Document how to use URL params with DELETE method (#220)

* restore ability to set URL params for DELETE method
* make DELETE method acts as POST
* fix pr remarks

README.md

@@ -76,6 +76,10 @@ class HomepageTest < Test::Unit::TestCase
     # parameters, so make sure that `json` below is already a JSON-serialized string.
     post(uri, json, { 'CONTENT_TYPE' => 'application/json' })
   end
+
+  def delete_with_url_params_and_body
+    delete '/?foo=bar', JSON.generate('baz' => 'zot')
+  end
 end
 ```
 

spec/rack/test_spec.rb

@@ -613,6 +613,26 @@ def verb
     def verb
       'delete'
     end
+
+    it 'uses the provided params hash' do
+      delete '/', foo: 'bar'
+      expect(last_request.GET).to eq({})
+      expect(last_request.POST).to eq('foo' => 'bar')
+      expect(last_request.body.read).to eq('foo=bar')
+    end
+
+    it 'accepts params in the path' do
+      delete '/?foo=bar'
+      expect(last_request.GET).to eq('foo' => 'bar')
+      expect(last_request.POST).to eq({})
+      expect(last_request.body.read).to eq('')
+    end
+
+    it 'accepts a body' do
+      delete '/', 'Lobsterlicious!'
+      expect(last_request.GET).to eq({})
+      expect(last_request.body.read).to eq('Lobsterlicious!')
+    end
   end
 
   describe '#options' do