Failing spec to expose problem mentioned in #384

spec/acceptance/shared/stubbing_requests.rb

@@ -44,6 +44,11 @@
     end
 
     describe "based on query params" do
+      it 'does not raise',focus:true do
+        url = 'http://example.com?tags%5B%5D%5Bbaz%5D=quux&tags%5B%5D%5Bfoo%5D=bar'
+        expect { stub_request(:get, url) }.to_not raise_error
+      end
+
       it "should return stubbed response when stub declares query params as a hash" do
         stub_request(:get, "www.example.com").with(:query => {"a" => ["b x", "c d"]}).to_return(:body => "abc")
         expect(http_request(:get, "http://www.example.com/?a[]=b+x&a[]=c%20d").body).to eq("abc")