Use Test::Unit::TestCase instead of MiniTest::Unit::TestCase. Because tests of fiddle already used customized assertions of ruby core.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@59321 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Use Test::Unit::TestCase instead of MiniTest::Unit::TestCase. Because
tests of fiddle already used customized assertions of ruby core.
testcase.
Remove needless includes for Test::Unit::Assertions.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@59321 b2dd03c8-39d4-4d8f-98ff-823fe69b080e