tests(rails): add integration tests for Sequel/Rails tracing

Author: solnic

sentry-rails/Gemfile

@@ -62,3 +62,5 @@ gem "benchmark-ips"
 gem "benchmark_driver"
 gem "benchmark-ipsa"
 gem "benchmark-memory"
+
+gem "sequel"

sentry-rails/spec/dummy/test_rails_app/app/controllers/sequel_users_controller.rb

@@ -0,0 +1,46 @@
+# frozen_string_literal: true
+
+require "sequel"
+require "sentry/sequel"
+
+# Controller that uses Sequel for database operations
+# Used for testing Sequel tracing integration with Rails
+#
+# The SEQUEL_DB constant is set up in the test's before(:all) block,
+# simulating how a Rails initializer would configure the connection.
+class SequelUsersController < ActionController::Base
+  def index
+    users = SEQUEL_DB[:users].all
+    render json: users
+  end
+
+  def create
+    id = SEQUEL_DB[:users].insert(name: params[:name], email: params[:email])
+    render json: { id: id, name: params[:name], email: params[:email] }, status: :created
+  end
+
+  def show
+    user = SEQUEL_DB[:users].where(id: params[:id]).first
+    if user
+      render json: user
+    else
+      render json: { error: "Not found" }, status: :not_found
+    end
+  end
+
+  def update
+    SEQUEL_DB[:users].where(id: params[:id]).update(name: params[:name])
+    user = SEQUEL_DB[:users].where(id: params[:id]).first
+    render json: user
+  end
+
+  def destroy
+    SEQUEL_DB[:users].where(id: params[:id]).delete
+    head :no_content
+  end
+
+  def exception
+    SEQUEL_DB[:users].all
+    raise "Something went wrong!"
+  end
+end

sentry-rails/spec/dummy/test_rails_app/config/application.rb

@@ -122,6 +122,16 @@ def configure
               end
             end
 
+            # Sequel-specific routes for testing Sequel tracing
+            scope "/sequel" do
+              get "/users", to: "sequel_users#index"
+              post "/users", to: "sequel_users#create"
+              get "/users/:id", to: "sequel_users#show"
+              put "/users/:id", to: "sequel_users#update"
+              delete "/users/:id", to: "sequel_users#destroy"
+              get "/exception", to: "sequel_users#exception"
+            end
+
             get "500", to: "hello#reporting"
 
             root to: "hello#world"

