Generate initializer on installation task

CHANGELOG.md

@@ -5,6 +5,13 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## Unreleased
+
+### Added
+
+* Installs initializer on `rails g disqualified:install`. All values are
+  defaults
+
 ## v0.5.0 - 2024-12-02
 
 ### Added

lib/generators/disqualified/install/install_generator.rb

@@ -17,4 +17,8 @@ def copy_migration_file
     basename = "20241119023328_create_disqualified_sequences.rb"
     copy_file(basename, File.join(db_migrate_path, basename))
   end
+
+  def copy_initializer
+    copy_file("initializer.rb", "config/initializers/disqualified.rb")
+  end
 end

lib/generators/disqualified/install/templates/initializer.rb

@@ -0,0 +1,11 @@
+Disqualified.configure_server do |config|
+  config.delay_high = 5.0
+  config.delay_low = 1.0
+  config.logger = Rails.logger
+  config.pool_size = 5
+  config.on_error do |exception, context|
+    puts "Unhandled Disqualified error"
+    pp exception
+    pp context
+  end
+end

test/disqualified/configuration_test.rb

@@ -0,0 +1,27 @@
+# typed: strict
+
+require "test_helper"
+
+class Disqualified::ConfigurationTest < ActiveSupport::TestCase
+  test "initializer is fine" do
+    original_options = Disqualified.server_options
+
+    Disqualified.server_options = Disqualified::ServerConfiguration.new
+    load(File.expand_path("../../lib/generators/disqualified/install/templates/initializer.rb", __dir__))
+
+    default_server_options = Disqualified::ServerConfiguration.new
+    initializer_options = T.must(Disqualified.server_options)
+
+    assert_equal(default_server_options.delay_high, initializer_options.delay_high)
+    assert_equal(default_server_options.delay_low, initializer_options.delay_low)
+    assert_equal(default_server_options.logger, initializer_options.logger)
+    assert_equal(default_server_options.pool_size, initializer_options.pool_size)
+    assert_equal(default_server_options.pwd, initializer_options.pwd)
+    assert_equal(1, initializer_options.error_hooks.size)
+    assert_output(/StandardError.*orange.*mocha/m) do
+      T.must(initializer_options.error_hooks.first).call(StandardError.new, {orange: :mocha})
+    end
+  ensure
+    Disqualified.server_options = original_options
+  end
+end

test/dummy/config/database.yml

@@ -9,17 +9,32 @@ default: &default
   pool: <%= ENV.fetch("RAILS_MAX_THREADS") { 5 } %>
   timeout: 5000
 
+generator_test: &generator_test
+  migrations_paths: db/generator_test_migrate
+  adapter: sqlite3
+  database: ":memory:"
+  timeout: 5000
+
 development:
-  <<: *default
-  database: db/development.sqlite3
+  primary:
+    <<: *default
+    database: db/development.sqlite3
+  generator_test:
+    <<: *generator_test
 
 # Warning: The database defined as "test" will be erased and
 # re-generated from your development database when you run "rake".
 # Do not set this db to the same as development or production.
 test:
-  <<: *default
-  database: db/test.sqlite3
+  primary:
+    <<: *default
+    database: db/test.sqlite3
+  generator_test:
+    <<: *generator_test
 
 production:
-  <<: *default
-  database: db/production.sqlite3
+  primary:
+    <<: *default
+    database: db/production.sqlite3
+  generator_test:
+    <<: *generator_test

test/lib/generators/disqualified/install_generator_test.rb

@@ -6,9 +6,23 @@ class Disqualified::InstallGeneratorTest < Rails::Generators::TestCase
   destination Rails.root.join("tmp/generators")
   setup :prepare_destination
 
-  # test "generator runs without errors" do
-  #   assert_nothing_raised do
-  #     run_generator ["arguments"]
-  #   end
-  # end
+  test "generator runs without errors" do
+    assert_nothing_raised do
+      run_generator
+    end
+
+    assert_operator(destination_root.join("config/initializers/disqualified.rb"), :exist?)
+    assert_operator(destination_root.join("db/migrate/20220703062536_create_disqualified_jobs.rb"), :exist?)
+    assert_operator(destination_root.join("db/migrate/20241119023328_create_disqualified_sequences.rb"), :exist?)
+  end
+
+  test "generator handles multiple databases" do
+    assert_nothing_raised do
+      run_generator(["--db", "generator_test"])
+    end
+
+    assert_operator(destination_root.join("config/initializers/disqualified.rb"), :exist?)
+    assert_operator(destination_root.join("db/generator_test_migrate/20220703062536_create_disqualified_jobs.rb"), :exist?)
+    assert_operator(destination_root.join("db/generator_test_migrate/20241119023328_create_disqualified_sequences.rb"), :exist?)
+  end
 end