Set the path / if it is empty in order to be compatible with defaul…

…t adapter (#28)

lib/async/http/faraday/adapter.rb

@@ -85,6 +85,9 @@ def close
 				def call(env)
 					super
 
+					# for compatibility with the default adapter
+					env.url.path = '/' if env.url.path.empty?
+
 					Sync do
 						endpoint = Endpoint.new(env.url)
 

spec/async/http/faraday/adapter_spec.rb

@@ -83,6 +83,13 @@ def get_response(url = endpoint.url, path = '/index', adapter_options: {})
 		end
 	end
 
+	it "works without initial url and trailing slash (compatiblisity to the original behaviour)" do
+		response = Faraday.new do |faraday|
+			faraday.adapter :async_http
+		end.get 'https://www.google.com'
+		expect(response).to be_success
+	end
+
 	it 'properly handles chunked responses' do
 		large_response_size = 65536