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Node.js library that allows you to inject your mocks into modules code
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README.md

require-mocked

Node.js library that allows you to inject your mocks into your modules code.

Installation

npm install require-mocked

Usage

Suppose you want to test some module that uses fs (eiser directly, or throught one of its dependencies) but you want it to use some stub instead of the real FS.

var requireMocked = require('require-mocked')(__filename);

var moduleUnderTest = requireMocked('./path/to/your/module', {
    mocks: {
        fs: {
            //your stub code
        }
    }
});

To create requireMocked function you need to pass your module's file name. It will be used to resolve paths the same way as original require for your module. requireMocked accepts following parameters:

  • path - path to the module you want to load;
  • opts - loading options:
    • opts.mocks - mocks to use when loading module or its dependencies. Keys of the object represents module ids, values - the object to use instead of real module.
    • opts.resolves - stub require.resolve for the loaded module so it will return given path for instead of original. Format is {"moduleId": "stub/path"}.
    • opts.ignoreMocks - array of the module id that will always load real modules instead of mocks.

Similar projects

  • SandboxedModule - doesn't support recursive mocking, but may be more functional in other areas.

License

Licensed under MIT license.

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