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How can I mock a client and a server in Mocha using NodeJs. Specifically, I have the following code:
app.post ('path name', function (req, res) { // Some Action res.send(response); }); I want to mock the req, res parameters and test res (status, header, message).
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In Jest, Node. js modules are automatically mocked in your tests when you place the mock files in a __mocks__ folder that's next to the node_modules folder. For example, if you a file called __mock__/fs. js , then every time the fs module is called in your test, Jest will automatically use the mocks.
Mocha is a testing library for Node. js, created to be a simple, extensible, and fast. It's used for unit and integration testing, and it's a great candidate for BDD (Behavior Driven Development).
Mocha itself doesn't provide mock/stub/spy type functionality. Sinon is a popular library that does. The home page includes examples of testing ajax as well as their Fake XMLHTTPRequest object.
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