e5d578a849
Disable the confirmation dialog when deleting files in the VS Code explorer to streamline the development workflow and reduce friction during file management operations.
59 lines
2.1 KiB
JavaScript
59 lines
2.1 KiB
JavaScript
'use strict';
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/** @type {(t: import('tape').Test) => false | void} */
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// eslint-disable-next-line consistent-return
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module.exports = function runSymbolTests(t) {
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t.equal(typeof Symbol, 'function', 'global Symbol is a function');
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if (typeof Symbol !== 'function') { return false; }
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t.notEqual(Symbol(), Symbol(), 'two symbols are not equal');
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/*
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t.equal(
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Symbol.prototype.toString.call(Symbol('foo')),
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Symbol.prototype.toString.call(Symbol('foo')),
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'two symbols with the same description stringify the same'
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);
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*/
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/*
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var foo = Symbol('foo');
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t.notEqual(
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String(foo),
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String(Symbol('bar')),
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'two symbols with different descriptions do not stringify the same'
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);
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*/
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t.equal(typeof Symbol.prototype.toString, 'function', 'Symbol#toString is a function');
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// t.equal(String(foo), Symbol.prototype.toString.call(foo), 'Symbol#toString equals String of the same symbol');
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t.equal(typeof Object.getOwnPropertySymbols, 'function', 'Object.getOwnPropertySymbols is a function');
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/** @type {{ [k in symbol]?: unknown }} */
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var obj = {};
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var sym = Symbol('test');
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var symObj = Object(sym);
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t.notEqual(typeof sym, 'string', 'Symbol is not a string');
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t.equal(Object.prototype.toString.call(sym), '[object Symbol]', 'symbol primitive Object#toStrings properly');
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t.equal(Object.prototype.toString.call(symObj), '[object Symbol]', 'symbol primitive Object#toStrings properly');
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var symVal = 42;
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obj[sym] = symVal;
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// eslint-disable-next-line no-restricted-syntax, no-unused-vars
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for (var _ in obj) { t.fail('symbol property key was found in for..in of object'); }
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t.deepEqual(Object.keys(obj), [], 'no enumerable own keys on symbol-valued object');
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t.deepEqual(Object.getOwnPropertyNames(obj), [], 'no own names on symbol-valued object');
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t.deepEqual(Object.getOwnPropertySymbols(obj), [sym], 'one own symbol on symbol-valued object');
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t.equal(Object.prototype.propertyIsEnumerable.call(obj, sym), true, 'symbol is enumerable');
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t.deepEqual(Object.getOwnPropertyDescriptor(obj, sym), {
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configurable: true,
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enumerable: true,
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value: 42,
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writable: true
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}, 'property descriptor is correct');
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};
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