Add additional raise UnknownMigrationVersionError

Raise error on the movement of migrations
when the current migration does not exist.

activerecord/CHANGELOG.md

@@ -1,3 +1,8 @@
*   Raise error `UnknownMigrationVersionError` on the movement of migrations
    when the current migration does not exist.

    *bogdanvlviv*

*   Fix `bin/rails db:forward` first migration.

    *bogdanvlviv*

activerecord/lib/active_record/migration.rb

@@ -1105,18 +1105,20 @@ def migration_files(paths)
      def move(direction, migrations_paths, steps)
        migrator = new(direction, migrations(migrations_paths))

        if current_version != 0 && !migrator.current_migration
          raise UnknownMigrationVersionError.new(current_version)
        end

        start_index =
          if current_version == 0
            0
          else
            migrator.migrations.index(migrator.current_migration)
          end

        if start_index
          finish = migrator.migrations[start_index + steps]
          version = finish ? finish.version : 0
          send(direction, migrations_paths, version)
        end
        finish = migrator.migrations[start_index + steps]
        version = finish ? finish.version : 0
        send(direction, migrations_paths, version)
      end
    end

railties/test/application/rake/migrations_test.rb

@@ -167,6 +167,37 @@ class AMigration < ActiveRecord::Migration::Current
        end
      end

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

          output = `bin/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 = `bin/rails db:rollback 2>&1`
          assert_match(/rails aborted!/, output)
          assert_match(/ActiveRecord::UnknownMigrationVersionError:/, output)
          assert_match(/No migration with version number\s\d{14}\./, output)

          output = `bin/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 = `bin/rails db:forward 2>&1`
          assert_match(/rails aborted!/, output)
          assert_match(/ActiveRecord::UnknownMigrationVersionError:/, output)
          assert_match(/No migration with version number\s\d{14}\./, output)

          output = `bin/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")

@@ -257,7 +288,6 @@ class TwoMigration < ActiveRecord::Migration::Current
           rm db/migrate/*email*.rb`

          output = `bin/rails db:migrate:status`
          File.write("test.txt", output)

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