DEV: Refactor migrations-tooling

* Updates GitHub Action for migrations
* Rubocop: Always `EnforcedShorthandSyntax` for hashes in the `migrations` directory
* Automatically load all available converter steps
* Enable YJIT at runtime, if available
* Progressbar shows skipped records and other small improvements

.github/workflows/migration-tests.yml

@@ -23,21 +23,16 @@ permissions:
 jobs:
   tests:
     if: github.event_name == 'pull_request' || github.repository != 'discourse/discourse-private-mirror'
-    name: Tests with Ruby ${{ matrix.ruby }}
-    runs-on: ${{ (github.repository != 'discourse/discourse' && 'ubuntu-latest') || 'debian-12' }}
-    container: discourse/discourse_test:slim
+    name: Tests
+    runs-on: ${{ (github.repository_owner == 'discourse' && 'debian-12') || 'ubuntu-latest' }}
+    container: discourse/discourse_test:release
     timeout-minutes: 20
 
     env:
       RAILS_ENV: test
       PGUSER: discourse
       PGPASSWORD: discourse
-
-    strategy:
-      fail-fast: false
-
-      matrix:
-        ruby: ["3.3"]
+      LOAD_PLUGINS: 1
 
     steps:
       - name: Set working directory owner
@@ -62,23 +57,9 @@ jobs:
           sudo -E -u postgres script/start_test_db.rb
           sudo -u postgres psql -c "CREATE ROLE $PGUSER LOGIN SUPERUSER PASSWORD '$PGPASSWORD';"
 
-      - name: Container envs
-        id: container-envs
+      - name: Symlink vendor/bundle from image
         run: |
-          echo "ruby_version=$RUBY_VERSION" >> $GITHUB_OUTPUT
-          echo "debian_release=$DEBIAN_RELEASE" >> $GITHUB_OUTPUT
-        shell: bash
-
-      - name: Bundler cache
-        uses: actions/cache@v4
-        with:
-          path: vendor/bundle
-          key: >-
-            ${{ runner.os }}-
-            ${{ steps.container-envs.outputs.ruby_version }}-
-            ${{ steps.container-envs.outputs.debian_release }}-
-            ${{ hashFiles('**/Gemfile.lock') }}-
-            migrations-tooling
+          ln -s /var/www/discourse/vendor/bundle vendor/bundle
 
       - name: Setup gems
         run: |
@@ -88,11 +69,14 @@ jobs:
           bundle config --local without development
           bundle config --local with migrations
           bundle install --jobs $(($(nproc) - 1))
-          bundle clean
 
       - name: pnpm install
         run: pnpm install --frozen-lockfile
 
+      - name: Get CPU cores
+        id: cpu-info
+        run: echo "cpu-cores=$(nproc)" >> $GITHUB_OUTPUT
+
       - name: Fetch app state cache
         uses: actions/cache@v4
         id: app-cache
@@ -100,7 +84,8 @@ jobs:
           path: tmp/app-cache
           key: >-
             ${{ runner.os }}-
-            ${{ hashFiles('.github/workflows/tests.yml') }}-
+            ${{ steps.cpu-info.outputs.cpu-cores }}-
+            ${{ hashFiles('.github/workflows/migration-tests.yml') }}-
             ${{ hashFiles('db/**/*', 'plugins/**/db/**/*') }}-
             ${{ hashFiles('config/environments/test.rb') }}
 

migrations/.rubocop.yml

@@ -0,0 +1,4 @@
+inherit_from: ../.rubocop.yml
+
+Style/HashSyntax:
+  EnforcedShorthandSyntax: always

migrations/bin/cli

@@ -1,7 +1,7 @@
 #!/usr/bin/env ruby
 # frozen_string_literal: true
 
-require_relative "../lib/migrations"
+require_relative "../migrations"
 
 require "colored2"
 require "thor"
@@ -44,6 +44,12 @@ module Migrations
   end
 end
 
