diff options
Diffstat (limited to 'activerecord/test/cases/multi_db_migrator_test.rb')
| -rw-r--r-- | activerecord/test/cases/multi_db_migrator_test.rb | 218 |
1 files changed, 218 insertions, 0 deletions
diff --git a/activerecord/test/cases/multi_db_migrator_test.rb b/activerecord/test/cases/multi_db_migrator_test.rb new file mode 100644 index 0000000000..650b3af6f0 --- /dev/null +++ b/activerecord/test/cases/multi_db_migrator_test.rb @@ -0,0 +1,218 @@ +# frozen_string_literal: true + +require "cases/helper" +require "cases/migration/helper" + +class MultiDbMigratorTest < ActiveRecord::TestCase + self.use_transactional_tests = false + + # Use this class to sense if migrations have gone + # up or down. + class Sensor < ActiveRecord::Migration::Current + attr_reader :went_up, :went_down + + def initialize(name = self.class.name, version = nil) + super + @went_up = false + @went_down = false + end + + def up; @went_up = true; end + def down; @went_down = true; end + end + + def setup + super + @connection_a = ActiveRecord::Base.connection + @connection_b = ARUnit2Model.connection + + @connection_a.schema_migration.create_table + @connection_b.schema_migration.create_table + + @connection_a.schema_migration.delete_all rescue nil + @connection_b.schema_migration.delete_all rescue nil + + @path_a = MIGRATIONS_ROOT + "/valid" + @path_b = MIGRATIONS_ROOT + "/to_copy" + + @schema_migration_a = @connection_a.schema_migration + @migrations_a = ActiveRecord::MigrationContext.new(@path_a, @schema_migration_a).migrations + @schema_migration_b = @connection_b.schema_migration + @migrations_b = ActiveRecord::MigrationContext.new(@path_b, @schema_migration_b).migrations + + @migrations_a_list = [[1, "ValidPeopleHaveLastNames"], [2, "WeNeedReminders"], [3, "InnocentJointable"]] + @migrations_b_list = [[1, "PeopleHaveHobbies"], [2, "PeopleHaveDescriptions"]] + + @verbose_was = ActiveRecord::Migration.verbose + + ActiveRecord::Migration.message_count = 0 + ActiveRecord::Migration.class_eval do + undef :puts + def puts(*) + ActiveRecord::Migration.message_count += 1 + end + end + end + + teardown do + @connection_a.schema_migration.delete_all rescue nil + @connection_b.schema_migration.delete_all rescue nil + + ActiveRecord::Migration.verbose = @verbose_was + ActiveRecord::Migration.class_eval do + undef :puts + def puts(*) + super + end + end + end + + def test_finds_migrations + @migrations_a_list.each_with_index do |pair, i| + assert_equal @migrations_a[i].version, pair.first + assert_equal @migrations_a[i].name, pair.last + end + + @migrations_b_list.each_with_index do |pair, i| + assert_equal @migrations_b[i].version, pair.first + assert_equal @migrations_b[i].name, pair.last + end + end + + def test_migrations_status + @schema_migration_a.create(version: 2) + @schema_migration_a.create(version: 10) + + assert_equal [ + ["down", "001", "Valid people have last names"], + ["up", "002", "We need reminders"], + ["down", "003", "Innocent jointable"], + ["up", "010", "********** NO FILE **********"], + ], ActiveRecord::MigrationContext.new(@path_a, @schema_migration_a).migrations_status + + @schema_migration_b.create(version: 4) + + assert_equal [ + ["down", "001", "People have hobbies"], + ["down", "002", "People have descriptions"], + ["up", "004", "********** NO FILE **********"] + ], ActiveRecord::MigrationContext.new(@path_b, @schema_migration_b).migrations_status + end + + def test_get_all_versions + _, migrator_a = migrator_class(3) + migrator_a = migrator_a.new(@path_a, @schema_migration_a) + + migrator_a.migrate + assert_equal([1, 2, 3], migrator_a.get_all_versions) + + migrator_a.rollback + assert_equal([1, 2], migrator_a.get_all_versions) + + migrator_a.rollback + assert_equal([1], migrator_a.get_all_versions) + + migrator_a.rollback + assert_equal([], migrator_a.get_all_versions) + + _, migrator_b = migrator_class(2) + migrator_b = migrator_b.new(@path_b, @schema_migration_b) + + migrator_b.migrate + assert_equal([1, 2], migrator_b.get_all_versions) + + migrator_b.rollback + assert_equal([1], migrator_b.get_all_versions) + + migrator_b.rollback + assert_equal([], migrator_b.get_all_versions) + end + + def test_finds_pending_migrations + @schema_migration_a.create!(version: "1") + migration_list_a = [ActiveRecord::Migration.new("foo", 1), ActiveRecord::Migration.new("bar", 3)] + migrations_a = ActiveRecord::Migrator.new(:up, migration_list_a, @schema_migration_a).pending_migrations + + assert_equal 1, migrations_a.size + assert_equal migration_list_a.last, migrations_a.first + + @schema_migration_b.create!(version: "1") + migration_list_b = [ActiveRecord::Migration.new("foo", 1), ActiveRecord::Migration.new("bar", 3)] + migrations_b = ActiveRecord::Migrator.new(:up, migration_list_b, @schema_migration_b).pending_migrations + + assert_equal 1, migrations_b.size + assert_equal migration_list_b.last, migrations_b.first + end + + def test_migrator_db_has_no_schema_migrations_table + _, migrator = migrator_class(3) + migrator = migrator.new(@path_a, @schema_migration_a) + + @schema_migration_a.drop_table + assert_not @connection_a.table_exists?("schema_migrations") + migrator.migrate(1) + assert @connection_a.table_exists?("schema_migrations") + + _, migrator = migrator_class(3) + migrator = migrator.new(@path_b, @schema_migration_b) + + @schema_migration_b.drop_table + assert_not @connection_b.table_exists?("schema_migrations") + migrator.migrate(1) + assert @connection_b.table_exists?("schema_migrations") + end + + def test_migrator_forward + _, migrator = migrator_class(3) + migrator = migrator.new(@path_a, @schema_migration_a) + migrator.migrate(1) + assert_equal(1, migrator.current_version) + + migrator.forward(2) + assert_equal(3, migrator.current_version) + + migrator.forward + assert_equal(3, migrator.current_version) + + _, migrator_b = migrator_class(3) + migrator_b = migrator_b.new(@path_b, @schema_migration_b) + migrator_b.migrate(1) + assert_equal(1, migrator_b.current_version) + + migrator_b.forward(2) + assert_equal(3, migrator_b.current_version) + + migrator_b.forward + assert_equal(3, migrator_b.current_version) + end + + private + def m(name, version) + x = Sensor.new name, version + x.extend(Module.new { + define_method(:up) { yield(:up, x); super() } + define_method(:down) { yield(:down, x); super() } + }) if block_given? + end + + def sensors(count) + calls = [] + migrations = count.times.map { |i| + m(nil, i + 1) { |c, migration| + calls << [c, migration.version] + } + } + [calls, migrations] + end + + def migrator_class(count) + calls, migrations = sensors(count) + + migrator = Class.new(ActiveRecord::MigrationContext) { + define_method(:migrations) { |*| + migrations + } + } + [calls, migrator] + end +end |