feat: add delete endpoint to exercise metrics

app/controllers/api/v1/exercise_metrics_controller.rb

@@ -3,7 +3,7 @@
 module Api
   module V1
     class ExerciseMetricsController < ApplicationController
-      skip_before_action :authenticate_user!, only: %i[index create update]
+      skip_before_action :authenticate_user!, only: %i[index create update destroy]
 
       def index
         options = { is_collection: true }
@@ -31,6 +31,12 @@ def update
         end
       end
 
+      def destroy
+        exercise_metric = current_user.exercise_metrics.find(params[:id])
+
+        exercise_metric.destroy
+      end
+
       private
 
       def exercise_metric_params

app/serializers/exercise_metric_serializer.rb

@@ -2,5 +2,5 @@
 
 class ExerciseMetricSerializer
   include JSONAPI::Serializer
-  attributes :user_id, :name, :steps, :distance_in_m, :intensity
+  attributes :user_id, :name, :steps, :distance_in_m, :intensity, :duration_in_min
 end

config/routes.rb

@@ -19,7 +19,7 @@
   namespace :api do
     namespace :v1 do
       resources :bmi_calculations, only: :show
-      resources :exercise_metrics, only: %i[index create update]
+      resources :exercise_metrics, only: %i[index create update destroy]
       resources :profiles, only: %i[index show update]
     end
   end

spec/requests/api/v1/exercise_metrics_controller_spec.rb

@@ -138,4 +138,26 @@
       end
     end
   end
+
+  describe "DELETE #destroy" do
+    it "renders a successful response" do
+      user = create(:user)
+      exercise_metric = create(:exercise_metric, user: user)
+
+      delete api_v1_exercise_metric_path(exercise_metric),
+        params: { user_id: user.id }, as: :json
+
+      expect(response).to have_http_status(:no_content)
+    end
+
+    it "destroys user's exercise metric" do
+      user = create(:user)
+      exercise_metric = create(:exercise_metric, user: user)
+
+      delete api_v1_exercise_metric_path(exercise_metric),
+        params: { user_id: user.id }, as: :json
+
+      expect(user.reload.exercise_metrics.last).not_to eq(exercise_metric)
+    end
+  end
 end

spec/routing/api/v1/exercise_metrics_routing_spec.rb

@@ -28,4 +28,11 @@
       action: :update
     )
   end
+
+  it do
+    expect(described_class).to route(:delete, "/api/v1/exercise_metrics/1").to(
+      id: "1", controller: "api/v1/exercise_metrics",
+      action: :destroy
+    )
+  end
 end