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require 'cases/helper'
if ActiveRecord::Base.connection.supports_datetime_with_precision?
class TimePrecisionTest < ActiveRecord::TestCase
setup do
@connection = ActiveRecord::Base.connection
end
teardown do
@connection.drop_table :foos, if_exists: true
end
def test_time_data_type_with_precision
@connection.create_table(:foos, force: true)
@connection.add_column :foos, :start, :time, precision: 3
@connection.add_column :foos, :finish, :time, precision: 6
assert_equal 3, activerecord_column_option('foos', 'start', 'precision')
assert_equal 6, activerecord_column_option('foos', 'finish', 'precision')
end
def test_passing_precision_to_time_does_not_set_limit
@connection.create_table(:foos, force: true) do |t|
t.time :start, precision: 3
t.time :finish, precision: 6
end
assert_nil activerecord_column_option('foos', 'start', 'limit')
assert_nil activerecord_column_option('foos', 'finish', 'limit')
end
def test_invalid_time_precision_raises_error
assert_raises ActiveRecord::ActiveRecordError do
@connection.create_table(:foos, force: true) do |t|
t.time :start, precision: 7
t.time :finish, precision: 7
end
end
end
def test_database_agrees_with_activerecord_about_precision
@connection.create_table(:foos, force: true) do |t|
t.time :start, precision: 2
t.time :finish, precision: 4
end
assert_equal 2, database_datetime_precision('foos', 'start')
assert_equal 4, database_datetime_precision('foos', 'finish')
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
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