+if defined?(RubyVM::YJIT)
+  RubyVM::YJIT.enable
+else
+  warn "WARNING: Performance degraded: RubyVM::YJIT is not available".yellow
+end
+
 # rubocop:disable Discourse/NoChdir
 Dir.chdir(File.expand_path("../..", __dir__)) { ::Migrations::CLI::Application.start }
 # rubocop:enable Discourse/NoChdir

migrations/config/locales/migrations.en.yml

@@ -1,5 +1,8 @@
 en:
   progressbar:
+    skips:
+      one: "%{count} skip"
+      other: "%{count} skips"
     warnings:
       one: "%{count} warning"
       other: "%{count} warnings"

migrations/lib/common/date_helper.rb

@@ -2,21 +2,16 @@
 
 module Migrations
   module DateHelper
-    # based on code from https://gist.github.com/emmahsax/af285a4b71d8506a1625a3e591dc993b
-    def self.human_readable_time(secs)
-      return "< 1 second" if secs < 1
-
-      [[60, :seconds], [60, :minutes], [24, :hours], [Float::INFINITY, :days]].map do |count, name|
-          next if secs <= 0
-
-          secs, number = secs.divmod(count)
-          unless number.to_i == 0
-            "#{number.to_i} #{number == 1 ? name.to_s.delete_suffix("s") : name}"
+    def self.human_readable_time(seconds)
+      hours, remainder = seconds.divmod(3600)
+      minutes, seconds = remainder.divmod(60)
+      format("%02d:%02d:%02d", hours, minutes, seconds)
     end
-        end
-        .compact
-        .reverse
-        .join(", ")
+
+    def self.track_time
+      start_time = Time.now
+      yield
+      Time.now - start_time
     end
   end
 end

migrations/lib/common/extended_progress_bar.rb

@@ -1,5 +1,6 @@
 # frozen_string_literal: true
 
+require "colored2"
 require "ruby-progressbar"
 
 module Migrations
@@ -7,9 +8,10 @@ module Migrations
     def initialize(max_progress: nil)
       @max_progress = max_progress
 
+      @skip_count = 0
       @warning_count = 0
       @error_count = 0
-      @extra_information = ""
+      @extra_information = +""
 
       @base_format = nil
       @progressbar = nil
@@ -18,60 +20,58 @@ module Migrations
     def run
       raise "ProgressBar already started" if @progressbar
 
-      format = setup_progressbar
+      format = calculate_format
+      setup_progressbar
+
       yield self
+
       finalize_progressbar(format)
 
       nil
     end
 
-    def update(progress, warning_count, error_count)
-      extra_information_changed = false
+    def update(increment_by:, skip_count: 0, warning_count: 0, error_count: 0)
+      updated = false
+
+      if skip_count > 0
+        @skip_count += skip_count
+        updated = true
+      end
 
       if warning_count > 0
         @warning_count += warning_count
-        extra_information_changed = true
+        updated = true
       end
 
       if error_count > 0
         @error_count += error_count
-        extra_information_changed = true
+        updated = true
       end
 
-      if extra_information_changed
-        @extra_information = +""
+      update_format if updated
 
-        if @warning_count > 0
-          @extra_information << " | " <<
-            I18n.t("progressbar.warnings", count: @warning_count).yellow
-        end
-
-        if @error_count > 0
-          @extra_information << " | " << I18n.t("progressbar.errors", count: @error_count).red
-        end
-
-        @progressbar.format = "#{@base_format}#{@extra_information}"
-      end
-
-      if progress == 1
+      if increment_by == 1
         @progressbar.increment
       else
-        @progressbar.progress += progress
+        @progressbar.progress += increment_by
       end
     end
 
     private
 
-    def setup_progressbar
-      format =
+    def calculate_format
       if @max_progress
-          I18n.t("progressbar.processed.progress_with_max", current: "%c", max: "%C")
+        format = I18n.t("progressbar.processed.progress_with_max", current: "%c", max: "%C")
+        @base_format = "    %a | %E | #{format}"
       else
-          I18n.t("progressbar.processed.progress", current: "%c")
+        format = I18n.t("progressbar.processed.progress", current: "%c")
+        @base_format = "    %a | #{format}"
       end
 
