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rails--rails/activerecord/test/cases/migrator_test.rb
Ryuta Kamizono 18a1c750cc Remove meaningless ActiveRecord::MigrationContext.new(old_path) in ensure block
`ActiveRecord::MigrationContext.new` just create an instance, doesn't
have any side-effect.
2018-09-17 19:53:02 +09:00

508 lines
15 KiB
Ruby

# frozen_string_literal: true
require "cases/helper"
require "cases/migration/helper"
class MigratorTest < 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
ActiveRecord::SchemaMigration.create_table
ActiveRecord::SchemaMigration.delete_all rescue nil
@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
ActiveRecord::SchemaMigration.delete_all rescue nil
ActiveRecord::Migration.verbose = @verbose_was
ActiveRecord::Migration.class_eval do
undef :puts
def puts(*)
super
end
end
end
def test_migrator_with_duplicate_names
e = assert_raises(ActiveRecord::DuplicateMigrationNameError) do
list = [ActiveRecord::Migration.new("Chunky"), ActiveRecord::Migration.new("Chunky")]
ActiveRecord::Migrator.new(:up, list)
end
assert_match(/Multiple migrations have the name Chunky/, e.message)
end
def test_migrator_with_duplicate_versions
assert_raises(ActiveRecord::DuplicateMigrationVersionError) do
list = [ActiveRecord::Migration.new("Foo", 1), ActiveRecord::Migration.new("Bar", 1)]
ActiveRecord::Migrator.new(:up, list)
end
end
def test_migrator_with_missing_version_numbers
assert_raises(ActiveRecord::UnknownMigrationVersionError) do
list = [ActiveRecord::Migration.new("Foo", 1), ActiveRecord::Migration.new("Bar", 2)]
ActiveRecord::Migrator.new(:up, list, 3).run
end
assert_raises(ActiveRecord::UnknownMigrationVersionError) do
list = [ActiveRecord::Migration.new("Foo", 1), ActiveRecord::Migration.new("Bar", 2)]
ActiveRecord::Migrator.new(:up, list, -1).run
end
assert_raises(ActiveRecord::UnknownMigrationVersionError) do
list = [ActiveRecord::Migration.new("Foo", 1), ActiveRecord::Migration.new("Bar", 2)]
ActiveRecord::Migrator.new(:up, list, 0).run
end
assert_raises(ActiveRecord::UnknownMigrationVersionError) do
list = [ActiveRecord::Migration.new("Foo", 1), ActiveRecord::Migration.new("Bar", 2)]
ActiveRecord::Migrator.new(:up, list, 3).migrate
end
assert_raises(ActiveRecord::UnknownMigrationVersionError) do
list = [ActiveRecord::Migration.new("Foo", 1), ActiveRecord::Migration.new("Bar", 2)]
ActiveRecord::Migrator.new(:up, list, -1).migrate
end
end
def test_finds_migrations
migrations = ActiveRecord::MigrationContext.new(MIGRATIONS_ROOT + "/valid").migrations
[[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::MigrationContext.new(MIGRATIONS_ROOT + "/valid_with_subdirectories").migrations
[[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::MigrationContext.new(directories).migrations
[[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_finds_migrations_in_numbered_directory
migrations = ActiveRecord::MigrationContext.new(MIGRATIONS_ROOT + "/10_urban").migrations
assert_equal 9, migrations[0].version
assert_equal "AddExpressions", migrations[0].name
end
def test_relative_migrations
list = Dir.chdir(MIGRATIONS_ROOT) do
ActiveRecord::MigrationContext.new("valid").migrations
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 = [ActiveRecord::Migration.new("foo", 1), ActiveRecord::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_migrations_status
path = MIGRATIONS_ROOT + "/valid"
ActiveRecord::SchemaMigration.create(version: 2)
ActiveRecord::SchemaMigration.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).migrations_status
end
def test_migrations_status_in_subdirectories
path = MIGRATIONS_ROOT + "/valid_with_subdirectories"
ActiveRecord::SchemaMigration.create(version: 2)
ActiveRecord::SchemaMigration.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).migrations_status
end
def test_migrations_status_with_schema_define_in_subdirectories
path = MIGRATIONS_ROOT + "/valid_with_subdirectories"
prev_paths = ActiveRecord::Migrator.migrations_paths
ActiveRecord::Migrator.migrations_paths = path
ActiveRecord::Schema.define(version: 3) do
end
assert_equal [
["up", "001", "Valid people have last names"],
["up", "002", "We need reminders"],
["up", "003", "Innocent jointable"],
], ActiveRecord::MigrationContext.new(path).migrations_status
ensure
ActiveRecord::Migrator.migrations_paths = prev_paths
end
def test_migrations_status_from_two_directories
paths = [MIGRATIONS_ROOT + "/valid_with_timestamps", MIGRATIONS_ROOT + "/to_copy_with_timestamps"]
ActiveRecord::SchemaMigration.create(version: "20100101010101")
ActiveRecord::SchemaMigration.create(version: "20160528010101")