sentry-rails/spec/isolated/sequel_tracing_spec.rb

@@ -0,0 +1,196 @@
+# frozen_string_literal: true
+
+begin
+  require "simplecov"
+  SimpleCov.command_name "SequelTracing"
+rescue LoadError
+end
+
+require "sequel"
+require "sentry/sequel"
+
+require_relative "../dummy/test_rails_app/app/controllers/sequel_users_controller"
+
+RSpec.describe "Sequel Tracing with Rails", type: :request do
+  before(:all) do
+    SEQUEL_DB = Sequel.sqlite
+
+    SEQUEL_DB.create_table :users do
+      primary_key :id
+      String :name
+      String :email
+    end
+
+    SEQUEL_DB[:users].count
+    SEQUEL_DB.extension(:sentry)
+  end
+
+  after(:all) do
+    SEQUEL_DB.drop_table?(:users)
+    Object.send(:remove_const, :SEQUEL_DB)
+  end
+
+  before do
+    make_basic_app do |config, app|
+      config.traces_sample_rate = 1.0
+      config.enabled_patches << :sequel
+    end
+  end
+
+  let(:transport) { Sentry.get_current_client.transport }
+
+  describe "SELECT queries" do
+    it "creates a transaction with Sequel span for index action" do
+      get "/sequel/users"
+
+      expect(response).to have_http_status(:ok)
+      expect(transport.events.count).to eq(1)
+
+      transaction = transport.events.last.to_h
+
+      expect(transaction[:type]).to eq("transaction")
+      expect(transaction.dig(:contexts, :trace, :op)).to eq("http.server")
+
+      sequel_span = transaction[:spans].find { |span| span[:op] == "db.sql.sequel" }
+
+      expect(sequel_span).not_to be_nil
+      expect(sequel_span[:description]).to include("SELECT")
+      expect(sequel_span[:description]).to include("users")
+      expect(sequel_span[:origin]).to eq("auto.db.sequel")
+      expect(sequel_span[:data]["db.system"]).to eq("sqlite")
+    end
+  end
+
+  describe "INSERT queries" do
+    it "creates a transaction with Sequel span for create action" do
+      post "/sequel/users", params: { name: "John Doe", email: "john@example.com" }
+
+      expect(response).to have_http_status(:created)
+
+      transaction = transport.events.last.to_h
+      expect(transaction[:type]).to eq("transaction")
+
+      insert_span = transaction[:spans].find do |span|
+        span[:op] == "db.sql.sequel" && span[:description]&.include?("INSERT")
+      end
+
+      expect(insert_span).not_to be_nil
+      expect(insert_span[:description]).to include("INSERT")
+      expect(insert_span[:description]).to include("users")
+      expect(insert_span[:origin]).to eq("auto.db.sequel")
+    end
+  end
+
+  describe "UPDATE queries" do
+    it "creates a transaction with Sequel span for update action" do
+      SEQUEL_DB[:users].insert(name: "Jane Doe", email: "jane@example.com")
+
+      put "/sequel/users/1", params: { name: "Jane Smith" }
+
+      expect(response).to have_http_status(:ok)
+
+      transaction = transport.events.last.to_h
+
+      update_span = transaction[:spans].find do |span|
+        span[:op] == "db.sql.sequel" && span[:description]&.include?("UPDATE")
+      end
+
+      expect(update_span).not_to be_nil
+      expect(update_span[:description]).to include("UPDATE")
+      expect(update_span[:description]).to include("users")
+    end
+  end
+
+  describe "DELETE queries" do
+    it "creates a transaction with Sequel span for delete action" do
+      SEQUEL_DB[:users].insert(name: "Delete Me", email: "delete@example.com")
+
+      delete "/sequel/users/1"
+
+      expect(response).to have_http_status(:no_content)
+
+      transaction = transport.events.last.to_h
+
+      delete_span = transaction[:spans].find do |span|
+        span[:op] == "db.sql.sequel" && span[:description]&.include?("DELETE")
+      end
+
+      expect(delete_span).not_to be_nil
+      expect(delete_span[:description]).to include("DELETE")
+      expect(delete_span[:description]).to include("users")
+    end
+  end
+
+  describe "exception handling" do
+    it "creates both error event and transaction with Sequel span" do
+      get "/sequel/exception"
+
+      expect(response).to have_http_status(:internal_server_error)
+
+      expect(transport.events.count).to eq(2)
+
+      error_event = transport.events.first.to_h
+      transaction = transport.events.last.to_h
+
+      expect(error_event[:exception][:values].first[:type]).to eq("RuntimeError")
+      expect(error_event[:exception][:values].first[:value]).to include("Something went wrong!")
+
+      sequel_span = transaction[:spans].find { |span| span[:op] == "db.sql.sequel" }
+      expect(sequel_span).not_to be_nil
+      expect(sequel_span[:description]).to include("SELECT")
+
+      expect(error_event.dig(:contexts, :trace, :trace_id)).to eq(
+        transaction.dig(:contexts, :trace, :trace_id)
+      )
+    end
+  end
+
+  describe "span timing" do
+    it "records proper start and end timestamps" do
+      get "/sequel/users"
+
+      transaction = transport.events.last.to_h
+      sequel_span = transaction[:spans].find { |span| span[:op] == "db.sql.sequel" }
+
+      expect(sequel_span[:start_timestamp]).not_to be_nil
+      expect(sequel_span[:timestamp]).not_to be_nil
+      expect(sequel_span[:start_timestamp]).to be < sequel_span[:timestamp]
+    end
+  end
+
+  describe "Sequel and ActiveRecord coexistence" do
+    it "records spans for both database systems in the same application" do
+      Post.create!(title: "Test Post")
+
+      SEQUEL_DB[:users].insert(name: "Sequel User", email: "sequel@example.com")
+
+      transport.events.clear
+
+      get "/sequel/users"
+
+      expect(response).to have_http_status(:ok)
+
+      transaction = transport.events.last.to_h
+      sequel_spans = transaction[:spans].select { |span| span[:op] == "db.sql.sequel" }
+
+      expect(sequel_spans.length).to be >= 1
+      expect(sequel_spans.first[:data]["db.system"]).to eq("sqlite")
+    end
+
+    it "records ActiveRecord spans separately from Sequel spans" do
+      transport.events.clear
+
+      get "/posts"
+
+      expect(response).to have_http_status(:internal_server_error) # raises "foo" in PostsController#index
+
+      transaction = transport.events.last.to_h
+
+      ar_spans = transaction[:spans].select { |span| span[:op] == "db.sql.active_record" }
+      sequel_spans = transaction[:spans].select { |span| span[:op] == "db.sql.sequel" }
+
+      expect(ar_spans.length).to be >= 1
+      expect(sequel_spans.length).to eq(0)
+    end
+  end
+end