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require 'cases/helper'
if mysql_56?
class DateTimeTest < ActiveRecord::TestCase
self.use_transactional_fixtures = false
class Foo < ActiveRecord::Base; end
def test_default_datetime_precision
ActiveRecord::Base.connection.create_table(:foos, force: true)
ActiveRecord::Base.connection.add_column :foos, :created_at, :datetime
ActiveRecord::Base.connection.add_column :foos, :updated_at, :datetime
assert_nil activerecord_column_option('foos', 'created_at', 'precision')
end
def test_datetime_data_type_with_precision
ActiveRecord::Base.connection.create_table(:foos, force: true)
ActiveRecord::Base.connection.add_column :foos, :created_at, :datetime, precision: 1
ActiveRecord::Base.connection.add_column :foos, :updated_at, :datetime, precision: 5
assert_equal 1, 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
ActiveRecord::Base.connection.create_table(:foos, force: true) do |t|
t.timestamps null: true, 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
ActiveRecord::Base.connection.create_table(:foos, force: true) do |t|
t.timestamps null: true, 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
ActiveRecord::Base.connection.create_table(:foos, force: true) do |t|
t.timestamps null: true, precision: 7
end
end
end
def test_mysql_agrees_with_activerecord_about_precision
ActiveRecord::Base.connection.create_table(:foos, force: true) do |t|
t.timestamps null: true, precision: 4
end
assert_equal 4, mysql_datetime_precision('foos', 'created_at')
assert_equal 4, mysql_datetime_precision('foos', 'updated_at')
end
def test_formatting_datetime_according_to_precision
ActiveRecord::Base.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 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
private
def mysql_datetime_precision(table_name, column_name)
results = ActiveRecord::Base.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"]
end
def activerecord_column_option(tablename, column_name, option)
result = ActiveRecord::Base.connection.columns(tablename).find do |column|
column.name == column_name
end
result && result.send(option)
end
end
end
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