1 files changed, 72 insertions, 0 deletions
diff --git a/activesupport/test/time_travel_test.rb b/activesupport/test/time_travel_test.rb
new file mode 100644
index 0000000000..065539671d
--- /dev/null
+++ b/activesupport/test/time_travel_test.rb
@@ -0,0 +1,72 @@
+require 'abstract_unit'
+require 'active_support/core_ext/date'
+require 'active_support/core_ext/numeric/time'
+
+class TimeTravelTest < ActiveSupport::TestCase
+  setup do
+    Time.stubs now: Time.now
+  end
+
+  teardown do
+    travel_back
+  end
+
+  def test_time_helper_travel
+    expected_time = Time.now + 1.day
+    travel 1.day
+
+    assert_equal expected_time.to_s(:db), Time.now.to_s(:db)
+    assert_equal expected_time.to_date, Date.today
+  end
+
+  def test_time_helper_travel_with_block
+    expected_time = Time.now + 1.day
+
+    travel 1.day do
+      assert_equal expected_time.to_s(:db), Time.now.to_s(:db)
+      assert_equal expected_time.to_date, Date.today
+    end
+
+    assert_not_equal expected_time.to_s(:db), Time.now.to_s(:db)
+    assert_not_equal expected_time.to_date, Date.today
+  end
+
+  def test_time_helper_travel_to
+    expected_time = Time.new(2004, 11, 24, 01, 04, 44)
+    travel_to expected_time
+
+    assert_equal expected_time, Time.now
+    assert_equal Date.new(2004, 11, 24), Date.today
+  end
+
+  def test_time_helper_travel_to_with_block
+    expected_time = Time.new(2004, 11, 24, 01, 04, 44)
+
+    travel_to expected_time do
+      assert_equal expected_time, Time.now
+      assert_equal Date.new(2004, 11, 24), Date.today
+    end
+
+    assert_not_equal expected_time, Time.now
+    assert_not_equal Date.new(2004, 11, 24), Date.today
+  end
+
+  def test_time_helper_travel_back
+    expected_time = Time.new(2004, 11, 24, 01, 04, 44)
+
+    travel_to expected_time
+    assert_equal expected_time, Time.now
+    assert_equal Date.new(2004, 11, 24), Date.today
+    travel_back
+
+    assert_not_equal expected_time, Time.now
+    assert_not_equal Date.new(2004, 11, 24), Date.today
+  end
+
+  def test_travel_to_will_reset_the_usec_to_avoid_mysql_rouding
+    travel_to Time.utc(2014, 10, 10, 10, 10, 50, 999999) do
+      assert_equal 50, Time.now.sec
+      assert_equal 0, Time.now.usec
+    end
+  end
+end