mirror of
https://github.com/rails/rails.git
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388 lines
12 KiB
Ruby
388 lines
12 KiB
Ruby
require "cases/helper"
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require "cases/migration/helper"
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class MigratorTest < ActiveRecord::TestCase
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self.use_transactional_tests = false
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# Use this class to sense if migrations have gone
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# up or down.
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class Sensor < ActiveRecord::Migration::Current
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attr_reader :went_up, :went_down
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def initialize(name = self.class.name, version = nil)
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super
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@went_up = false
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@went_down = false
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end
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def up; @went_up = true; end
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def down; @went_down = true; end
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end
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def setup
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super
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ActiveRecord::SchemaMigration.create_table
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ActiveRecord::SchemaMigration.delete_all rescue nil
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@verbose_was = ActiveRecord::Migration.verbose
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ActiveRecord::Migration.message_count = 0
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ActiveRecord::Migration.class_eval do
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undef :puts
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def puts(*)
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ActiveRecord::Migration.message_count += 1
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end
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end
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end
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teardown do
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ActiveRecord::SchemaMigration.delete_all rescue nil
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ActiveRecord::Migration.verbose = @verbose_was
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ActiveRecord::Migration.class_eval do
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undef :puts
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def puts(*)
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super
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end
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end
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end
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def test_migrator_with_duplicate_names
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assert_raises(ActiveRecord::DuplicateMigrationNameError, "Multiple migrations have the name Chunky") do
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list = [ActiveRecord::Migration.new("Chunky"), ActiveRecord::Migration.new("Chunky")]
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ActiveRecord::Migrator.new(:up, list)
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end
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end
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def test_migrator_with_duplicate_versions
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assert_raises(ActiveRecord::DuplicateMigrationVersionError) do
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list = [ActiveRecord::Migration.new("Foo", 1), ActiveRecord::Migration.new("Bar", 1)]
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ActiveRecord::Migrator.new(:up, list)
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end
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end
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def test_migrator_with_missing_version_numbers
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assert_raises(ActiveRecord::UnknownMigrationVersionError) do
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list = [ActiveRecord::Migration.new("Foo", 1), ActiveRecord::Migration.new("Bar", 2)]
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ActiveRecord::Migrator.new(:up, list, 3).run
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end
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end
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def test_finds_migrations
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migrations = ActiveRecord::Migrator.migrations(MIGRATIONS_ROOT + "/valid")
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[[1, "ValidPeopleHaveLastNames"], [2, "WeNeedReminders"], [3, "InnocentJointable"]].each_with_index do |pair, i|
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assert_equal migrations[i].version, pair.first
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assert_equal migrations[i].name, pair.last
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end
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end
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def test_finds_migrations_in_subdirectories
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migrations = ActiveRecord::Migrator.migrations(MIGRATIONS_ROOT + "/valid_with_subdirectories")
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[[1, "ValidPeopleHaveLastNames"], [2, "WeNeedReminders"], [3, "InnocentJointable"]].each_with_index do |pair, i|
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assert_equal migrations[i].version, pair.first
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assert_equal migrations[i].name, pair.last
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end
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end
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def test_finds_migrations_from_two_directories
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directories = [MIGRATIONS_ROOT + "/valid_with_timestamps", MIGRATIONS_ROOT + "/to_copy_with_timestamps"]
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migrations = ActiveRecord::Migrator.migrations directories
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[[20090101010101, "PeopleHaveHobbies"],
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[20090101010202, "PeopleHaveDescriptions"],
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[20100101010101, "ValidWithTimestampsPeopleHaveLastNames"],
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[20100201010101, "ValidWithTimestampsWeNeedReminders"],
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[20100301010101, "ValidWithTimestampsInnocentJointable"]].each_with_index do |pair, i|
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assert_equal pair.first, migrations[i].version
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assert_equal pair.last, migrations[i].name
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end
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end
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def test_finds_migrations_in_numbered_directory
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migrations = ActiveRecord::Migrator.migrations [MIGRATIONS_ROOT + "/10_urban"]
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assert_equal 9, migrations[0].version
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assert_equal "AddExpressions", migrations[0].name
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end
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def test_relative_migrations
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list = Dir.chdir(MIGRATIONS_ROOT) do
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ActiveRecord::Migrator.migrations("valid")
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end
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migration_proxy = list.find { |item|
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item.name == "ValidPeopleHaveLastNames"
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}
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assert migration_proxy, "should find pending migration"
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end
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def test_finds_pending_migrations
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ActiveRecord::SchemaMigration.create!(version: "1")
