Rafael Oleza e7b0590f18 Remove sinon dependency
Summary:
This diff removes the `sinon` dependency from `metro` and `react-native-github`. It was only used in a handful of tests and having to learn and remember another mocking API just for these cases was not worth it IMO.

While doing the migration, most of the things that `sinon` provides can be done with `jest` in a very similar (and user friendly) way.

I've found, though, two small things that are more user friendly with `sinon`. I'm documenting them here because it may be worth adding them to jest:

With `sinon`:

```
stub.throws(new Error('foo'));
```

With `jest`:

```
mock.mockImplementation(() => {
  throw new Error('foo');
});
```

Taking into account that `jest` has a `mockRejectedValue` method for mocks (to return a rejected promise) I don't see any reason why it does not have a `mockThrowError` method.

With `sinon`:

```
expect(mock1.calledBefore(mock2)).toBeTruthy();
```

With `jest`:

```
expect(mock1.mock.invocationCallOrder[0]).toBeLessThan(
  mock2.mock.invocationCallOrder[0],
);
```

There's a community matcher that adds this matcher in `jest-extended`: https://github.com/jest-community/jest-extended#tohavebeencalledbefore, but we're not using `jest-extended` in `xplat/js`.

Reviewed By: jeanlauliac

Differential Revision: D10238331

fbshipit-source-id: 5441125b69596ad85bf8f56d203cfd20759bc358
2018-10-10 13:02:12 -07:00
..
2018-10-10 13:02:12 -07:00
2018-09-26 16:48:48 -07:00
2018-10-01 22:23:18 -07:00