-      @base_format = @max_progress ? "    %a |%E | #{format}" : "    %a | #{format}"
+      format
+    end
 
+    def setup_progressbar
       @progressbar =
         ::ProgressBar.create(
           total: @max_progress,
@@ -83,14 +83,23 @@ module Migrations
           format: @base_format,
           throttle_rate: 0.5,
         )
+    end
 
-      format
+    def update_format
+      @extra_information.clear
+
+      messages = []
+      messages << I18n.t("progressbar.skips", count: @skip_count).cyan if @skip_count > 0
+      messages << I18n.t("progressbar.warnings", count: @warning_count).yellow if @warning_count > 0
+      messages << I18n.t("progressbar.errors", count: @error_count).red if @error_count > 0
+
+      @extra_information << " | #{messages.join(" | ")}" unless messages.empty?
+      @progressbar.format = "#{@base_format}#{@extra_information}"
     end
 
     def finalize_progressbar(format)
       print "\033[K" # delete the output of progressbar, because it doesn't overwrite longer lines
-      final_format = @max_progress ? "    %a | #{format}" : "    %a | #{format}"
-      @progressbar.format = "#{final_format}#{@extra_information}"
+      @progressbar.format = "    %a | #{format}#{@extra_information}"
       @progressbar.finish
     end
   end

migrations/lib/converters/base/converter.rb

@@ -30,7 +30,14 @@ module Migrations::Converters::Base
     end
 
     def steps
-      raise NotImplementedError
+      step_class = ::Migrations::Converters::Base::Step
+      current_module = self.class.name.deconstantize.constantize
+
+      current_module
+        .constants
+        .map { |c| current_module.const_get(c) }
+        .select { |klass| klass.is_a?(Class) && klass < step_class }
+        .sort_by(&:to_s)
     end
 
     def before_step_execution(step)
@@ -70,7 +77,7 @@ module Migrations::Converters::Base
     end
 
     def create_step(step_class)
-      default_args = { settings: settings }
+      default_args = { settings: }
 
       args = default_args.merge(step_args(step_class))
       step_class.new(StepTracker.new, args)

migrations/lib/converters/base/progress_step_executor.rb

@@ -39,7 +39,11 @@ module Migrations::Converters::Base
       with_progressbar do |progressbar|
         @step.items.each do |item|
           stats = job.run(item)
-          progressbar.update(stats.progress, stats.warning_count, stats.error_count)
+          progressbar.update(
+            increment_by: stats.progress,
+            warning_count: stats.warning_count,
+            error_count: stats.error_count,
+          )
         end
       end
     end
@@ -90,7 +94,11 @@ module Migrations::Converters::Base
               ::Migrations::Database::IntermediateDB.insert(sql, *parameters)
             end
 
-            progressbar.update(stats.progress, stats.warning_count, stats.error_count)
+            progressbar.update(
+              increment_by: stats.progress,
+              warning_count: stats.warning_count,
+              error_count: stats.error_count,
+            )
           end
         end
       end

migrations/lib/converters/base/step_tracker.rb

@@ -36,12 +36,7 @@ module Migrations::Converters::Base
     private
 
     def log(type, message, exception: nil, details: nil)
-      ::Migrations::Database::IntermediateDB::LogEntry.create!(
-        type:,
-        message:,
-        exception:,
-        details:,
-      )
+      ::Migrations::Database::IntermediateDB::LogEntry.create(type:, message:, exception:, details:)
     end
   end
 end

migrations/lib/converters/example/steps/step1.rb

@@ -6,7 +6,7 @@ module Migrations::Converters::Example
 
     def execute
       super
-      IntermediateDB::LogEntry.create!(type: "info", message: "This is a test")
+      IntermediateDB::LogEntry.create(type: "info", message: "This is a test")
     end
   end
 end

migrations/lib/converters/example/steps/step2.rb

@@ -14,7 +14,7 @@ module Migrations::Converters::Example
       step.log_warning("Test", details: item) if item.in?([3, 7, 9])
       step.log_error("Test", details: item) if item.in?([6, 10])
 
