ruby - rspec中的存根正则表达式

Question

如何对正则表达式进行存根？例如

# somewhere deep in the code
reg = Regexp.new("foo bar")
res = reg.match string

# somewhere in rspec
reg = Regexp.new("foo bar")
reg.stub(:match).with(string).and_return "rspec_res" #doesn't work

Answer 1

我认为这应该有效：

reg = stub :match => "rspec_res"
Regex.stub(:new) { reg }