CODEWITHSUNDEEP
node.jstypescriptsinonstubrequest-promise
user773737
user773737

Reputation:

stub an object without requiring a method

I have something like:

sandbox.stub(rp, 'get').resolves(successResponse)

which returns my custom response when it hits this code: 

return await rp.get(url, options)

But how can I do something like this:

    sandbox.stub(rp).resolves(successResponse)

Which can return a custom response when it hits this code?

    return await rp(url, options)

When I attempt "stubbing" the entire object, I get this error when I run the test:

TypeError: Attempted to wrap undefined property undefined as function
      at wrapMethod (node_modules\sinon\lib\sinon\util\core\wrap-method.js:70:21)
      at stub (node_modules\sinon\lib\sinon\stub.js:58:44)
      at Object.stub (node_modules\sinon\lib\sinon\collection.js:93:33)

rp is request-promise-native, which wraps request

Upvotes: 0

Views: 1178

Answers (2)

mantoni
mantoni

Reputation: 1622

You might find the Sinon HowTo about Link Seams helpful: http://sinonjs.org/how-to/link-seams-commonjs/

Upvotes: 0

user773737
user773737

Reputation:

From @Troopers' link in the comments above, it seems like this isn't possible: Doing this is not technically possible without faking the entire module loading system.

So I followed the suggestion here: https://github.com/request/request/issues/2181 and used mock-require to stub rp. I also changed up my code that used to call rp.get(), so that it just calls rp(), since I couldn't also figure out how to stub both rp() and rp.get()

Upvotes: 1

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