Tes-unitt data initialization method in Ruby

when testing with Ruby, there are a lot of times when you need some sort of data initialization and a post-mortem restore of the data, and these methods are sorted out below.
Require "Test/unit"

class Testanion <test::unit::testcase
#用例执行前只执行一遍初始化数据
def Self.startup
anion= ' startup '
puts anion
End
#用例执行后只执行一遍初始化数据
def Self.shutdown
puts "shutdown"
End
#每一执行一个用例之前执行
def setup
puts "Setup"
End
#每执行一个用例之后执行
def teardown
puts "teardown"
End
#case
def Test_01_fir
puts "first"
End
def test_02_sec
puts "second"
End
End

Tes-unitt data initialization method in Ruby