Include request info in exceptions raised by RaiseError Middleware

lib/faraday/error.rb

@@ -38,6 +38,14 @@ def inspect
     #              :headers - String key/value hash of HTTP response header
     #                         values.
     #              :body    - Optional string HTTP response body.
+    #              :request - Hash
+    #                           :method   - Symbol with the request HTTP method.
+    #                           :url_path - String with the url path requested.
+    #                           :params   - String key/value hash of query params
+    #                                     present in the request.
+    #                           :headers  - String key/value hash of HTTP request
+    #                                     header values.
+    #                           :body     - String HTTP request body.
     #
     # If a subclass has to call this, then it should pass a string message
     # to `super`. See NilStatusError.

lib/faraday/response/raise_error.rb

@@ -38,7 +38,18 @@ def on_complete(env)
       end
 
       def response_values(env)
-        { status: env.status, headers: env.response_headers, body: env.body }
+        {
+          status: env.status,
+          headers: env.response_headers,
+          body: env.body,
+          request: {
+            method: env.method,
+            url_path: env.url.path,
+            params: env.params,
+            headers: env.request_headers,
+            body: env.request_body
+          }
+        }
       end
     end
   end

spec/faraday/response/raise_error_spec.rb

@@ -103,4 +103,37 @@
       expect(ex.response[:status]).to eq(500)
     end
   end
+
+  describe 'request info' do
+    let(:conn) do
+      Faraday.new do |b|
+        b.response :raise_error
+        b.adapter :test do |stub|
+          stub.post('request?full=true', request_body, request_headers) do
+            [400, { 'X-Reason' => 'because' }, 'keep looking']
+          end
+        end
+      end
+    end
+    let(:request_body) { JSON.generate({ 'item' => 'sth' }) }
+    let(:request_headers) { { 'Authorization' => 'Basic 123' } }
+
+    subject(:perform_request) do
+      conn.post 'request' do |req|
+        req.headers['Authorization'] = 'Basic 123'
+        req.params[:full] = true
+        req.body = request_body
+      end
+    end
+
+    it 'returns the request info in the exception' do
+      expect { perform_request }.to raise_error(Faraday::BadRequestError) do |ex|
+        expect(ex.response[:request][:method]).to eq(:post)
+        expect(ex.response[:request][:url_path]).to eq('/request')
+        expect(ex.response[:request][:params]).to eq({ 'full' => 'true' })
+        expect(ex.response[:request][:headers]).to match(a_hash_including(request_headers))
+        expect(ex.response[:request][:body]).to eq(request_body)
+      end
+    end
+  end
 end