Files
lodash/test/negate.js
Benjamin Tan d5ef31929a Add initial test files from lodash v4. (#4172)
* 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.
2019-02-12 09:11:32 -08:00

40 lines
1.1 KiB
JavaScript

import assert from 'assert';
import lodashStable from 'lodash';
import { _, isEven, stubTrue } from './utils.js';
describe('negate', function() {
it('should create a function that negates the result of `func`', function() {
var negate = _.negate(isEven);
assert.strictEqual(negate(1), true);
assert.strictEqual(negate(2), false);
});
it('should create a function that negates the result of `func`', function() {
var negate = _.negate(isEven);
assert.strictEqual(negate(1), true);
assert.strictEqual(negate(2), false);
});
it('should create a function that accepts multiple arguments', function() {
var argCount,
count = 5,
negate = _.negate(function() { argCount = arguments.length; }),
expected = lodashStable.times(count, stubTrue);
var actual = lodashStable.times(count, function(index) {
switch (index) {
case 0: negate(); break;
case 1: negate(1); break;
case 2: negate(1, 2); break;
case 3: negate(1, 2, 3); break;
case 4: negate(1, 2, 3, 4);
}
return argCount == index;
});
assert.deepStrictEqual(actual, expected);
});
});