (ruby-grape#547)

* Use entity_name event if type come from a string

* Fix CHANGELOG.md format

* Make rubocup happy

CHANGELOG.md

@@ -7,6 +7,8 @@
 #### Fixes
 
 * [#546](https://github.com/ruby-grape/grape-swagger/pull/546): Move development dependencies to Gemfile - [@olleolleolle](https://github.com/olleolleolle).
+* [#547](https://github.com/ruby-grape/grape-swagger/pull/547): Use entity_name event if type come from a string - [@frodrigo](https://github.com/frodrigo).
+* Your contribution here.
 
 ### 0.25.2 (November 30, 2016)
 

lib/grape-swagger/doc_methods/data_type.rb

@@ -32,7 +32,12 @@ def call(value)
         def parse_multi_type(raw_data_type)
           case raw_data_type
           when /\A\[.*\]\z/
-            raw_data_type.gsub(/[\[\s+\]]/, '').split(',').first
+            type_as_string = raw_data_type.gsub(/[\[\s+\]]/, '').split(',').first
+            begin
+              Object.const_get(type_as_string)
+            rescue NameError
+              type_as_string
+            end
           when Array
             raw_data_type.first
           else

spec/lib/data_type_spec.rb

@@ -1,6 +1,15 @@
 require 'spec_helper'
 
 describe GrapeSwagger::DocMethods::DataType do
+  before do
+    stub_const 'MyEntity', Class.new
+    MyEntity.class_eval do
+      def self.entity_name
+        'MyInteger'
+      end
+    end
+  end
+
   subject { described_class.call(value) }
 
   describe 'standards' do
@@ -36,6 +45,12 @@
     it { expect(subject).to eql 'string' }
   end
 
+  describe 'Types in array with entity_name' do
+    let(:value) { { type: '[MyEntity]' } }
+
+    it { expect(subject).to eql 'MyInteger' }
+  end
+
   describe 'Rack::Multipart::UploadedFile' do
     let(:value) { { type: Rack::Multipart::UploadedFile } }