react-native/jest/__tests__/hasteImpl-test.js
empyrical 03476a225e Add support for out-of-tree platform plugins (#20825)
Summary:
This pull request adds the ability for a platform developer to provide a `"haste"` key under the `"rnpm"` key in their `package.json` which allows the packager to pick up that platform's javascript files. The intent is to remove the need to have custom platforms hardcoded in. This is inspired by the `"jest": { "haste": {} }` key used by jest.

For example, React Native Dom would have an entry like:

```json
{
  "rnpm": {
    "haste": {
      "providesModuleNodeModules": [
        "react-native-dom"
      ],
      "platforms": [
        "dom"
      ]
    }
  }
}
```

Support for more keys (path blacklists perhaps?) could be added in the future.

This succeeds #20662, as per a discussion I had with matthargett.

I've got an open discussion over here as well: https://github.com/react-native-community/discussions-and-proposals/issues/21
Pull Request resolved: https://github.com/facebook/react-native/pull/20825

Differential Revision: D9596429

Pulled By: hramos

fbshipit-source-id: a02f0da0bea8870bdc45d55e23da8ccbc36249f2
2018-08-30 16:38:07 -07:00

94 lines
2.0 KiB
JavaScript

/**
* Copyright (c) 2014-present, Facebook, Inc.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*
* @format
* @emails oncall+js_foundation
*/
'use strict';
const path = require('path');
const {getHasteName} = require('../hasteImpl');
function getPath(...parts) {
return path.join(__dirname, '..', '..', ...parts);
}
it('returns the correct haste name for a RN library file', () => {
expect(
getHasteName(
getPath(
'Libraries',
'Components',
'AccessibilityInfo',
'AccessibilityInfo.js',
),
),
).toEqual('AccessibilityInfo');
});
it('returns the correct haste name for a file with a platform suffix', () => {
for (const platform of ['android', 'ios', 'native']) {
expect(
getHasteName(
getPath(
'Libraries',
'Components',
'AccessibilityInfo',
`AccessibilityInfo.${platform}.js`,
),
),
).toEqual('AccessibilityInfo');
}
});
it('returns the correct haste name for a file with a flow suffix', () => {
expect(
getHasteName(
getPath(
'Libraries',
'Components',
'AccessibilityInfo',
'AccessibilityInfo.ios.js.flow',
),
),
).toEqual('AccessibilityInfo');
});
it('does not calculate the haste name for a file that is not JS', () => {
expect(
getHasteName(
getPath(
'Libraries',
'Components',
'AccessibilityInfo',
'AccessibilityInfo.txt',
),
),
).toBe(undefined);
});
it('does not calculate the haste name for a file outside of RN', () => {
expect(
getHasteName(getPath('..', 'Libraries', 'AccessibilityInfo.txt')),
).toBe(undefined);
});
it('does not calculate the haste name for a blacklisted file', () => {
expect(
getHasteName(
getPath(
'Libraries',
'Components',
'__mocks__',
'AccessibilityInfo',
'AccessibilityInfo.js',
),
),
).toBe(undefined);
});