很难找到关于 Mocha 的任何文档,所以恐怕我完全在海上。我发现传递参数的存根方法存在问题。因此,例如,如果我设置这样的类:
class Red
def gets(*args)
@input.gets(*args)
end
def puts(*args)
@output.puts(*args)
end
def initialize
@input = $stdin
@output = $stdout
end
private
def first_method
input = gets.chomp
if input == "test"
second_method(input)
end
end
def second_method(value)
puts value
second_method(value)
end
end
是的,它是人为的,但它是对您可能有一个不想在测试中调用的方法的想法的简化。
所以我可能会写一个测试,例如:
setup do
@project = Red.new
@project.instance_variable_set(:@input, StringIO.new("test\n"))
@project.stubs(:second_method)
end
should "pass input value to second_method" do
@project.expects(:second_method).with("test").once
@project.instance_eval {first_method}
end
现在我希望这会通过。但相反,我收到了这个相当神秘的错误消息:
Errno::ENOENT: No such file or directory - getcwd
/Users/i0n/.rvm/gems/ruby-1.9.2-head/gems/mocha-0.9.8/lib/mocha/backtrace_filter.rb:12:in `expand_path'
/Users/i0n/.rvm/gems/ruby-1.9.2-head/gems/mocha-0.9.8/lib/mocha/backtrace_filter.rb:12:in `block in filtered'
/Users/i0n/.rvm/gems/ruby-1.9.2-head/gems/mocha-0.9.8/lib/mocha/backtrace_filter.rb:12:in `reject'
/Users/i0n/.rvm/gems/ruby-1.9.2-head/gems/mocha-0.9.8/lib/mocha/backtrace_filter.rb:12:in `filtered'
/Users/i0n/.rvm/gems/ruby-1.9.2-head/gems/mocha-0.9.8/lib/mocha/expectation_error.rb:10:in `initialize'
/Users/i0n/.rvm/gems/ruby-1.9.2-head/gems/mocha-0.9.8/lib/mocha/mockery.rb:53:in `new'
/Users/i0n/.rvm/gems/ruby-1.9.2-head/gems/mocha-0.9.8/lib/mocha/mockery.rb:53:in `verify'
/Users/i0n/.rvm/gems/ruby-1.9.2-head/gems/mocha-0.9.8/lib/mocha/api.rb:156:in `mocha_verify'
/Users/i0n/.rvm/gems/ruby-1.9.2-head/gems/mocha-0.9.8/lib/mocha/integration/mini_test/version_131_and_above.rb:27:in `run'
这对我来说绝对没有任何意义,除了 Mochas 肠子深处的某些东西刚刚响起。如果我在没有将参数传递给第二种方法的情况下编写相同类型的测试,我不会有任何问题。我错过了什么吗?