67 lines
1.3 KiB
JavaScript
67 lines
1.3 KiB
JavaScript
/**
|
|
* Copyright (c) 2013-present, Facebook, Inc.
|
|
* All rights reserved.
|
|
*
|
|
* This source code is licensed under the BSD-style license found in the
|
|
* LICENSE file in the root directory of this source tree. An additional grant
|
|
* of patent rights can be found in the PATENTS file in the same directory.
|
|
*/
|
|
'use strict';
|
|
|
|
var invertObject = require('../invertObject');
|
|
|
|
var objectValues = target => Object.keys(target).map(key => target[key]);
|
|
|
|
describe('invertObject', () => {
|
|
it('should return an empty object for an empty input', () => {
|
|
expect(invertObject({})).toEqual({});
|
|
});
|
|
|
|
it('should invert key-values', () => {
|
|
expect(
|
|
invertObject({
|
|
a: '3',
|
|
b: '4',
|
|
})
|
|
).toEqual({
|
|
3: 'a',
|
|
4: 'b',
|
|
});
|
|
});
|
|
|
|
it("should take the last value when there're duplications in vals", () => {
|
|
expect(
|
|
invertObject({
|
|
a: '3',
|
|
b: '4',
|
|
c: '3',
|
|
})
|
|
).toEqual({
|
|
4: 'b',
|
|
3: 'c',
|
|
});
|
|
});
|
|
|
|
it('should preserve the original order', () => {
|
|
expect(
|
|
Object.keys(
|
|
invertObject({
|
|
a: '3',
|
|
b: '4',
|
|
c: '3',
|
|
})
|
|
)
|
|
).toEqual(['3', '4']);
|
|
|
|
expect(
|
|
objectValues(
|
|
invertObject({
|
|
a: '3',
|
|
b: '4',
|
|
c: '3',
|
|
})
|
|
)
|
|
).toEqual(['c', 'b']);
|
|
});
|
|
});
|