rails/railties/test/application/rake/migrations_test.rb

# frozen_string_literal: true

require "isolation/abstract_unit"

module ApplicationTests
  module RakeTests
    class RakeMigrationsTest < ActiveSupport::TestCase
      def setup
        build_app
        FileUtils.rm_rf("#{app_path}/config/environments")
      end

      def teardown
        teardown_app
      end

      test "running migrations with given scope" do
        Dir.chdir(app_path) do
          rails "generate", "model", "user", "username:string", "password:string"

          app_file "db/migrate/01_a_migration.bukkits.rb", <<-MIGRATION
            class AMigration < ActiveRecord::Migration::Current
            end
          MIGRATION

          output = rails("db:migrate", "SCOPE=bukkits")
          assert_no_match(/create_table\(:users\)/, output)
          assert_no_match(/CreateUsers/, output)
          assert_no_match(/add_column\(:users, :email, :string\)/, output)

          assert_match(/AMigration: migrated/, output)

          output = rails("db:migrate", "SCOPE=bukkits", "VERSION=0")
          assert_no_match(/drop_table\(:users\)/, output)
          assert_no_match(/CreateUsers/, output)
          assert_no_match(/remove_column\(:users, :email\)/, output)

          assert_match(/AMigration: reverted/, output)
        end
      end

      test "migration with empty version" do
        Dir.chdir(app_path) do
          output = rails("db:migrate", "VERSION=", allow_failure: true)
          assert_match(/Empty VERSION provided/, output)

          output = rails("db:migrate:redo", "VERSION=", allow_failure: true)
          assert_match(/Empty VERSION provided/, output)

          output = rails("db:migrate:up", "VERSION=", allow_failure: true)
          assert_match(/VERSION is required/, output)

          output = rails("db:migrate:up", allow_failure: true)
          assert_match(/VERSION is required/, output)

          output = rails("db:migrate:down", "VERSION=", allow_failure: true)
          assert_match(/VERSION is required - To go down one migration, use db:rollback/, output)

          output = rails("db:migrate:down", allow_failure: true)
          assert_match(/VERSION is required - To go down one migration, use db:rollback/, output)
        end
      end

      test "model and migration generator with change syntax" do
        Dir.chdir(app_path) do
          rails "generate", "model", "user", "username:string", "password:string"
          rails "generate", "migration", "add_email_to_users", "email:string"

          output = rails("db:migrate")
          assert_match(/create_table\(:users\)/, output)
          assert_match(/CreateUsers: migrated/, output)
          assert_match(/add_column\(:users, :email, :string\)/, output)
          assert_match(/AddEmailToUsers: migrated/, output)

          output = rails("db:rollback", "STEP=2")
          assert_match(/drop_table\(:users\)/, output)
          assert_match(/CreateUsers: reverted/, output)
          assert_match(/remove_column\(:users, :email, :string\)/, output)
          assert_match(/AddEmailToUsers: reverted/, output)
        end
      end

      test "migration status when schema migrations table is not present" do
        output = rails("db:migrate:status", allow_failure: true)
        assert_equal "Schema migrations table does not exist yet.\n", output
      end

      test "migration status" do
        Dir.chdir(app_path) do
          rails "generate", "model", "user", "username:string", "password:string"
          rails "generate", "migration", "add_email_to_users", "email:string"
          rails "db:migrate"

          output = rails("db:migrate:status")

          assert_match(/up\s+\d{14}\s+Create users/, output)
          assert_match(/up\s+\d{14}\s+Add email to users/, output)

          rails "db:rollback", "STEP=1"
          output = rails("db:migrate:status")

          assert_match(/up\s+\d{14}\s+Create users/, output)
          assert_match(/down\s+\d{14}\s+Add email to users/, output)
        end
      end

      test "migration status without timestamps" do
        add_to_config("config.active_record.timestamped_migrations = false")

        Dir.chdir(app_path) do
          rails "generate", "model", "user", "username:string", "password:string"
          rails "generate", "migration", "add_email_to_users", "email:string"
          rails "db:migrate"

          output = rails("db:migrate:status")

          assert_match(/up\s+\d{3,}\s+Create users/, output)
          assert_match(/up\s+\d{3,}\s+Add email to users/, output)

          rails "db:rollback", "STEP=1"
          output = rails("db:migrate:status")

          assert_match(/up\s+\d{3,}\s+Create users/, output)
          assert_match(/down\s+\d{3,}\s+Add email to users/, output)
        end
      end

      test "migration status after rollback and redo" do
        Dir.chdir(app_path) do
          rails "generate", "model", "user", "username:string", "password:string"
          rails "generate", "migration", "add_email_to_users", "email:string"
          rails "db:migrate"

          output = rails("db:migrate:status")

          assert_match(/up\s+\d{14}\s+Create users/, output)
          assert_match(/up\s+\d{14}\s+Add email to users/, output)

          rails "db:rollback", "STEP=2"
          output = rails("db:migrate:status")

          assert_match(/down\s+\d{14}\s+Create users/, output)
          assert_match(/down\s+\d{14}\s+Add email to users/, output)

          rails "db:migrate:redo"
          output = rails("db:migrate:status")

          assert_match(/up\s+\d{14}\s+Create users/, output)
          assert_match(/up\s+\d{14}\s+Add email to users/, output)
        end
      end

