ruby MiniTest：断言自定义异常（ERROR）

Posted 2021-05-16

require 'minitest/autorun'

class MyError < StandardError
end

class MyExplorationsTest << Minitest::Test
  def test_raises_my_exception
    proc { fail MyError }.must_raise MyError
  end
end

# 1) Error:
# NoMethodError: undefined method `assert_raises' for nil:NilClass