Files
lodash/test/isWeakSet.test.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

43 lines
1.4 KiB
JavaScript

import assert from 'assert';
import lodashStable from 'lodash';
import { weakSet, falsey, stubFalse, args, slice, set, symbol, realm } from './utils.js';
import isWeakSet from '../isWeakSet.js';
describe('isWeakSet', function() {
it('should return `true` for weak sets', function() {
if (WeakSet) {
assert.strictEqual(isWeakSet(weakSet), true);
}
});
it('should return `false` for non weak sets', function() {
var expected = lodashStable.map(falsey, stubFalse);
var actual = lodashStable.map(falsey, function(value, index) {
return index ? isWeakSet(value) : isWeakSet();
});
assert.deepStrictEqual(actual, expected);
assert.strictEqual(isWeakSet(args), false);
assert.strictEqual(isWeakSet([1, 2, 3]), false);
assert.strictEqual(isWeakSet(true), false);
assert.strictEqual(isWeakSet(new Date), false);
assert.strictEqual(isWeakSet(new Error), false);
assert.strictEqual(isWeakSet(_), false);
assert.strictEqual(isWeakSet(slice), false);
assert.strictEqual(isWeakSet({ 'a': 1 }), false);
assert.strictEqual(isWeakSet(1), false);
assert.strictEqual(isWeakSet(/x/), false);
assert.strictEqual(isWeakSet('a'), false);
assert.strictEqual(isWeakSet(set), false);
assert.strictEqual(isWeakSet(symbol), false);
});
it('should work with weak sets from another realm', function() {
if (realm.weakSet) {
assert.strictEqual(isWeakSet(realm.weakSet), true);
}
});
});