require 'cases/helper' require 'models/developer' require 'models/topic' class TimestampTest < ActiveRecord::TestCase fixtures :topics def test_group_by_date keys = Topic.group("date_trunc('month', created_at)").count.keys assert_operator keys.length, :>, 0 keys.each { |k| assert_kind_of Time, k } end def test_load_infinity_and_beyond unless current_adapter?(:PostgreSQLAdapter) return skip("only tested on postgresql") end d = Developer.find_by_sql("select 'infinity'::timestamp as updated_at") assert d.first.updated_at.infinite?, 'timestamp should be infinite' d = Developer.find_by_sql("select '-infinity'::timestamp as updated_at") time = d.first.updated_at assert time.infinite?, 'timestamp should be infinite' assert_operator time, :<, 0 end def test_save_infinity_and_beyond unless current_adapter?(:PostgreSQLAdapter) return skip("only tested on postgresql") end d = Developer.create!(:name => 'aaron', :updated_at => 1.0 / 0.0) assert_equal(1.0 / 0.0, d.updated_at) d = Developer.create!(:name => 'aaron', :updated_at => -1.0 / 0.0) assert_equal(-1.0 / 0.0, d.updated_at) end def test_default_datetime_precision ActiveRecord::Base.connection.create_table(:foos) 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_timestamp_data_type_with_precision ActiveRecord::Base.connection.create_table(:foos) ActiveRecord::Base.connection.add_column :foos, :created_at, :datetime, :precision => 0 ActiveRecord::Base.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 ActiveRecord::Base.connection.create_table(:foos) 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_timestamp_does_not_set_limit ActiveRecord::Base.connection.create_table(:foos) 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_timestamp_precision_raises_error assert_raises ActiveRecord::ActiveRecordError do ActiveRecord::Base.connection.create_table(:foos) do |t| t.timestamps :precision => 7 end end end def test_postgres_agrees_with_activerecord_about_precision ActiveRecord::Base.connection.create_table(:foos) do |t| t.timestamps :precision => 4 end assert_equal '4', pg_datetime_precision('foos', 'created_at') assert_equal '4', pg_datetime_precision('foos', 'updated_at') end def test_bc_timestamp unless current_adapter?(:PostgreSQLAdapter) return skip("only tested on postgresql") end date = Date.new(0) - 1.second Developer.create!(:name => "aaron", :updated_at => date) assert_equal date, Developer.find_by_name("aaron").updated_at end private def pg_datetime_precision(table_name, column_name) results = ActiveRecord::Base.connection.execute("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