embargo

Breaking interface change in v0.1.0

In v0.1.0 embargo supports overriding cached modules, e.g. a module already require()d can be stubbed. This prompted interface change from using subscript notation to a function call ([] -> ()).

Embargo

Embargo is a helper (or a mock) that replaces specific require calls with a user-defined stub.

Install

$ npm install embargo

Use

To override a module:

var embargo = require('embargo');

embargo(someModule, {
  'doStuff': function(arg, cb) {
    cb(null, 'it worked!');
  }
})

var someModule = require('someModule');

console.log(someModule.doStuff(null, function(err, result){
  console.log(err, result); // null, 'it worked!'
});

Signature of embargo function is (module_name_string, stub).

By doing this, you're saying that require('someModule') will return an object with a doStuff property that you specified in overrides object, instead of actual module exports. This override will propagate to all require calls in the current VM. It should also work for modules required through relative path.

License

(The MIT License)

Copyright (c) 2012 Ilya Shaisultanov. http://geekli.st/diversario

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the 'Software'), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.