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* 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.
54 lines
1.8 KiB
JavaScript
54 lines
1.8 KiB
JavaScript
import assert from 'assert';
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import lodashStable from 'lodash';
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import { weakMap, falsey, stubFalse, args, slice, map, symbol, realm } from './utils.js';
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import isWeakMap from '../isWeakMap.js';
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describe('isWeakMap', function() {
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it('should return `true` for weak maps', function() {
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if (WeakMap) {
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assert.strictEqual(isWeakMap(weakMap), true);
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}
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});
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it('should return `false` for non weak maps', function() {
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var expected = lodashStable.map(falsey, stubFalse);
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var actual = lodashStable.map(falsey, function(value, index) {
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return index ? isWeakMap(value) : isWeakMap();
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});
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assert.deepStrictEqual(actual, expected);
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assert.strictEqual(isWeakMap(args), false);
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assert.strictEqual(isWeakMap([1, 2, 3]), false);
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assert.strictEqual(isWeakMap(true), false);
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assert.strictEqual(isWeakMap(new Date), false);
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assert.strictEqual(isWeakMap(new Error), false);
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assert.strictEqual(isWeakMap(_), false);
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assert.strictEqual(isWeakMap(slice), false);
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assert.strictEqual(isWeakMap({ 'a': 1 }), false);
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assert.strictEqual(isWeakMap(map), false);
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assert.strictEqual(isWeakMap(1), false);
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assert.strictEqual(isWeakMap(/x/), false);
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assert.strictEqual(isWeakMap('a'), false);
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assert.strictEqual(isWeakMap(symbol), false);
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});
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it('should work for objects with a non-function `constructor` (test in IE 11)', function() {
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var values = [false, true],
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expected = lodashStable.map(values, stubFalse);
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var actual = lodashStable.map(values, function(value) {
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return isWeakMap({ 'constructor': value });
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});
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assert.deepStrictEqual(actual, expected);
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});
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it('should work with weak maps from another realm', function() {
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if (realm.weakMap) {
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assert.strictEqual(isWeakMap(realm.weakMap), true);
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}
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});
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});
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