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migration_list = [ActiveRecord::Migration.new("foo", 1), ActiveRecord::Migration.new("bar", 3)]
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migrations = ActiveRecord::Migrator.new(:up, migration_list).pending_migrations
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assert_equal 1, migrations.size
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assert_equal migration_list.last, migrations.first
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end
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def test_migrator_interleaved_migrations
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pass_one = [Sensor.new("One", 1)]
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ActiveRecord::Migrator.new(:up, pass_one).migrate
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assert pass_one.first.went_up
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assert_not pass_one.first.went_down
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pass_two = [Sensor.new("One", 1), Sensor.new("Three", 3)]
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ActiveRecord::Migrator.new(:up, pass_two).migrate
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assert_not pass_two[0].went_up
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assert pass_two[1].went_up
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assert pass_two.all? { |x| !x.went_down }
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pass_three = [Sensor.new("One", 1),
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Sensor.new("Two", 2),
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Sensor.new("Three", 3)]
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ActiveRecord::Migrator.new(:down, pass_three).migrate
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assert pass_three[0].went_down
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assert_not pass_three[1].went_down
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assert pass_three[2].went_down
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end
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def test_up_calls_up
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migrations = [Sensor.new(nil, 0), Sensor.new(nil, 1), Sensor.new(nil, 2)]
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ActiveRecord::Migrator.new(:up, migrations).migrate
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assert migrations.all?(&:went_up)
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assert migrations.all? { |m| !m.went_down }
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assert_equal 2, ActiveRecord::Migrator.current_version
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end
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def test_down_calls_down
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test_up_calls_up
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migrations = [Sensor.new(nil, 0), Sensor.new(nil, 1), Sensor.new(nil, 2)]
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ActiveRecord::Migrator.new(:down, migrations).migrate
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assert migrations.all? { |m| !m.went_up }
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assert migrations.all?(&:went_down)
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assert_equal 0, ActiveRecord::Migrator.current_version
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end
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def test_current_version
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ActiveRecord::SchemaMigration.create!(version: "1000")
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assert_equal 1000, ActiveRecord::Migrator.current_version
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end
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def test_migrator_one_up
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calls, migrations = sensors(3)
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ActiveRecord::Migrator.new(:up, migrations, 1).migrate
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assert_equal [[:up, 1]], calls
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calls.clear
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ActiveRecord::Migrator.new(:up, migrations, 2).migrate
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assert_equal [[:up, 2]], calls
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end
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def test_migrator_one_down
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calls, migrations = sensors(3)
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ActiveRecord::Migrator.new(:up, migrations).migrate
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assert_equal [[:up, 1], [:up, 2], [:up, 3]], calls
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calls.clear
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ActiveRecord::Migrator.new(:down, migrations, 1).migrate
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assert_equal [[:down, 3], [:down, 2]], calls
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end
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def test_migrator_one_up_one_down
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calls, migrations = sensors(3)
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ActiveRecord::Migrator.new(:up, migrations, 1).migrate
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assert_equal [[:up, 1]], calls
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calls.clear
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ActiveRecord::Migrator.new(:down, migrations, 0).migrate
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assert_equal [[:down, 1]], calls
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end
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def test_migrator_double_up
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calls, migrations = sensors(3)
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assert_equal(0, ActiveRecord::Migrator.current_version)
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ActiveRecord::Migrator.new(:up, migrations, 1).migrate
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assert_equal [[:up, 1]], calls
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calls.clear
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ActiveRecord::Migrator.new(:up, migrations, 1).migrate
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assert_equal [], calls
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end
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def test_migrator_double_down
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calls, migrations = sensors(3)
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assert_equal(0, ActiveRecord::Migrator.current_version)
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ActiveRecord::Migrator.new(:up, migrations, 1).run
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assert_equal [[:up, 1]], calls
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calls.clear
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ActiveRecord::Migrator.new(:down, migrations, 1).run
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assert_equal [[:down, 1]], calls
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calls.clear
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ActiveRecord::Migrator.new(:down, migrations, 1).run
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assert_equal [], calls
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assert_equal(0, ActiveRecord::Migrator.current_version)
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end
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def test_migrator_verbosity
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_, migrations = sensors(3)
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ActiveRecord::Migrator.new(:up, migrations, 1).migrate
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assert_not_equal 0, ActiveRecord::Migration.message_count
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ActiveRecord::Migration.message_count = 0
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ActiveRecord::Migrator.new(:down, migrations, 0).migrate
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assert_not_equal 0, ActiveRecord::Migration.message_count
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end
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def test_migrator_verbosity_off
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_, migrations = sensors(3)
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ActiveRecord::Migration.message_count = 0
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ActiveRecord::Migration.verbose = false
