mirror of
https://github.com/whoisclebs/lodash.git
synced 2026-02-01 15:57:48 +00:00
d5ef31929a
* Install test dependencies. * Add initial test files. These files were created using a simplistic AST manipulator using `recast` to preserve formatting. There's bound to be a huge chunk of errors, but this serves as a good start. QUnit was replaced with Mocha, with ES2015 imports running via `esm`. As far as possible, QUnit-specific syntax has been replaced with Mocha's `describe` and `it`, while the native Node.js `assert` module is used for assertions. Files in the `test` directory ending in `.test.js` will be treated as test files. * Add initial passing files to test run.
43 lines
1.3 KiB
JavaScript
43 lines
1.3 KiB
JavaScript
import assert from 'assert';
|
|
import lodashStable from 'lodash';
|
|
import invertBy from '../invertBy.js';
|
|
|
|
describe('invertBy', function() {
|
|
var object = { 'a': 1, 'b': 2, 'c': 1 };
|
|
|
|
it('should transform keys by `iteratee`', function() {
|
|
var expected = { 'group1': ['a', 'c'], 'group2': ['b'] };
|
|
|
|
var actual = invertBy(object, function(value) {
|
|
return 'group' + value;
|
|
});
|
|
|
|
assert.deepStrictEqual(actual, expected);
|
|
});
|
|
|
|
it('should use `_.identity` when `iteratee` is nullish', function() {
|
|
var values = [, null, undefined],
|
|
expected = lodashStable.map(values, lodashStable.constant({ '1': ['a', 'c'], '2': ['b'] }));
|
|
|
|
var actual = lodashStable.map(values, function(value, index) {
|
|
return index ? invertBy(object, value) : invertBy(object);
|
|
});
|
|
|
|
assert.deepStrictEqual(actual, expected);
|
|
});
|
|
|
|
it('should only add multiple values to own, not inherited, properties', function() {
|
|
var object = { 'a': 'hasOwnProperty', 'b': 'constructor' },
|
|
expected = { 'hasOwnProperty': ['a'], 'constructor': ['b'] };
|
|
|
|
assert.ok(lodashStable.isEqual(invertBy(object), expected));
|
|
});
|
|
|
|
it('should return a wrapped value when chaining', function() {
|
|
var wrapped = _(object).invertBy();
|
|
|
|
assert.ok(wrapped instanceof _);
|
|
assert.deepEqual(wrapped.value(), { '1': ['a', 'c'], '2': ['b'] });
|
|
});
|
|
});
|