require 'cases/helper' require 'support/schema_dumping_helper' if mysql_56? || current_adapter?(:PostgreSQLAdapter) class DateTimePrecisionTest < ActiveRecord::TestCase include SchemaDumpingHelper self.use_transactional_fixtures = false class Foo < ActiveRecord::Base; end setup do @connection = ActiveRecord::Base.connection end teardown do @connection.drop_table :foos, if_exists: true end def test_datetime_data_type_with_precision @connection.create_table(:foos, force: true) @connection.add_column :foos, :created_at, :datetime, precision: 0 @connection.add_column :foos, :updated_at, :datetime, precision: 5 assert_equal 0, activerecord_column_option('foos', 'created_at', 'precision') assert_equal 5, activerecord_column_option('foos', 'updated_at', 'precision') end def test_timestamps_helper_with_custom_precision @connection.create_table(:foos, force: true) do |t| t.timestamps precision: 4 end assert_equal 4, activerecord_column_option('foos', 'created_at', 'precision') assert_equal 4, activerecord_column_option('foos', 'updated_at', 'precision') end def test_passing_precision_to_datetime_does_not_set_limit @connection.create_table(:foos, force: true) do |t| t.timestamps precision: 4 end assert_nil activerecord_column_option('foos', 'created_at', 'limit') assert_nil activerecord_column_option('foos', 'updated_at', 'limit') end def test_invalid_datetime_precision_raises_error assert_raises ActiveRecord::ActiveRecordError do @connection.create_table(:foos, force: true) do |t| t.timestamps precision: 7 end end end def test_database_agrees_with_activerecord_about_precision @connection.create_table(:foos, force: true) do |t| t.timestamps precision: 4 end assert_equal 4, database_datetime_precision('foos', 'created_at') assert_equal 4, database_datetime_precision('foos', 'updated_at') end def test_formatting_datetime_according_to_precision @connection.create_table(:foos, force: true) do |t| t.datetime :created_at, precision: 0 t.datetime :updated_at, precision: 4 end date = ::Time.utc(2014, 8, 17, 12, 30, 0, 999999) Foo.create!(created_at: date, updated_at: date) assert foo = Foo.find_by(created_at: date) assert_equal 1, Foo.where(updated_at: date).count assert_equal date.to_s, foo.created_at.to_s assert_equal date.to_s, foo.updated_at.to_s assert_equal 000000, foo.created_at.usec assert_equal 999900, foo.updated_at.usec end if current_adapter?(:PostgreSQLAdapter) def test_datetime_precision_with_zero_should_be_dumped @connection.create_table(:foos) do |t| t.timestamps precision: 0 end output = dump_table_schema("foos") assert_match %r{t\.datetime\s+"created_at",\s+precision: 0,\s+null: false$}, output assert_match %r{t\.datetime\s+"updated_at",\s+precision: 0,\s+null: false$}, output end end private def database_datetime_precision(table_name, column_name) results = @connection.exec_query("SELECT column_name, datetime_precision FROM information_schema.columns WHERE table_name = '#{table_name}'") result = results.find do |result_hash| result_hash["column_name"] == column_name end result && result["datetime_precision"].to_i end def activerecord_column_option(tablename, column_name, option) result = @connection.columns(tablename).find do |column| column.name == column_name end result && result.send(option) end end end