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ActiveRecord::Migrator.new(:up, migrations, 1).migrate
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assert_equal 0, ActiveRecord::Migration.message_count
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ActiveRecord::Migrator.new(:down, migrations, 0).migrate
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assert_equal 0, ActiveRecord::Migration.message_count
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end
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def test_target_version_zero_should_run_only_once
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calls, migrations = sensors(3)
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# migrate up to 1
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ActiveRecord::Migrator.new(:up, migrations, 1).migrate
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assert_equal [[:up, 1]], calls
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calls.clear
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# migrate down to 0
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ActiveRecord::Migrator.new(:down, migrations, 0).migrate
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assert_equal [[:down, 1]], calls
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calls.clear
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# migrate down to 0 again
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ActiveRecord::Migrator.new(:down, migrations, 0).migrate
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assert_equal [], calls
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end
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def test_migrator_going_down_due_to_version_target
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calls, migrator = migrator_class(3)
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migrator.up("valid", 1)
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assert_equal [[:up, 1]], calls
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calls.clear
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migrator.migrate("valid", 0)
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assert_equal [[:down, 1]], calls
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calls.clear
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migrator.migrate("valid")
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assert_equal [[:up, 1], [:up, 2], [:up, 3]], calls
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end
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def test_migrator_rollback
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_, migrator = migrator_class(3)
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migrator.migrate("valid")
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assert_equal(3, ActiveRecord::Migrator.current_version)
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migrator.rollback("valid")
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assert_equal(2, ActiveRecord::Migrator.current_version)
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migrator.rollback("valid")
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assert_equal(1, ActiveRecord::Migrator.current_version)
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migrator.rollback("valid")
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assert_equal(0, ActiveRecord::Migrator.current_version)
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migrator.rollback("valid")
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assert_equal(0, ActiveRecord::Migrator.current_version)
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end
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def test_migrator_db_has_no_schema_migrations_table
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_, migrator = migrator_class(3)
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ActiveRecord::Base.connection.drop_table "schema_migrations", if_exists: true
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ActiveSupport::Deprecation.silence { assert_not ActiveRecord::Base.connection.table_exists?("schema_migrations") }
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migrator.migrate("valid", 1)
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ActiveSupport::Deprecation.silence { assert ActiveRecord::Base.connection.table_exists?("schema_migrations") }
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end
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def test_migrator_forward
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_, migrator = migrator_class(3)
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migrator.migrate("/valid", 1)
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assert_equal(1, ActiveRecord::Migrator.current_version)
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migrator.forward("/valid", 2)
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assert_equal(3, ActiveRecord::Migrator.current_version)
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migrator.forward("/valid")
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assert_equal(3, ActiveRecord::Migrator.current_version)
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end
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def test_only_loads_pending_migrations
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# migrate up to 1
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ActiveRecord::SchemaMigration.create!(version: "1")
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calls, migrator = migrator_class(3)
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migrator.migrate("valid", nil)
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assert_equal [[:up, 2], [:up, 3]], calls
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end
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def test_get_all_versions
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_, migrator = migrator_class(3)
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migrator.migrate("valid")
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assert_equal([1,2,3], ActiveRecord::Migrator.get_all_versions)
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migrator.rollback("valid")
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assert_equal([1,2], ActiveRecord::Migrator.get_all_versions)
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migrator.rollback("valid")
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assert_equal([1], ActiveRecord::Migrator.get_all_versions)
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migrator.rollback("valid")
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assert_equal([], ActiveRecord::Migrator.get_all_versions)
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end
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private
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def m(name, version)
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x = Sensor.new name, version
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x.extend(Module.new {
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define_method(:up) { yield(:up, x); super() }
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define_method(:down) { yield(:down, x); super() }
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}) if block_given?
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end
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def sensors(count)
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calls = []
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migrations = count.times.map { |i|
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m(nil, i + 1) { |c,migration|
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calls << [c, migration.version]
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}
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}
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[calls, migrations]
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end
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def migrator_class(count)
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calls, migrations = sensors(count)
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migrator = Class.new(ActiveRecord::Migrator).extend(Module.new {
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define_method(:migrations) { |paths|
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migrations
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}
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})
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[calls, migrator]
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end
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end
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