-      IntermediateDB::LogEntry.create!(type: "info", message: "Step2 - #{item}")
+      IntermediateDB::LogEntry.create(type: "info", message: "Step2 - #{item}")
     end
   end
 end

migrations/lib/converters/example/steps/step3.rb

@@ -17,7 +17,7 @@ module Migrations::Converters::Example
 
       step.log_warning("Test", details: item) if item[:counter] > 10 && item[:counter] < 20
 
-      IntermediateDB::LogEntry.create!(type: "info", message: "Step3 - #{item[:counter]}")
+      IntermediateDB::LogEntry.create(type: "info", message: "Step3 - #{item[:counter]}")
     end
   end
 end

migrations/lib/database.rb

@@ -59,5 +59,17 @@ module Migrations
       return nil if value.nil?
       ::Oj.dump(value, mode: :compat)
     end
+
+    def self.to_date(text)
+      text.present? ? Date.parse(text) : nil
+    end
+
+    def self.to_datetime(text)
+      text.present? ? DateTime.parse(text) : nil
+    end
+
+    def self.to_boolean(value)
+      value == 1
+    end
   end
 end

migrations/lib/database/connection.rb

@@ -8,6 +8,7 @@ module Migrations::Database
     PREPARED_STATEMENT_CACHE_SIZE = 5
 
     def self.open_database(path:)
+      path = File.expand_path(path, ::Migrations.root_path)
       FileUtils.mkdir_p(File.dirname(path))
 
       db = ::Extralite::Database.new(path)
@@ -25,7 +26,7 @@ module Migrations::Database
     attr_reader :db, :path
 
     def initialize(path:, transaction_batch_size: TRANSACTION_BATCH_SIZE)
-      @path = path
+      @path = File.expand_path(path, ::Migrations.root_path)
       @transaction_batch_size = transaction_batch_size
       @db = self.class.open_database(path:)
       @statement_counter = 0
@@ -54,24 +55,34 @@ module Migrations::Database
 
       if (@statement_counter += 1) >= @transaction_batch_size
         commit_transaction
+      end
+    end
+
+    def query(sql, *parameters, &block)
+      @db.query(sql, *parameters, &block)
+    end
+
+    def count(sql, *parameters)
+      @db.query_single_splat(sql, *parameters)
+    end
+
+    def execute(sql, *parameters)
+      @db.execute(sql, *parameters)
+    end
+
+    def begin_transaction
+      @db.execute("BEGIN DEFERRED TRANSACTION") unless @db.transaction_active?
+    end
+
+    def commit_transaction
+      if @db.transaction_active?
+        @db.execute("COMMIT")
         @statement_counter = 0
       end
     end
 
     private
 
-    def begin_transaction
-      return if @db.transaction_active?
-
-      @db.execute("BEGIN DEFERRED TRANSACTION")
-    end
-
-    def commit_transaction
-      return unless @db.transaction_active?
-
-      @db.execute("COMMIT")
-    end
-
     def close_connection(keep_path:)
       return if @db.nil?
 

migrations/lib/database/intermediate_db/log_entry.rb

@@ -11,7 +11,7 @@ module Migrations::Database::IntermediateDB
       VALUES (?, ?, ?, ?, ?)
     SQL
 
-    def self.create!(created_at: Time.now, type:, message:, exception: nil, details: nil)
+    def self.create(created_at: Time.now, type:, message:, exception: nil, details: nil)
       ::Migrations::Database::IntermediateDB.insert(
         SQL,
         ::Migrations::Database.format_datetime(created_at),

migrations/lib/database/intermediate_db/upload.rb

@@ -17,8 +17,7 @@ module Migrations::Database::IntermediateDB
       VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?)
     SQL
 
