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time_zone_test.rb
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time_zone_test.rb
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require 'abstract_unit'
require 'active_support/time'
class TimeZoneTest < Test::Unit::TestCase
def test_utc_to_local
zone = ActiveSupport::TimeZone['Eastern Time (US & Canada)']
assert_equal Time.utc(1999, 12, 31, 19), zone.utc_to_local(Time.utc(2000, 1)) # standard offset -0500
assert_equal Time.utc(2000, 6, 30, 20), zone.utc_to_local(Time.utc(2000, 7)) # dst offset -0400
end
def test_local_to_utc
zone = ActiveSupport::TimeZone['Eastern Time (US & Canada)']
assert_equal Time.utc(2000, 1, 1, 5), zone.local_to_utc(Time.utc(2000, 1)) # standard offset -0500
assert_equal Time.utc(2000, 7, 1, 4), zone.local_to_utc(Time.utc(2000, 7)) # dst offset -0400
end
def test_period_for_local
zone = ActiveSupport::TimeZone['Eastern Time (US & Canada)']
assert_instance_of TZInfo::TimezonePeriod, zone.period_for_local(Time.utc(2000))
end
ActiveSupport::TimeZone::MAPPING.keys.each do |name|
define_method("test_map_#{name.downcase.gsub(/[^a-z]/, '_')}_to_tzinfo") do
zone = ActiveSupport::TimeZone[name]
assert_respond_to zone.tzinfo, :period_for_local
end
end
def test_from_integer_to_map
assert_instance_of ActiveSupport::TimeZone, ActiveSupport::TimeZone[-28800] # PST
end
def test_from_duration_to_map
assert_instance_of ActiveSupport::TimeZone, ActiveSupport::TimeZone[-480.minutes] # PST
end
ActiveSupport::TimeZone.all.each do |zone|
name = zone.name.downcase.gsub(/[^a-z]/, '_')
define_method("test_from_#{name}_to_map") do
assert_instance_of ActiveSupport::TimeZone, ActiveSupport::TimeZone[zone.name]
end
define_method("test_utc_offset_for_#{name}") do
period = zone.tzinfo.current_period
assert_equal period.utc_offset, zone.utc_offset
end
end
def test_now
with_env_tz 'US/Eastern' do
Time.stubs(:now).returns(Time.local(2000))
zone = ActiveSupport::TimeZone['Eastern Time (US & Canada)']
assert_instance_of ActiveSupport::TimeWithZone, zone.now
assert_equal Time.utc(2000,1,1,5), zone.now.utc
assert_equal Time.utc(2000), zone.now.time
assert_equal zone, zone.now.time_zone
end
end
def test_now_enforces_spring_dst_rules
with_env_tz 'US/Eastern' do
Time.stubs(:now).returns(Time.local(2006,4,2,2)) # 2AM springs forward to 3AM
zone = ActiveSupport::TimeZone['Eastern Time (US & Canada)']
assert_equal Time.utc(2006,4,2,3), zone.now.time
assert_equal true, zone.now.dst?
end
end
def test_now_enforces_fall_dst_rules
with_env_tz 'US/Eastern' do
Time.stubs(:now).returns(Time.at(1162098000)) # equivalent to 1AM DST
zone = ActiveSupport::TimeZone['Eastern Time (US & Canada)']
assert_equal Time.utc(2006,10,29,1), zone.now.time
assert_equal true, zone.now.dst?
end
end
def test_unknown_timezones_delegation_to_tzinfo
zone = ActiveSupport::TimeZone['America/Montevideo']
assert_equal ActiveSupport::TimeZone, zone.class
assert_equal zone.object_id, ActiveSupport::TimeZone['America/Montevideo'].object_id
assert_equal Time.utc(2010, 1, 31, 22), zone.utc_to_local(Time.utc(2010, 2)) # daylight saving offset -0200
assert_equal Time.utc(2010, 3, 31, 21), zone.utc_to_local(Time.utc(2010, 4)) # standard offset -0300
end
def test_today
Time.stubs(:now).returns(Time.utc(2000, 1, 1, 4, 59, 59)) # 1 sec before midnight Jan 1 EST
assert_equal Date.new(1999, 12, 31), ActiveSupport::TimeZone['Eastern Time (US & Canada)'].today
Time.stubs(:now).returns(Time.utc(2000, 1, 1, 5)) # midnight Jan 1 EST
assert_equal Date.new(2000, 1, 1), ActiveSupport::TimeZone['Eastern Time (US & Canada)'].today
Time.stubs(:now).returns(Time.utc(2000, 1, 2, 4, 59, 59)) # 1 sec before midnight Jan 2 EST
assert_equal Date.new(2000, 1, 1), ActiveSupport::TimeZone['Eastern Time (US & Canada)'].today
Time.stubs(:now).returns(Time.utc(2000, 1, 2, 5)) # midnight Jan 2 EST
assert_equal Date.new(2000, 1, 2), ActiveSupport::TimeZone['Eastern Time (US & Canada)'].today
end
def test_local
time = ActiveSupport::TimeZone["Hawaii"].local(2007, 2, 5, 15, 30, 45)
assert_equal Time.utc(2007, 2, 5, 15, 30, 45), time.time
assert_equal ActiveSupport::TimeZone["Hawaii"], time.time_zone
end
def test_local_with_old_date
time = ActiveSupport::TimeZone["Hawaii"].local(1850, 2, 5, 15, 30, 45)
assert_equal [45,30,15,5,2,1850], time.to_a[0,6]
assert_equal ActiveSupport::TimeZone["Hawaii"], time.time_zone
end
def test_local_enforces_spring_dst_rules
zone = ActiveSupport::TimeZone['Eastern Time (US & Canada)']
twz = zone.local(2006,4,2,1,59,59) # 1 second before DST start
assert_equal Time.utc(2006,4,2,1,59,59), twz.time
assert_equal Time.utc(2006,4,2,6,59,59), twz.utc
assert_equal false, twz.dst?
