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-rw-r--r--activesupport/CHANGELOG.md9
-rw-r--r--activesupport/lib/active_support/core_ext/date_time/calculations.rb2
-rw-r--r--activesupport/test/core_ext/date_time_ext_test.rb4
3 files changed, 12 insertions, 3 deletions
diff --git a/activesupport/CHANGELOG.md b/activesupport/CHANGELOG.md
index 2e465a0310..2f5ed35f46 100644
--- a/activesupport/CHANGELOG.md
+++ b/activesupport/CHANGELOG.md
@@ -1,3 +1,12 @@
+* Fix duration being rounded to a full second.
+ ```
+ time = DateTime.parse("2018-1-1")
+ time += 0.51.seconds
+ ```
+ Will now correctly add 0.51 second and not 1 full second.
+
+ *Edouard Chin*
+
* Deprecate `ActiveSupport::Multibyte::Unicode#normalize` and `ActiveSuppport::Multibyte::Chars#normalize`
in favor of `String#unicode_normalize`
diff --git a/activesupport/lib/active_support/core_ext/date_time/calculations.rb b/activesupport/lib/active_support/core_ext/date_time/calculations.rb
index e61b23f842..bc670c3e76 100644
--- a/activesupport/lib/active_support/core_ext/date_time/calculations.rb
+++ b/activesupport/lib/active_support/core_ext/date_time/calculations.rb
@@ -110,7 +110,7 @@ class DateTime
# instance time. Do not use this method in combination with x.months, use
# months_since instead!
def since(seconds)
- self + Rational(seconds.round, 86400)
+ self + Rational(seconds, 86400)
end
alias :in :since
diff --git a/activesupport/test/core_ext/date_time_ext_test.rb b/activesupport/test/core_ext/date_time_ext_test.rb
index 894fb80cba..f9f6b21c9b 100644
--- a/activesupport/test/core_ext/date_time_ext_test.rb
+++ b/activesupport/test/core_ext/date_time_ext_test.rb
@@ -152,8 +152,8 @@ class DateTimeExtCalculationsTest < ActiveSupport::TestCase
assert_equal DateTime.civil(2005, 2, 22, 11, 10, 10), DateTime.civil(2005, 2, 22, 10, 10, 10).since(3600)
assert_equal DateTime.civil(2005, 2, 24, 10, 10, 10), DateTime.civil(2005, 2, 22, 10, 10, 10).since(86400 * 2)
assert_equal DateTime.civil(2005, 2, 24, 11, 10, 35), DateTime.civil(2005, 2, 22, 10, 10, 10).since(86400 * 2 + 3600 + 25)
- assert_equal DateTime.civil(2005, 2, 22, 10, 10, 11), DateTime.civil(2005, 2, 22, 10, 10, 10).since(1.333)
- assert_equal DateTime.civil(2005, 2, 22, 10, 10, 12), DateTime.civil(2005, 2, 22, 10, 10, 10).since(1.667)
+ assert_not_equal DateTime.civil(2005, 2, 22, 10, 10, 11), DateTime.civil(2005, 2, 22, 10, 10, 10).since(1.333)
+ assert_not_equal DateTime.civil(2005, 2, 22, 10, 10, 12), DateTime.civil(2005, 2, 22, 10, 10, 10).since(1.667)
end
def test_change