-    class << self
-      def create_for_file!(
+    def self.create_for_file(
       path:,
       filename: nil,
       type: nil,
@@ -26,7 +25,7 @@ module Migrations::Database::IntermediateDB
       origin: nil,
       user_id: nil
     )
-        create!(
+      create(
         id: ::Migrations::ID.hash(path),
         filename: filename || File.basename(path),
         path:,
@@ -37,8 +36,8 @@ module Migrations::Database::IntermediateDB
       )
     end
 
-      def create_for_url!(url:, filename:, type: nil, description: nil, origin: nil, user_id: nil)
-        create!(
+    def self.create_for_url(url:, filename:, type: nil, description: nil, origin: nil, user_id: nil)
+      create(
         id: ::Migrations::ID.hash(url),
         filename:,
         url:,
@@ -49,8 +48,15 @@ module Migrations::Database::IntermediateDB
       )
     end
 
-      def create_for_data!(data:, filename:, type: nil, description: nil, origin: nil, user_id: nil)
-        create!(
+    def self.create_for_data(
+      data:,
+      filename:,
+      type: nil,
+      description: nil,
+      origin: nil,
+      user_id: nil
+    )
+      create(
         id: ::Migrations::ID.hash(data),
         filename:,
         data: ::Migrations::Database.to_blob(data),
@@ -61,9 +67,7 @@ module Migrations::Database::IntermediateDB
       )
     end
 
-      private
-
-      def create!(
+    def self.create(
       id:,
       filename:,
       path: nil,
@@ -88,5 +92,4 @@ module Migrations::Database::IntermediateDB
       )
     end
   end
-  end
 end

migrations/lib/database/migrator.rb

@@ -3,7 +3,7 @@
 module Migrations::Database
   class Migrator
     def initialize(db_path)
-      @db_path = db_path
+      @db_path = File.expand_path(db_path, ::Migrations.root_path)
       @db = nil
     end
 
@@ -72,7 +72,7 @@ module Migrations::Database
 
           @db.transaction do
             @db.execute(sql)
-            @db.execute(<<~SQL, path: relative_path, sql_hash: sql_hash)
+            @db.execute(<<~SQL, path: relative_path, sql_hash:)
               INSERT INTO schema_migrations (path, created_at, sql_hash)
               VALUES (:path, datetime('now'), :sql_hash)
             SQL

migrations/lib/uploader/tasks/fixer.rb

@@ -71,7 +71,7 @@ module Migrations::Uploader
       end
 
       def update_status_queue(row, upload, status)
-        status_queue << { id: row[:id], upload_id: upload[:id], status: status }
+        status_queue << { id: row[:id], upload_id: upload[:id], status: }
       end
 
       def log_status

migrations/migrations.rb

@@ -7,21 +7,21 @@ require "active_support"
 require "active_support/core_ext"
 require "zeitwerk"
 
-require_relative "converters"
+require_relative "lib/converters"
 
 module Migrations
   class NoSettingsFound < StandardError
   end
 
   def self.root_path
-    @root_path ||= File.expand_path("..", __dir__)
+    @root_path ||= __dir__
   end
 
   def self.load_rails_environment(quiet: false)
-    message = "Loading Rails environment ..."
+    message = "Loading Rails environment..."
     print message if !quiet
 
-    rails_root = File.expand_path("../..", __dir__)
+    rails_root = File.expand_path("..", __dir__)
     # rubocop:disable Discourse/NoChdir
     Dir.chdir(rails_root) do
       begin
@@ -48,7 +48,9 @@ module Migrations
       {
         "cli" => "CLI",
         "id" => "ID",
+        "discourse_db" => "DiscourseDB",
         "intermediate_db" => "IntermediateDB",
+        "mappings_db" => "MappingsDB",
         "uploads_db" => "UploadsDB",
       },
     )
@@ -64,7 +66,7 @@ module Migrations
 