assert_equal 'EST', twz.zone
twz2 = zone.local(2006,4,2,2) # 2AM does not exist because at 2AM, time springs forward to 3AM
assert_equal Time.utc(2006,4,2,3), twz2.time # twz is created for 3AM
assert_equal Time.utc(2006,4,2,7), twz2.utc
assert_equal true, twz2.dst?
assert_equal 'EDT', twz2.zone
twz3 = zone.local(2006,4,2,2,30) # 2:30AM does not exist because at 2AM, time springs forward to 3AM
assert_equal Time.utc(2006,4,2,3,30), twz3.time # twz is created for 3:30AM
assert_equal Time.utc(2006,4,2,7,30), twz3.utc
assert_equal true, twz3.dst?
assert_equal 'EDT', twz3.zone
end
def test_local_enforces_fall_dst_rules
# 1AM during fall DST transition is ambiguous, it could be either DST or non-DST 1AM
# Mirroring Time.local behavior, this method selects the DST time
zone = ActiveSupport::TimeZone['Eastern Time (US & Canada)']
twz = zone.local(2006,10,29,1)
assert_equal Time.utc(2006,10,29,1), twz.time
assert_equal Time.utc(2006,10,29,5), twz.utc
assert_equal true, twz.dst?
assert_equal 'EDT', twz.zone
end
def test_at
zone = ActiveSupport::TimeZone['Eastern Time (US & Canada)']
secs = 946684800.0
twz = zone.at(secs)
assert_equal Time.utc(1999,12,31,19), twz.time
assert_equal Time.utc(2000), twz.utc
assert_equal zone, twz.time_zone
assert_equal secs, twz.to_f
end
def test_at_with_old_date
zone = ActiveSupport::TimeZone['Eastern Time (US & Canada)']
secs = DateTime.civil(1850).to_f
twz = zone.at(secs)
assert_equal [1850, 1, 1, 0], [twz.utc.year, twz.utc.mon, twz.utc.day, twz.utc.hour]
assert_equal zone, twz.time_zone
assert_equal secs, twz.to_f
end
def test_parse
zone = ActiveSupport::TimeZone['Eastern Time (US & Canada)']
twz = zone.parse('1999-12-31 19:00:00')
assert_equal Time.utc(1999,12,31,19), twz.time
assert_equal Time.utc(2000), twz.utc
assert_equal zone, twz.time_zone
end
def test_parse_string_with_timezone
(-11..13).each do |timezone_offset|
zone = ActiveSupport::TimeZone[timezone_offset]
twz = zone.parse('1999-12-31 19:00:00')
assert_equal twz, zone.parse(twz.to_s)
end
end
def test_parse_with_old_date
zone = ActiveSupport::TimeZone['Eastern Time (US & Canada)']
twz = zone.parse('1850-12-31 19:00:00')
assert_equal [0,0,19,31,12,1850], twz.to_a[0,6]
assert_equal zone, twz.time_zone
end
def test_parse_far_future_date_with_time_zone_offset_in_string
zone = ActiveSupport::TimeZone['Eastern Time (US & Canada)']
twz = zone.parse('2050-12-31 19:00:00 -10:00') # i.e., 2050-01-01 05:00:00 UTC
assert_equal [0,0,0,1,1,2051], twz.to_a[0,6]
assert_equal zone, twz.time_zone
end
def test_parse_returns_nil_when_string_without_date_information_is_passed_in
zone = ActiveSupport::TimeZone['Eastern Time (US & Canada)']
assert_nil zone.parse('foobar')
assert_nil zone.parse(' ')
end
def test_parse_with_incomplete_date
zone = ActiveSupport::TimeZone['Eastern Time (US & Canada)']
zone.stubs(:now).returns zone.local(1999,12,31)
twz = zone.parse('19:00:00')
assert_equal Time.utc(1999,12,31,19), twz.time
end
def test_utc_offset_lazy_loaded_from_tzinfo_when_not_passed_in_to_initialize
tzinfo = TZInfo::Timezone.get('America/New_York')
zone = ActiveSupport::TimeZone.create(tzinfo.name, nil, tzinfo)
assert_equal nil, zone.instance_variable_get('@utc_offset')
assert_equal(-18_000, zone.utc_offset)
end
def test_seconds_to_utc_offset_with_colon
