assert('Hash#inspect') do
h = { "c" => 300, "a" => 100, "d" => 400, "c" => 300 }
+ h["recur"] = h
ret = h.to_s
assert_include ret, '"c"=>300'
assert_include ret, '"a"=>100'
assert_include ret, '"d"=>400'
+ assert_include ret, '"recur"=>{...}'
end
assert('Hash#rehash') do