       Dir[File.join(converter_path, "**", "*")].each do |subdirectory|
         next unless File.directory?(subdirectory)
-        loader.push_dir(subdirectory, namespace: namespace)
+        loader.push_dir(subdirectory, namespace:)
       end
     end
 

migrations/scripts/benchmarks/hash_vs_data.rb

@@ -20,7 +20,7 @@ User = Data.define(:id, :name, :email, :created_at)
 USER_HASH =
   begin
     name = SecureRandom.hex(10)
-    { id: 1, name: name, email: "#{name}@example.com", created_at: Time.now.utc.iso8601 }
+    { id: 1, name:, email: "#{name}@example.com", created_at: Time.now.utc.iso8601 }
   end
 
 USER_DATA =

migrations/scripts/benchmarks/parameter_binding.rb

@@ -41,7 +41,7 @@ end
 def create_users(row_count)
   row_count.times.map do |id|
     name = SecureRandom.hex(10)
-    { id: id, name: name, email: "#{name}@example.com", created_at: Time.now.utc.iso8601 }
+    { id:, name:, email: "#{name}@example.com", created_at: Time.now.utc.iso8601 }
   end
 end
 

migrations/spec/lib/converters/base/step_tracker_spec.rb

@@ -3,7 +3,7 @@
 RSpec.describe ::Migrations::Converters::Base::StepTracker do
   subject(:tracker) { described_class.new }
 
-  before { allow(::Migrations::Database::IntermediateDB::LogEntry).to receive(:create!) }
+  before { allow(::Migrations::Database::IntermediateDB::LogEntry).to receive(:create) }
 
   describe "#initialize" do
     it "starts at the correct values" do
@@ -75,7 +75,7 @@ RSpec.describe ::Migrations::Converters::Base::StepTracker do
     it "logs an info message" do
       tracker.log_info("Info message")
 
-      expect(::Migrations::Database::IntermediateDB::LogEntry).to have_received(:create!).with(
+      expect(::Migrations::Database::IntermediateDB::LogEntry).to have_received(:create).with(
         type: ::Migrations::Database::IntermediateDB::LogEntry::INFO,
         message: "Info message",
         exception: nil,
@@ -86,7 +86,7 @@ RSpec.describe ::Migrations::Converters::Base::StepTracker do
     it "logs an info message with details" do
       tracker.log_info("Info message", details: { key: "value" })
 
-      expect(::Migrations::Database::IntermediateDB::LogEntry).to have_received(:create!).with(
+      expect(::Migrations::Database::IntermediateDB::LogEntry).to have_received(:create).with(
         type: ::Migrations::Database::IntermediateDB::LogEntry::INFO,
         message: "Info message",
         exception: nil,
@@ -103,7 +103,7 @@ RSpec.describe ::Migrations::Converters::Base::StepTracker do
         tracker.stats.warning_count
       }.by(1)
 
-      expect(::Migrations::Database::IntermediateDB::LogEntry).to have_received(:create!).with(
+      expect(::Migrations::Database::IntermediateDB::LogEntry).to have_received(:create).with(
         type: ::Migrations::Database::IntermediateDB::LogEntry::WARNING,
         message: "Warning message",
         exception: nil,
@@ -115,13 +115,13 @@ RSpec.describe ::Migrations::Converters::Base::StepTracker do
       exception = StandardError.new("Warning exception")
 
       expect {
-        tracker.log_warning("Warning message", exception: exception, details: { key: "value" })
+        tracker.log_warning("Warning message", exception:, details: { key: "value" })
       }.to change { tracker.stats.warning_count }.by(1)
 
