2 files changed, 19 insertions, 0 deletions
diff --git a/activesupport/test/test_test.rb b/activesupport/test/test_test.rb
index 8a71ef4324..0fa08c0e3a 100644
--- a/activesupport/test/test_test.rb
+++ b/activesupport/test/test_test.rb
@@ -162,6 +162,10 @@ class TimeHelperTest < ActiveSupport::TestCase
     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
@@ -201,4 +205,16 @@ class TimeHelperTest < ActiveSupport::TestCase
     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
 end
diff --git a/activesupport/test/time_zone_test.rb b/activesupport/test/time_zone_test.rb
index 1107b48460..cd79efbe8c 100644
--- a/activesupport/test/time_zone_test.rb
+++ b/activesupport/test/time_zone_test.rb
@@ -97,6 +97,7 @@ class TimeZoneTest < ActiveSupport::TestCase
     assert_equal Date.new(2000, 1, 1), ActiveSupport::TimeZone['Eastern Time (US & Canada)'].today
     travel_to(Time.utc(2000, 1, 2, 5)) # midnight Jan 2 EST
     assert_equal Date.new(2000, 1, 2), ActiveSupport::TimeZone['Eastern Time (US & Canada)'].today
+    travel_back
   end
 
   def test_tomorrow
@@ -108,6 +109,7 @@ class TimeZoneTest < ActiveSupport::TestCase
     assert_equal Date.new(2000, 1, 2), ActiveSupport::TimeZone['Eastern Time (US & Canada)'].tomorrow
     travel_to(Time.utc(2000, 1, 2, 5)) # midnight Jan 2 EST
     assert_equal Date.new(2000, 1, 3), ActiveSupport::TimeZone['Eastern Time (US & Canada)'].tomorrow
+    travel_back
   end
 
   def test_yesterday
@@ -119,6 +121,7 @@ class TimeZoneTest < ActiveSupport::TestCase
     assert_equal Date.new(1999, 12, 31), ActiveSupport::TimeZone['Eastern Time (US & Canada)'].yesterday
     travel_to(Time.utc(2000, 1, 2, 5)) # midnight Jan 2 EST
     assert_equal Date.new(2000, 1, 1), ActiveSupport::TimeZone['Eastern Time (US & Canada)'].yesterday
+    travel_back
   end
 
   def test_local