diff options
Diffstat (limited to 'activerecord/test/cases/migrator_test.rb')
-rw-r--r-- | activerecord/test/cases/migrator_test.rb | 377 |
1 files changed, 377 insertions, 0 deletions
diff --git a/activerecord/test/cases/migrator_test.rb b/activerecord/test/cases/migrator_test.rb new file mode 100644 index 0000000000..1e16addcf3 --- /dev/null +++ b/activerecord/test/cases/migrator_test.rb @@ -0,0 +1,377 @@ +require "cases/helper" +require "cases/migration/helper" + +module ActiveRecord + class MigratorTest < ActiveRecord::TestCase + self.use_transactional_fixtures = false + + # Use this class to sense if migrations have gone + # up or down. + class Sensor < ActiveRecord::Migration + 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 + ActiveRecord::SchemaMigration.create_table + ActiveRecord::SchemaMigration.delete_all rescue nil + end + + def teardown + super + ActiveRecord::SchemaMigration.delete_all rescue nil + end + + def test_migrator_with_duplicate_names + assert_raises(ActiveRecord::DuplicateMigrationNameError, "Multiple migrations have the name Chunky") do + list = [Migration.new('Chunky'), Migration.new('Chunky')] + ActiveRecord::Migrator.new(:up, list) + end + end + + def test_migrator_with_duplicate_versions + assert_raises(ActiveRecord::DuplicateMigrationVersionError) do + list = [Migration.new('Foo', 1), Migration.new('Bar', 1)] + ActiveRecord::Migrator.new(:up, list) + end + end + + def test_migrator_with_missing_version_numbers + assert_raises(ActiveRecord::UnknownMigrationVersionError) do + list = [Migration.new('Foo', 1), Migration.new('Bar', 2)] + ActiveRecord::Migrator.new(:up, list, 3).run + end + end + + def test_finds_migrations + migrations = ActiveRecord::Migrator.migrations(MIGRATIONS_ROOT + "/valid") + + [[1, 'ValidPeopleHaveLastNames'], [2, 'WeNeedReminders'], [3, 'InnocentJointable']].each_with_index do |pair, i| + assert_equal migrations[i].version, pair.first + assert_equal migrations[i].name, pair.last + end + end + + def test_finds_migrations_in_subdirectories + migrations = ActiveRecord::Migrator.migrations(MIGRATIONS_ROOT + "/valid_with_subdirectories") + + [[1, 'ValidPeopleHaveLastNames'], [2, 'WeNeedReminders'], [3, 'InnocentJointable']].each_with_index do |pair, i| + assert_equal migrations[i].version, pair.first + assert_equal migrations[i].name, pair.last + end + end + + def test_finds_migrations_from_two_directories + directories = [MIGRATIONS_ROOT + '/valid_with_timestamps', MIGRATIONS_ROOT + '/to_copy_with_timestamps'] + migrations = ActiveRecord::Migrator.migrations directories + + [[20090101010101, "PeopleHaveHobbies"], + [20090101010202, "PeopleHaveDescriptions"], + [20100101010101, "ValidWithTimestampsPeopleHaveLastNames"], + [20100201010101, "ValidWithTimestampsWeNeedReminders"], + [20100301010101, "ValidWithTimestampsInnocentJointable"]].each_with_index do |pair, i| + assert_equal pair.first, migrations[i].version + assert_equal pair.last, migrations[i].name + end + end + + def test_deprecated_constructor + assert_deprecated do + ActiveRecord::Migrator.new(:up, MIGRATIONS_ROOT + "/valid") + end + end + + def test_relative_migrations + list = Dir.chdir(MIGRATIONS_ROOT) do + ActiveRecord::Migrator.migrations("valid/") + end + + migration_proxy = list.find { |item| + item.name == 'ValidPeopleHaveLastNames' + } + assert migration_proxy, 'should find pending migration' + end + + def test_finds_pending_migrations + ActiveRecord::SchemaMigration.create!