-      expect(::Migrations::Database::IntermediateDB::LogEntry).to have_received(:create!).with(
+      expect(::Migrations::Database::IntermediateDB::LogEntry).to have_received(:create).with(
         type: ::Migrations::Database::IntermediateDB::LogEntry::WARNING,
         message: "Warning message",
-        exception: exception,
+        exception:,
         details: {
           key: "value",
         },
@@ -133,7 +133,7 @@ RSpec.describe ::Migrations::Converters::Base::StepTracker do
     it "logs an error message and increments error_count" do
       expect { tracker.log_error("Error message") }.to change { tracker.stats.error_count }.by(1)
 
-      expect(::Migrations::Database::IntermediateDB::LogEntry).to have_received(:create!).with(
+      expect(::Migrations::Database::IntermediateDB::LogEntry).to have_received(:create).with(
         type: ::Migrations::Database::IntermediateDB::LogEntry::ERROR,
         message: "Error message",
         exception: nil,
@@ -145,13 +145,13 @@ RSpec.describe ::Migrations::Converters::Base::StepTracker do
       exception = StandardError.new("Error exception")
 
       expect {
-        tracker.log_error("Error message", exception: exception, details: { key: "value" })
+        tracker.log_error("Error message", exception:, details: { key: "value" })
       }.to change { tracker.stats.error_count }.by(1)
 
-      expect(::Migrations::Database::IntermediateDB::LogEntry).to have_received(:create!).with(
+      expect(::Migrations::Database::IntermediateDB::LogEntry).to have_received(:create).with(
         type: ::Migrations::Database::IntermediateDB::LogEntry::ERROR,
         message: "Error message",
-        exception: exception,
+        exception:,
         details: {
           key: "value",
         },

migrations/spec/lib/database/intermediate_db_spec.rb

@@ -94,4 +94,25 @@ RSpec.describe ::Migrations::Database::IntermediateDB do
       end
     end
   end
+
+  it "checks that manually created entities are tested" do
+    Dir[
+      File.join(::Migrations.root_path, "lib", "database", "intermediate_db", "*.rb")
+    ].each do |path|
+      next if File.read(path).include?("auto-generated")
+
+      spec_path =
+        File.join(
+          ::Migrations.root_path,
+          "spec",
+          "lib",
+          "database",
+          "intermediate_db",
+          "#{File.basename(path, ".rb")}_spec.rb",
+        )
+
+      expect(File.exist?(spec_path)).to eq(true), "#{spec_path} is missing"
+      expect(File.read(spec_path)).to include('it_behaves_like "a database entity"')
+    end
+  end
 end

migrations/spec/lib/database/migrator_spec.rb

@@ -9,15 +9,7 @@ RSpec.describe ::Migrations::Database::Migrator do
     ignore_errors: false
   )
     if migrations_directory
-      migrations_path =
-        File.join(
-          ::Migrations.root_path,
-          "spec",
-          "support",
-          "fixtures",
-          "schema",
-          migrations_directory,
-        )
+      migrations_path = File.join(fixture_root, "schema", migrations_directory)
     end
 
     temp_path = storage_path = Dir.mktmpdir if storage_path.nil?

migrations/spec/rails_helper.rb

@@ -3,7 +3,7 @@
 # we need to require the rails_helper from core to load the Rails environment
 require_relative "../../spec/rails_helper"
 
-require_relative "../lib/migrations"
+require_relative "../migrations"
 
 ::Migrations.configure_zeitwerk
 ::Migrations.enable_i18n

migrations/spec/support/helpers.rb

@@ -5,3 +5,7 @@ def reset_memoization(instance, *variables)
     instance.remove_instance_variable(var) if instance.instance_variable_defined?(var)
   end
 end
+
+def fixture_root
+  @fixture_root ||= File.join(::Migrations.root_path, "spec", "support", "fixtures")
+end

migrations/spec/support/shared_examples/database_entity.rb

@@ -5,7 +5,7 @@ RSpec.shared_examples "a database entity" do
     expect(subject).to have_constant(:SQL)
   end
 
-  it "responds to .create!" do
-    expect(subject).to respond_to(:create!)
+  it "responds to .create" do
+    expect(subject).to respond_to(:create)
   end
 end