Replace custom query string to hash parser with Rack::Utils.parse_nes…

…ted_query

Closes #140

lib/rspec_api_documentation/client_base.rb

@@ -74,12 +74,7 @@ def document_example(method, path)
     end
 
     def query_hash
-      strings = query_string.split("&")
-      arrays = strings.map do |segment|
-        k,v = segment.split("=")
-        [k, v && CGI.unescape(v)]
-      end
-      Hash[arrays]
+      Rack::Utils.parse_nested_query(query_string)
     end
 
     def headers(method, path, params, request_headers)

spec/rack_test_client_spec.rb

@@ -88,7 +88,7 @@ class StubApp < Sinatra::Base
     context "when examples should be documented", :document => true do
       it "should still argument the metadata" do |example|
         metadata = example.metadata[:requests].first
-        expect(metadata[:request_query_parameters]).to eq({'query' => nil, 'other' => 'exists'})
+        expect(metadata[:request_query_parameters]).to eq({'query' => "", 'other' => 'exists'})
       end
     end
   end
@@ -136,6 +136,13 @@ class StubApp < Sinatra::Base
           expect(example.metadata[:requests].first[:request_body]).to be_nil
         end
       end
+
+      specify "array parameters" do |example|
+        test_client.post "/greet?query[]=test&query[]=query", post_data, headers
+
+        metadata = example.metadata[:requests].last
+        expect(metadata[:request_query_parameters]).to eq({ "query" => ["test", "query"] })
+      end
     end
   end
 end