diff options
Diffstat (limited to 'activerecord/test/cases/date_time_precision_test.rb')
| -rw-r--r-- | activerecord/test/cases/date_time_precision_test.rb | 111 |
1 files changed, 111 insertions, 0 deletions
diff --git a/activerecord/test/cases/date_time_precision_test.rb b/activerecord/test/cases/date_time_precision_test.rb new file mode 100644 index 0000000000..698f1b852e --- /dev/null +++ b/activerecord/test/cases/date_time_precision_test.rb @@ -0,0 +1,111 @@ +require 'cases/helper' +require 'support/schema_dumping_helper' + +if ActiveRecord::Base.connection.supports_datetime_with_precision? +class DateTimePrecisionTest < ActiveRecord::TestCase + include SchemaDumpingHelper + self.use_transactional_tests = 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 + + def test_schema_dump_includes_datetime_precision + @connection.create_table(:foos, force: true) do |t| + t.timestamps precision: 6 + end + output = dump_table_schema("foos") + assert_match %r{t\.datetime\s+"created_at",\s+precision: 6,\s+null: false$}, output + assert_match %r{t\.datetime\s+"updated_at",\s+precision: 6,\s+null: false$}, output + end + + if current_adapter?(:PostgreSQLAdapter) + def test_datetime_precision_with_zero_should_be_dumped + @connection.create_table(:foos, force: true) 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 |