1 files changed, 47 insertions, 0 deletions
diff --git a/activesupport/test/test_case_test.rb b/activesupport/test/test_case_test.rb
index c93192f207..5e852c8050 100644
--- a/activesupport/test/test_case_test.rb
+++ b/activesupport/test/test_case_test.rb
@@ -172,3 +172,50 @@ class TestCaseTaggedLoggingTest < ActiveSupport::TestCase
     assert_match "#{self.class}: #{name}\n", @out.string
   end
 end
+
+class TestOrderTest < ActiveSupport::TestCase
+  def setup
+    @original_test_order = ActiveSupport::TestCase.test_order
+  end
+
+  def teardown
+    ActiveSupport::TestCase.test_order = @original_test_order
+  end
+
+  def test_defaults_to_sorted_with_warning
+    ActiveSupport::TestCase.test_order = nil
+
+    assert_equal :sorted, assert_deprecated { ActiveSupport::TestCase.test_order }
+
+    # It should only produce a deprecation warning the first time this is accessed
+    assert_equal :sorted, assert_not_deprecated { ActiveSupport::TestCase.test_order }
+    assert_equal :sorted, assert_not_deprecated { ActiveSupport.test_order }
+  end
+
+  def test_test_order_is_global
+    ActiveSupport::TestCase.test_order = :random
+
+    assert_equal :random, ActiveSupport.test_order
+    assert_equal :random, ActiveSupport::TestCase.test_order
+    assert_equal :random, self.class.test_order
+    assert_equal :random, Class.new(ActiveSupport::TestCase).test_order
+
+    ActiveSupport.test_order = :sorted
+
+    assert_equal :sorted, ActiveSupport.test_order
+    assert_equal :sorted, ActiveSupport::TestCase.test_order
+    assert_equal :sorted, self.class.test_order
+    assert_equal :sorted, Class.new(ActiveSupport::TestCase).test_order
+  end
+
+  def test_i_suck_and_my_tests_are_order_dependent!
+    ActiveSupport::TestCase.test_order = :random
+
+    klass = Class.new(ActiveSupport::TestCase) do
+      i_suck_and_my_tests_are_order_dependent!
+    end
+
+    assert_equal :alpha, klass.test_order
+    assert_equal :random, ActiveSupport::TestCase.test_order
+  end
+end