如何在Node.js中的Mocha测试中为函数提供标头

Question

I am trying to unit test the validate function

test function:

it('validating request', function(done) {
    var API = new API(Id, key , List);
    assert.isTrue(API.validate());

    done();
  }); 

main api:

API.prototype.validate = function validate(req, res) {

  var api_req = req.headers['reqH'];
  if (api_req == null || api_req == '') {
    res.send("Error:");
    return;
  }

I am getting the following error: Cannot read property 'headers' of undefined.

Answer 1

In the following line you use headers on req which is one of the parameters of the function

var api_req = req.headers['reqH'];

but when you call the validate function, you didn't pass any parameters to it:

assert.isTrue(API.validate());

so req and res are undefined for this call