      test "migration status after rollback and forward" do
        Dir.chdir(app_path) do
          rails "generate", "model", "user", "username:string", "password:string"
          rails "generate", "migration", "add_email_to_users", "email:string"
          rails "db:migrate"

          output = rails("db:migrate:status")

          assert_match(/up\s+\d{14}\s+Create users/, output)
          assert_match(/up\s+\d{14}\s+Add email to users/, output)

          rails "db:rollback", "STEP=2"
          output = rails("db:migrate:status")

          assert_match(/down\s+\d{14}\s+Create users/, output)
          assert_match(/down\s+\d{14}\s+Add email to users/, output)

          rails "db:forward", "STEP=2"
          output = rails("db:migrate:status")

          assert_match(/up\s+\d{14}\s+Create users/, output)
          assert_match(/up\s+\d{14}\s+Add email to users/, output)
        end
      end

      test "raise error on any move when current migration does not exist" do
        Dir.chdir(app_path) do
          rails "generate", "model", "user", "username:string", "password:string"
          rails "generate", "migration", "add_email_to_users", "email:string"
          rails "db:migrate"
          `rm db/migrate/*email*.rb`

          output = rails("db:migrate:status")
          assert_match(/up\s+\d{14}\s+Create users/, output)
          assert_match(/up\s+\d{14}\s+\** NO FILE \**/, output)

          output = rails("db:rollback", allow_failure: true)
          assert_match(/rails aborted!/, output)
          assert_match(/ActiveRecord::UnknownMigrationVersionError:/, output)
          assert_match(/No migration with version number\s\d{14}\./, output)

          output = rails("db:migrate:status")
          assert_match(/up\s+\d{14}\s+Create users/, output)
          assert_match(/up\s+\d{14}\s+\** NO FILE \**/, output)

          output = rails("db:forward", allow_failure: true)
          assert_match(/rails aborted!/, output)
          assert_match(/ActiveRecord::UnknownMigrationVersionError:/, output)
          assert_match(/No migration with version number\s\d{14}\./, output)

          output = rails("db:migrate:status")
          assert_match(/up\s+\d{14}\s+Create users/, output)
          assert_match(/up\s+\d{14}\s+\** NO FILE \**/, output)
        end
      end

      test "migration status after rollback and redo without timestamps" do
        add_to_config("config.active_record.timestamped_migrations = false")

        Dir.chdir(app_path) do
          rails "generate", "model", "user", "username:string", "password:string"
          rails "generate", "migration", "add_email_to_users", "email:string"
          rails "db:migrate"

          output = rails("db:migrate:status")

          assert_match(/up\s+\d{3,}\s+Create users/, output)
          assert_match(/up\s+\d{3,}\s+Add email to users/, output)

          rails "db:rollback", "STEP=2"
          output = rails("db:migrate:status")

          assert_match(/down\s+\d{3,}\s+Create users/, output)
          assert_match(/down\s+\d{3,}\s+Add email to users/, output)

          rails "db:migrate:redo"
          output = rails("db:migrate:status")

          assert_match(/up\s+\d{3,}\s+Create users/, output)
          assert_match(/up\s+\d{3,}\s+Add email to users/, output)
        end
      end

      test "running migrations with not timestamp head migration files" do
        Dir.chdir(app_path) do

          app_file "db/migrate/1_one_migration.rb", <<-MIGRATION
            class OneMigration < ActiveRecord::Migration::Current
            end
          MIGRATION

          app_file "db/migrate/02_two_migration.rb", <<-MIGRATION
            class TwoMigration < ActiveRecord::Migration::Current
            end
          MIGRATION

          rails "db:migrate"

          output = rails("db:migrate:status")

          assert_match(/up\s+001\s+One migration/, output)
          assert_match(/up\s+002\s+Two migration/, output)
        end
      end

      test "schema generation when dump_schema_after_migration is set" do
        add_to_config("config.active_record.dump_schema_after_migration = false")

        Dir.chdir(app_path) do
          rails "generate", "model", "book", "title:string"
          output = rails("generate", "model", "author", "name:string")
          version = output =~ %r{[^/]+db/migrate/(\d+)_create_authors\.rb} && $1

          rails "db:migrate", "db:rollback", "db:forward", "db:migrate:up", "db:migrate:down", "VERSION=#{version}"
          assert !File.exist?("db/schema.rb"), "should not dump schema when configured not to"
        end

        add_to_config("config.active_record.dump_schema_after_migration = true")

        Dir.chdir(app_path) do
          rails "generate", "model", "reviews", "book_id:integer"
          rails "db:migrate"

          structure_dump = File.read("db/schema.rb")
          assert_match(/create_table "reviews"/, structure_dump)
        end
      end

      test "default schema generation after migration" do
        Dir.chdir(app_path) do
          rails "generate", "model", "book", "title:string"
          rails "db:migrate"

          structure_dump = File.read("db/schema.rb")
          assert_match(/create_table "books"/, structure_dump)
        end
      end

      test "migration status migrated file is deleted" do
        Dir.chdir(app_path) do
          rails "generate", "model", "user", "username:string", "password:string"
          rails "generate", "migration", "add_email_to_users", "email:string"
          rails "db:migrate"
          `rm db/migrate/*email*.rb`

          output = rails("db:migrate:status")

          assert_match(/up\s+\d{14}\s+Create users/, output)
          assert_match(/up\s+\d{14}\s+\** NO FILE \**/, output)
        end
      end
    end
  end
end