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require 'cases/helper'
require 'models/developer'
class TimestampTest < ActiveRecord::TestCase
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
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