如何模拟Net :: HTTP :: Post？ [英] How to mock Net::HTTP::Post?
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问题描述
是的，我知道最好使用webmock，但我想知道如何在RSpec中模拟这个方法：
Yes, I know it is best to use webmock, but I would like to know how to mock this method in RSpec:
def method_to_test
url = URI.parse uri
req = Net::HTTP::Post.new url.path
res = Net::HTTP.start(url.host, url.port) do |http|
http.request req, foo: 1
end
res
end
这是RSpec：
let( :uri ) { 'http://example.com' }
specify 'HTTP call' do
http = mock :http
Net::HTTP.stub!(:start).and_yield http
http.should_receive(:request).with(Net::HTTP::Post.new(uri), foo: 1)
.and_return 202
method_to_test.should == 202
end
测试失败，因为带的似乎试图匹配NET :: HTTP :: Post对象：
The test fails because with seems to be trying to match the NET::HTTP::Post object:
RSpec::Mocks::MockExpectationError: (Mock :http).request(#<Net::HTTP::Post POST>, {:foo=>"1"})
expected: 1 time
received: 0 times
Mock :http received :request with unexpected arguments
expected: (#<Net::HTTP::Post POST>, {:foo=>"1"})
got: (#<Net::HTTP::Post POST>, {:foo=>"1"})
如何匹配专业版perly？
How to match properly?
推荐答案
如果您不关心确切的实例，可以使用 an_instance_of 方法：
If you don't care about the exact instance, you could use the an_instance_of method:
http.should_receive(:request).with(an_instance_of(Net::HTTP::Post), foo: 1)
.and_return 202
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