Fixed test_setup_teardown_behavior for mt5. (phiggins)

[git-p4: depot-paths = "//src/minitest/dev/": change = 8476]

test/minitest/test_minitest_spec.rb

@@ -589,7 +589,9 @@ def test_children
   end
 end
 
-class TestMeta < Minitest::Test
+require "minitest/metametameta"
+
+class TestMeta < MetaMetaMetaTestCase
   parallelize_me!
 
   def util_structure
@@ -695,20 +697,15 @@ def test_structure
   end
 
   def test_setup_teardown_behavior
-    skip "not yet"
-
     _, _, z, before_list, after_list = util_structure
 
-    @tu = Minitest::Unit.new
-    Minitest::Unit.runner = nil # protect the outer runner from the inner tests
+    @tu = z
 
-    with_output do
-      tc = z.new :test_0002_anonymous
-      tc.run @tu
-    end
+    run_tu_with_fresh_reporter
 
-    assert_equal [1, 2, 3], before_list
-    assert_equal [3, 2, 1], after_list
+    size = z.runnable_methods.size
+    assert_equal [1, 2, 3] * size, before_list
+    assert_equal [3, 2, 1] * size, after_list
   end
 
   def test_describe_first_structure
@@ -746,8 +743,6 @@ def xyz; end
   end
 end
 
-require "minitest/metametameta"
-
 class TestSpecInTestCase < MetaMetaMetaTestCase
   def setup
     super