A refactoring PR of send_v1 method

lib/fcm.rb

@@ -7,20 +7,16 @@ class FCM
   BASE_URI = "https://fcm.googleapis.com"
   BASE_URI_V1 = "https://fcm.googleapis.com/v1/projects/"
   DEFAULT_TIMEOUT = 30
-  FORMAT = :json
 
-  # constants
   GROUP_NOTIFICATION_BASE_URI = "https://android.googleapis.com"
   INSTANCE_ID_API = "https://iid.googleapis.com"
   TOPIC_REGEX = /[a-zA-Z0-9\-_.~%]+/
 
-  attr_accessor :timeout, :api_key, :json_key_path, :project_base_uri
-
   def initialize(api_key, json_key_path = "", project_name = "", client_options = {})
     @api_key = api_key
     @client_options = client_options
     @json_key_path = json_key_path
-    @project_base_uri = BASE_URI_V1 + project_name.to_s
+    @project_name = project_name
   end
 
   # See https://firebase.google.com/docs/cloud-messaging/send-message
@@ -48,20 +44,20 @@ def initialize(api_key, json_key_path = "", project_name = "", client_options =
   #   }
   # }
   # fcm = FCM.new(api_key, json_key_path, project_name)
-  # fcm.send(
+  # fcm.send_v1(
   #    { "token": "4sdsx",, "to" : "notification": {}.. }
   # )
   def send_notification_v1(message)
-    return if @project_base_uri.empty?
+    return if @project_name.empty?
 
     post_body = { 'message': message }
-
-    response = Faraday.post("#{@project_base_uri}/messages:send") do |req|
-      req.headers["Content-Type"] = "application/json"
-      req.headers["Authorization"] = "Bearer #{jwt_token}"
-      req.body = post_body.to_json
+    extra_headers = {
+      "Authorization" => "Bearer #{jwt_token}"
+    }
+    for_uri(BASE_URI_V1, extra_headers) do |connection|
+      response = connection.post("#{@project_name}/messages:send", post_body.to_json)
+      build_response(response)
     end
-    build_response(response)
   end
 
   alias send_v1 send_notification_v1
@@ -228,7 +224,7 @@ def for_uri(uri, extra_headers = {})
     ) do |faraday|
       faraday.adapter Faraday.default_adapter
       faraday.headers["Content-Type"] = "application/json"
-      faraday.headers["Authorization"] = "key=#{api_key}"
+      faraday.headers["Authorization"] = "key=#{@api_key}"
       extra_headers.each do |key, value|
         faraday.headers[key] = value
       end

spec/fcm_spec.rb

@@ -24,7 +24,73 @@
   end
 
   describe "#send_v1" do
-    pending "should send message"
+    let(:project_name) { "project_name" }
+    let(:send_v1_url) { "#{FCM::BASE_URI_V1}#{project_name}/messages:send" }
+    let(:access_token) { "access_token" }
+    let(:valid_request_v1_headers) do
+      {
+        "Content-Type" => "application/json",
+        "Authorization" => "Bearer #{access_token}",
+      }
+    end
+
+    let(:send_v1_params) do
+      {
+        "token" => "4sdsx",
+        "notification" => {
+          "title" => "Breaking News",
+          "body" => "New news story available."
+        },
+        "data" => {
+          "story_id" => "story_12345"
+        },
+        "android" => {
+          "notification" => {
+            "click_action": "TOP_STORY_ACTIVITY",
+            "body" => "Check out the Top Story"
+          }
+        },
+        "apns" => {
+          "payload" => {
+            "aps" => {
+              "category"  => "NEW_MESSAGE_CATEGORY"
+            }
+          }
+        }
+      }
+    end
+
+    let(:valid_request_v1_body) do
+      { "message" => send_v1_params }
+    end
+
+    let(:stub_fcm_send_v1_request) do
+      stub_request(:post, send_v1_url).with(
+        body: valid_request_v1_body.to_json,
+        headers: valid_request_v1_headers,
+      ).to_return(
+        # ref: https://firebase.google.com/docs/cloud-messaging/http-server-ref#interpret-downstream
+        body: "{}",
+        headers: {},
+        status: 200,
+      )
+    end
+
+    let(:authorizer_double) { double("token_fetcher") }
+    let(:json_key_path) { double("file alike object") }
+
+    before do
+      expect(json_key_path).to receive(:respond_to?).and_return(true)
+      expect(Google::Auth::ServiceAccountCredentials).to receive_message_chain(:make_creds).and_return(authorizer_double)
+      expect(authorizer_double).to receive(:fetch_access_token!).and_return({ "access_token" => access_token })
+      stub_fcm_send_v1_request
+    end
+
+    it "should send notification of HTTP V1 using POST to FCM server" do
+      fcm = FCM.new(api_key, json_key_path, project_name)
+      fcm.send_v1(send_v1_params).should eq(response: "success", body: "{}", headers: {}, status_code: 200)
+      stub_fcm_send_v1_request.should have_been_made.times(1)
+    end
   end
 
   describe "sending notification" do