# frozen_string_literal: true

require_relative "../abstract_unit"
require "active_support/time"
require_relative "../time_zone_test_helpers"

class DateAndTimeCompatibilityTest < ActiveSupport::TestCase
  include TimeZoneTestHelpers

  def setup
    @utc_time = Time.utc(2016, 4, 23, 14, 11, 12)
    @date_time = DateTime.new(2016, 4, 23, 14, 11, 12, 0)
    @utc_offset = 3600
    @system_offset = -14400
    @system_dst_offset = -18000
    @zone = ActiveSupport::TimeZone["London"]
  end

  def test_time_to_time_preserves_timezone
    with_env_tz "US/Eastern" do
      source = Time.new(2016, 4, 23, 15, 11, 12, 3600)
      time = source.to_time

      assert_instance_of Time, time
      assert_equal @utc_time, time.getutc
      assert_equal @utc_offset, time.utc_offset
      assert_equal source.object_id, time.object_id
    end
  end

  def test_time_to_time_frozen_preserves_timezone
    with_env_tz "US/Eastern" do
      source = Time.new(2016, 4, 23, 15, 11, 12, 3600).freeze
      time = source.to_time

      assert_instance_of Time, time
      assert_equal @utc_time, time.getutc
      assert_equal @utc_offset, time.utc_offset
      assert_equal source.object_id, time.object_id
      assert_predicate time, :frozen?
    end
  end

  def test_datetime_to_time_preserves_timezone
    with_env_tz "US/Eastern" do
      source = DateTime.new(2016, 4, 23, 15, 11, 12, Rational(1, 24))
      time = source.to_time

      assert_instance_of Time, time
      assert_equal @utc_time, time.getutc
      assert_equal @utc_offset, time.utc_offset
    end
  end

  def test_datetime_to_time_frozen_preserves_timezone
    with_env_tz "US/Eastern" do
      source = DateTime.new(2016, 4, 23, 15, 11, 12, Rational(1, 24)).freeze
      time = source.to_time

      assert_instance_of Time, time
      assert_equal @utc_time, time.getutc
      assert_equal @utc_offset, time.utc_offset
      assert_not_predicate time, :frozen?
    end
  end

  def test_twz_to_time_preserves_timezone
    with_env_tz "US/Eastern" do
      source = ActiveSupport::TimeWithZone.new(@utc_time, @zone)
      time = source.to_time

      assert_instance_of Time, time
      assert_equal @utc_time, time.getutc
      assert_instance_of Time, time.getutc
      assert_equal @utc_offset, time.utc_offset

      source = ActiveSupport::TimeWithZone.new(@date_time, @zone)
      time = source.to_time

      assert_instance_of Time, time
      assert_equal @date_time, time.getutc
      assert_instance_of Time, time.getutc
      assert_equal @utc_offset, time.utc_offset
    end
  end

  def test_twz_to_time_frozen_preserves_timezone
    with_env_tz "US/Eastern" do
      source = ActiveSupport::TimeWithZone.new(@utc_time, @zone).freeze
      time = source.to_time

      assert_instance_of Time, time
      assert_equal @utc_time, time.getutc
      assert_instance_of Time, time.getutc
      assert_equal @utc_offset, time.utc_offset
      assert_not_predicate time, :frozen?

      source = ActiveSupport::TimeWithZone.new(@date_time, @zone).freeze
      time = source.to_time

      assert_instance_of Time, time
      assert_equal @date_time, time.getutc
      assert_instance_of Time, time.getutc
      assert_equal @utc_offset, time.utc_offset
      assert_not_predicate time, :frozen?
    end
  end

  def test_string_to_time_preserves_timezone
    with_env_tz "US/Eastern" do
      source = "2016-04-23T15:11:12+01:00"
      time = source.to_time

      assert_instance_of Time, time
      assert_equal @utc_time, time.getutc
      assert_equal @utc_offset, time.utc_offset
    end
  end

  def test_string_to_time_frozen_preserves_timezone
    with_env_tz "US/Eastern" do
      source = "2016-04-23T15:11:12+01:00"
      time = source.to_time

      assert_instance_of Time, time
      assert_equal @utc_time, time.getutc
      assert_equal @utc_offset, time.utc_offset
      assert_not_predicate time, :frozen?
    end
  end
end
