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Change Time#sec_fraction to use subsec

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Time instances can have fractional parts smaller than a nanosecond.
This commit is contained in:
Andrew White 2016-04-23 19:11:34 +01:00
parent dbc7a7cb50
commit 88d844b278
2 changed files with 16 additions and 2 deletions
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4
activesupport/lib/active_support/core_ext/time/calculations.rb
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@ -75,9 +75,9 @@ def seconds_until_end_of_day
# Returns the fraction of a second as a +Rational+
#
# Time.new(2012, 8, 29, 0, 0, 0.5).sec_fraction # => (1/2)
# Time.new(2012, 8, 29, 0, 0, 0.5).sec_fraction # => (1/2)
def sec_fraction
Rational(nsec, 1000000000)
subsec
end
# Returns a new Time where one or more of the elements have been changed according

14
activesupport/test/core_ext/time_ext_test.rb
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@ -107,6 +107,20 @@ def test_seconds_until_end_of_day_at_daylight_savings_time_end
end
end
def test_sec_fraction
time = Time.utc(2016, 4, 23, 0, 0, Rational(1,10000000000))
assert_equal Rational(1,10000000000), time.sec_fraction
time = Time.utc(2016, 4, 23, 0, 0, 0.0000000001)
assert_equal 0.0000000001.to_r, time.sec_fraction
time = Time.utc(2016, 4, 23, 0, 0, 0, Rational(1,10000))
assert_equal Rational(1,10000000000), time.sec_fraction
time = Time.utc(2016, 4, 23, 0, 0, 0, 0.0001)
assert_equal 0.0001.to_r / 1000000, time.sec_fraction
end
def test_beginning_of_day
assert_equal Time.local(2005,2,4,0,0,0), Time.local(2005,2,4,10,10,10).beginning_of_day
with_env_tz 'US/Eastern' do