# redis-eval-mock

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Provides a mock of the `EVAL` functionality in Redis using `lua.vm.js` in order
to test Lua scripts. It is intended to be used along with an existing mock of
the `redis` library, and calls back into it for Redis calls executed from Lua.
In addition, it provides mocks of the `cjson` and `cmsgpack` libraries provided
by default to Lua by Redis.

## API

### _default_(client)

Replaces the implementations of `eval` and `evalsha` in _client_ with functional
mocks. Returns the client. The implementation does not currently include a mock
script cache, so `evalsha` will always throw a `NOSCRIPT` error.

## Example

```ts
import * as redis from 'redis';
import * as mock from 'redis-mock';

import mockEval from 'redis-eval-mock';

jest.spyOn(redis, 'createClient').mockImplementation(() =>
    mockEval(mock.createClient())
);
```

## Contributing

This project has adopted the
[Microsoft Open Source Code of Conduct](https://opensource.microsoft.com/codeofconduct/).
For more information see the
[Code of Conduct FAQ](https://opensource.microsoft.com/codeofconduct/faq/) or
contact [opencode@microsoft.com](mailto:opencode@microsoft.com) with any
additional questions or comments.