assert_equal [
["down", "20090101010101", "People have hobbies"],
["down", "20090101010202", "People have descriptions"],
["up", "20100101010101", "Valid with timestamps people have last names"],
["down", "20100201010101", "Valid with timestamps we need reminders"],
["down", "20100301010101", "Valid with timestamps innocent jointable"],
["up", "20160528010101", "********** NO FILE **********"],
], ActiveRecord::MigrationContext.new(paths).migrations_status
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
assert_not pass_one.first.went_down
pass_two = [Sensor.new("One", 1), Sensor.new("Three", 3)]
ActiveRecord::Migrator.new(:up, pass_two).migrate
assert_not 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
assert_not 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)]
migrator = ActiveRecord::Migrator.new(:up, migrations)
migrator.migrate
assert migrations.all?(&:went_up)
assert migrations.all? { |m| !m.went_down }
assert_equal 2, 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)]
migrator = ActiveRecord::Migrator.new(:down, migrations)
migrator.migrate
assert migrations.all? { |m| !m.went_up }
assert migrations.all?(&:went_down)
assert_equal 0, migrator.current_version
end
def test_current_version
ActiveRecord::SchemaMigration.create!(version: "1000")
migrator = ActiveRecord::MigrationContext.new("db/migrate")
assert_equal 1000, 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)
migrator = ActiveRecord::Migrator.new(:up, migrations, 1)
assert_equal(0, migrator.current_version)
migrator.migrate
assert_equal [[:up, 1]], calls
calls.clear
migrator.migrate
assert_equal [], calls
end
def test_migrator_double_down
calls, migrations = sensors(3)
migrator = ActiveRecord::Migrator.new(:up, migrations, 1)
assert_equal 0, migrator.current_version
migrator.run
assert_equal [[:up, 1]], calls
calls.clear
migrator = ActiveRecord::Migrator.new(:down, migrations, 1)
migrator.run
assert_equal [[:down, 1]], calls
calls.clear
migrator.run
assert_equal [], calls
assert_equal 0, migrator.current_version
end
def test_migrator_verbosity
_, migrations = sensors(3)
ActiveRecord::Migration.verbose = true
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
end
def test_migrator_verbosity_off
_, migrations = sensors(3)
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 = migrator.new("valid")
migrator.up(1)
assert_equal [[:up, 1]], calls
calls.clear
migrator.migrate(0)
assert_equal [[:down, 1]], calls
calls.clear
migrator.migrate
assert_equal [[:up, 1], [:up, 2], [:up, 3]], calls
end
def test_migrator_output_when_running_multiple_migrations
_, migrator = migrator_class(3)
migrator = migrator.new("valid")
result = migrator.migrate
assert_equal(3, result.count)
# Nothing migrated from duplicate run
result = migrator.migrate
assert_equal(0, result.count)
result = migrator.rollback
assert_equal(1, result.count)
end
def test_migrator_output_when_running_single_migration
_, migrator = migrator_class(1)
migrator = migrator.new("valid")
result = migrator.run(:up, 1)
assert_equal(1, result.version)
end
def test_migrator_rollback
_, migrator = migrator_class(3)
migrator = migrator.new("valid")
migrator.migrate
assert_equal(3, migrator.current_version)
migrator.rollback
assert_equal(2, migrator.current_version)
migrator.rollback
assert_equal(1, migrator.current_version)
migrator.rollback
assert_equal(0, migrator.current_version)
migrator.rollback
assert_equal(0, migrator.current_version)
end
def test_migrator_db_has_no_schema_migrations_table
_, migrator = migrator_class(3)
migrator = migrator.new("valid")
ActiveRecord::Base.connection.drop_table "schema_migrations", if_exists: true
assert_not ActiveRecord::Base.connection.table_exists?("schema_migrations")
migrator.migrate(1)
assert ActiveRecord::Base.connection.table_exists?("schema_migrations")
end
def test_migrator_forward
_, migrator = migrator_class(3)
migrator = migrator.new("/valid")
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)
end
def test_only_loads_pending_migrations
# migrate up to 1
ActiveRecord::SchemaMigration.create!(version: "1")
calls, migrator = migrator_class(3)
migrator = migrator.new("valid")
migrator.migrate
assert_equal [[:up, 2], [:up, 3]], calls
end
def test_get_all_versions
_, migrator = migrator_class(3)
migrator = migrator.new("valid")
migrator.migrate
assert_equal([1, 2, 3], migrator.get_all_versions)
migrator.rollback
assert_equal([1, 2], migrator.get_all_versions)
migrator.rollback
assert_equal([1], migrator.get_all_versions)
migrator.rollback
assert_equal([], migrator.get_all_versions)
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