(:version => '1') + migration_list = [ Migration.new('foo', 1), Migration.new('bar', 3) ] + migrations = ActiveRecord::Migrator.new(:up, migration_list).pending_migrations + + assert_equal 1, migrations.size + assert_equal migration_list.last, migrations.first + end + + def test_migrator_interleaved_migrations + pass_one = [Sensor.new('One', 1)] + + ActiveRecord::Migrator.new(:up, pass_one).migrate + assert pass_one.first.went_up + refute pass_one.first.went_down + + pass_two = [Sensor.new('One', 1), Sensor.new('Three', 3)] + ActiveRecord::Migrator.new(:up, pass_two).migrate + refute pass_two[0].went_up + assert pass_two[1].went_up + assert pass_two.all? { |x| !x.went_down } + + pass_three = [Sensor.new('One', 1), + Sensor.new('Two', 2), + Sensor.new('Three', 3)] + + ActiveRecord::Migrator.new(:down, pass_three).migrate + assert pass_three[0].went_down + refute pass_three[1].went_down + assert pass_three[2].went_down + end + + def test_up_calls_up + migrations = [Sensor.new(nil, 0), Sensor.new(nil, 1), Sensor.new(nil, 2)] + ActiveRecord::Migrator.new(:up, migrations).migrate + assert migrations.all? { |m| m.went_up } + assert migrations.all? { |m| !m.went_down } + assert_equal 2, ActiveRecord::Migrator.current_version + end + + def test_down_calls_down + test_up_calls_up + + migrations = [Sensor.new(nil, 0), Sensor.new(nil, 1), Sensor.new(nil, 2)] + ActiveRecord::Migrator.new(:down, migrations).migrate + assert migrations.all? { |m| !m.went_up } + assert migrations.all? { |m| m.went_down } + assert_equal 0, ActiveRecord::Migrator.current_version + end + + def test_current_version + ActiveRecord::SchemaMigration.create!(:version => '1000') + assert_equal 1000, ActiveRecord::Migrator.current_version + end + + def test_migrator_one_up + calls, migrations = sensors(3) + + ActiveRecord::Migrator.new(:up, migrations, 1).migrate + assert_equal [[:up, 1]], calls + calls.clear + + ActiveRecord::Migrator.new(:up, migrations, 2).migrate + assert_equal [[:up, 2]], calls + end + + def test_migrator_one_down + calls, migrations = sensors(3) + + ActiveRecord::Migrator.new(:up, migrations).migrate + assert_equal [[:up, 1], [:up, 2], [:up, 3]], calls + calls.clear + + ActiveRecord::Migrator.new(:down, migrations, 1).migrate + + assert_equal [[:down, 3], [:down, 2]], calls + end + + def test_migrator_one_up_one_down + calls, migrations = sensors(3) + + ActiveRecord::Migrator.new(:up, migrations, 1).migrate + assert_equal [[:up, 1]], calls + calls.clear + + ActiveRecord::Migrator.new(:down, migrations, 0).migrate + assert_equal [[:down, 1]], calls + end + + def test_migrator_double_up + calls, migrations = sensors(3) + assert_equal(0, ActiveRecord::Migrator.current_version) + + ActiveRecord::Migrator.new(:up, migrations, 1).migrate + assert_equal [[:up, 1]], calls + calls.clear + + ActiveRecord::Migrator.new(:up, migrations, 1).migrate + assert_equal [], calls + end + + def test_migrator_double_down + calls, migrations = sensors(3) + + assert_equal(0, ActiveRecord::Migrator.current_version) + + ActiveRecord::Migrator.new(:up, migrations, 1).run + assert_equal [[:up, 1]], calls + calls.clear + + ActiveRecord::Migrator.new(:down, migrations, 1).run + assert_equal [[:down, 1]], calls + calls.clear + + ActiveRecord::Migrator.new(:down, migrations, 1).run + assert_equal [], calls + + assert_equal(0, ActiveRecord::Migrator.current_version) + end + + def test_migrator_verbosity + _, migrations = sensors(3) + + ActiveRecord::Migrator.new(:up, migrations, 1).migrate + assert_not_equal 0, ActiveRecord::Migration.message_count + + ActiveRecord::Migration.message_count = 0 + + ActiveRecord::Migrator.new(:down, migrations, 0).migrate + assert_not_equal 0, ActiveRecord::Migration.message_count + ActiveRecord::Migration.message_count = 0 + end + + def test_migrator_verbosity_off + _, migrations = sensors(3) + + ActiveRecord::Migration.message_count = 0 + ActiveRecord::Migration.verbose = false + ActiveRecord::Migrator.new(:up, migrations, 1).migrate + assert_equal 0, ActiveRecord::Migration.message_count + ActiveRecord::Migrator.new(:down, migrations, 0).migrate + assert_equal 0, ActiveRecord::Migration.message_count + end + + def test_target_version_zero_should_run_only_once + calls, migrations = sensors(3) + + # migrate up to 1 + ActiveRecord::Migrator.new(:up, migrations, 1).migrate + assert_equal [[:up, 1]], calls + calls.clear + + # migrate down to 0 + ActiveRecord::Migrator.new(:down, migrations, 0).migrate + assert_equal [[:down, 1]], calls + calls.clear + + # migrate down to 0 again + ActiveRecord::Migrator.new(:down, migrations, 0).migrate + assert_equal [], calls + end + + def test_migrator_going_down_due_to_version_target + calls, migrator = migrator_class(3) + + migrator.up("valid", 1) + assert_equal [[:up, 1]], calls + calls.clear + + migrator.migrate("valid", 0) + assert_equal [[:down, 1]], calls + calls.clear + + migrator.migrate("valid") + assert_equal [[:up, 1], [:up, 2], [:up, 3]], calls + end + + def test_migrator_rollback + _, migrator = migrator_class(3) + + migrator.migrate("valid") + assert_equal(3, ActiveRecord::Migrator.current_version) + + migrator.rollback("valid") + assert_equal(2, ActiveRecord::Migrator.current_version) + + migrator.rollback("valid") + assert_equal(1, ActiveRecord::Migrator.current_version) + + migrator.rollback("valid") + assert_equal(0, ActiveRecord::Migrator.current_version) + + migrator.rollback("valid") + assert_equal(0, ActiveRecord::Migrator.current_version) + end + + def test_migrator_db_has_no_schema_migrations_table + _, migrator = migrator_class(3) + + ActiveRecord::Base.connection.execute("DROP TABLE schema_migrations") + refute ActiveRecord::Base.connection.table_exists?('schema_migrations') + migrator.migrate("valid", 1) + assert ActiveRecord::Base.connection.table_exists?('schema_migrations') + end + + def test_migrator_forward + _, migrator = migrator_class(3) + migrator.migrate("/valid", 1) + assert_equal(1, ActiveRecord::Migrator.current_version) + + migrator.forward("/valid", 2) + assert_equal(3, ActiveRecord::Migrator.current_version) + + migrator.forward("/valid") + assert_equal(3, ActiveRecord::Migrator.current_version) + end + + def test_only_loads_pending_migrations + # migrate up to 1 + ActiveRecord::SchemaMigration.create!(:version => '1') + + calls, migrator = migrator_class(3) + migrator.migrate("valid", nil) + + assert_equal [[:up, 2], [:up, 3]], calls + end + + def test_get_all_versions + _, migrator = migrator_class(3) + + migrator.migrate("valid") + assert_equal([1,2,3], ActiveRecord::Migrator.get_all_versions) + + migrator.rollback("valid") + assert_equal([1,2], ActiveRecord::Migrator.get_all_versions) + + migrator.rollback("valid") + assert_equal([1], ActiveRecord::Migrator.get_all_versions) + + migrator.rollback("valid") + assert_equal([], ActiveRecord::Migrator.get_all_versions) + end + + private + def m(name, version, &block) + x = Sensor.new name, version + x.extend(Module.new { + define_method(:up) { block.call(:up, x); super() } + define_method(:down) { block.call(: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(Migrator).extend(Module.new { + define_method(:migrations) { |paths| + migrations + } + }) + [calls, migrator] + end + end +end |