From c5bf88f03896913b991470a3722d5334a3bbcf65 Mon Sep 17 00:00:00 2001 From: Jay Pignata Date: Wed, 19 Aug 2009 11:30:00 -0400 Subject: [PATCH] Duplicating the options hash in Date#advance to prevent modification of the original --- .../active_support/core_ext/date/calculations.rb | 1 + activesupport/test/core_ext/date_ext_test.rb | 6 ++++++ 2 files changed, 7 insertions(+), 0 deletions(-) diff --git a/activesupport/lib/active_support/core_ext/date/calculations.rb b/activesupport/lib/active_support/core_ext/date/calculations.rb index 1fe4ffb..ce3bebc 100644 --- a/activesupport/lib/active_support/core_ext/date/calculations.rb +++ b/activesupport/lib/active_support/core_ext/date/calculations.rb @@ -82,6 +82,7 @@ class Date # Provides precise Date calculations for years, months, and days. The +options+ parameter takes a hash with # any of these keys: :years, :months, :weeks, :days. def advance(options) + options = options.dup d = self d = d >> options.delete(:years) * 12 if options[:years] d = d >> options.delete(:months) if options[:months] diff --git a/activesupport/test/core_ext/date_ext_test.rb b/activesupport/test/core_ext/date_ext_test.rb index 8a7bae5..18422d6 100644 --- a/activesupport/test/core_ext/date_ext_test.rb +++ b/activesupport/test/core_ext/date_ext_test.rb @@ -251,6 +251,12 @@ class DateExtCalculationsTest < Test::Unit::TestCase Time.zone_default = nil end + def test_date_advance_should_not_change_passed_options_hash + options = { :years => 3, :months => 11, :days => 2 } + Date.new(2005,2,28).advance(options) + assert_equal({ :years => 3, :months => 11, :days => 2 }, options) + end + protected def with_env_tz(new_tz = 'US/Eastern') old_tz, ENV['TZ'] = ENV['TZ'], new_tz -- 1.5.6.5