Files
lodash/test/delay.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

68 lines
1.4 KiB
JavaScript

import assert from 'assert';
import { slice } from './utils.js';
import delay from '../delay.js';
describe('delay', function() {
it('should delay `func` execution', function(done) {
var pass = false;
delay(function() { pass = true; }, 32);
setTimeout(function() {
assert.ok(!pass);
}, 1);
setTimeout(function() {
assert.ok(pass);
done();
}, 64);
});
it('should provide additional arguments to `func`', function(done) {
var args;
delay(function() {
args = slice.call(arguments);
}, 32, 1, 2);
setTimeout(function() {
assert.deepStrictEqual(args, [1, 2]);
done();
}, 64);
});
it('should use a default `wait` of `0`', function(done) {
var pass = false;
delay(function() { pass = true; });
assert.ok(!pass);
setTimeout(function() {
assert.ok(pass);
done();
}, 0);
});
it('should be cancelable', function(done) {
var pass = true,
timerId = delay(function() { pass = false; }, 32);
clearTimeout(timerId);
setTimeout(function() {
assert.ok(pass);
done();
}, 64);
});
it('should work with mocked `setTimeout`', function() {
var pass = false,
setTimeout = root.setTimeout;
setProperty(root, 'setTimeout', function(func) { func(); });
delay(function() { pass = true; }, 32);
setProperty(root, 'setTimeout', setTimeout);
assert.ok(pass);
});
});