assert_equal "-06:00", ActiveSupport::TimeZone.seconds_to_utc_offset(-21_600)
assert_equal "+00:00", ActiveSupport::TimeZone.seconds_to_utc_offset(0)
assert_equal "+05:00", ActiveSupport::TimeZone.seconds_to_utc_offset(18_000)
end
def test_seconds_to_utc_offset_without_colon
assert_equal "-0600", ActiveSupport::TimeZone.seconds_to_utc_offset(-21_600, false)
assert_equal "+0000", ActiveSupport::TimeZone.seconds_to_utc_offset(0, false)
assert_equal "+0500", ActiveSupport::TimeZone.seconds_to_utc_offset(18_000, false)
end
def test_seconds_to_utc_offset_with_negative_offset
assert_equal "-01:00", ActiveSupport::TimeZone.seconds_to_utc_offset(-3_600)
assert_equal "-00:59", ActiveSupport::TimeZone.seconds_to_utc_offset(-3_599)
assert_equal "-05:30", ActiveSupport::TimeZone.seconds_to_utc_offset(-19_800)
end
def test_formatted_offset_positive
zone = ActiveSupport::TimeZone['Moscow']
assert_equal "+03:00", zone.formatted_offset
assert_equal "+0300", zone.formatted_offset(false)
end
def test_formatted_offset_negative
zone = ActiveSupport::TimeZone['Eastern Time (US & Canada)']
assert_equal "-05:00", zone.formatted_offset
assert_equal "-0500", zone.formatted_offset(false)
end
def test_formatted_offset_zero
zone = ActiveSupport::TimeZone['London']
assert_equal "+00:00", zone.formatted_offset
assert_equal "UTC", zone.formatted_offset(true, 'UTC')
end
def test_zone_compare
zone1 = ActiveSupport::TimeZone['Central Time (US & Canada)'] # offset -0600
zone2 = ActiveSupport::TimeZone['Eastern Time (US & Canada)'] # offset -0500
assert zone1 < zone2
assert zone2 > zone1
assert zone1 == zone1
end
def test_zone_match
zone = ActiveSupport::TimeZone['Eastern Time (US & Canada)']
assert zone =~ /Eastern/
assert zone =~ /New_York/
assert zone !~ /Nonexistent_Place/
end
def test_to_s
assert_equal "(GMT+03:00) Moscow", ActiveSupport::TimeZone['Moscow'].to_s
end
def test_all_sorted
all = ActiveSupport::TimeZone.all
1.upto( all.length-1 ) do |i|
assert all[i-1] < all[i]
end
end
def test_index
assert_nil ActiveSupport::TimeZone["bogus"]
assert_instance_of ActiveSupport::TimeZone, ActiveSupport::TimeZone["Central Time (US & Canada)"]
assert_instance_of ActiveSupport::TimeZone, ActiveSupport::TimeZone[8]
assert_raise(ArgumentError) { ActiveSupport::TimeZone[false] }
end
def test_unknown_zone_should_have_tzinfo_but_exception_on_utc_offset
zone = ActiveSupport::TimeZone.create("bogus")
assert_instance_of TZInfo::TimezoneProxy, zone.tzinfo
assert_raise(TZInfo::InvalidTimezoneIdentifier) { zone.utc_offset }
end
def test_unknown_zone_with_utc_offset
zone = ActiveSupport::TimeZone.create("bogus", -21_600)
assert_equal(-21_600, zone.utc_offset)
end
def test_unknown_zones_dont_store_mapping_keys
ActiveSupport::TimeZone["bogus"]
assert !ActiveSupport::TimeZone.zones_map.key?("bogus")
end
def test_new
assert_equal ActiveSupport::TimeZone["Central Time (US & Canada)"], ActiveSupport::TimeZone.new("Central Time (US & Canada)")
end
def test_us_zones
assert ActiveSupport::TimeZone.us_zones.include?(ActiveSupport::TimeZone["Hawaii"])
assert !ActiveSupport::TimeZone.us_zones.include?(ActiveSupport::TimeZone["Kuala Lumpur"])
end
protected
def with_env_tz(new_tz = 'US/Eastern')
old_tz, ENV['TZ'] = ENV['TZ'], new_tz
yield
ensure
old_tz ? ENV['TZ'] = old_tz : ENV.delete('TZ')
end
end