test_minitest_unit.rb: fix "random" sort

* test/minitest/test_minitest_unit.rb (test_test_methods_random):
  hack to fix the order by avoiding duplicate keys.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@54975 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

test/minitest/test_minitest_unit.rb

@@ -1623,15 +1623,11 @@ class TestMiniTestUnitTestCase < MiniTest::Unit::TestCase
       def test_test1; assert "does not matter" end
       def test_test2; assert "does not matter" end
       def test_test3; assert "does not matter" end
+      @test_order = [1, 0, 2]
+      def self.rand(n) @test_order.shift; end
     end
 
-    srand 42
+    expected = %w(test_test2 test_test1 test_test3)
-    expected = case
-               when maglev? then
-                 %w(test_test2 test_test3 test_test1)
-               else
-                 %w(test_test2 test_test1 test_test3)
-               end
     assert_equal expected, sample_test_case.test_methods
   end