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author | Minteck <contact@minteck.org> | 2021-12-21 16:52:28 +0100 |
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committer | Minteck <contact@minteck.org> | 2021-12-21 16:52:28 +0100 |
commit | 46e43f4bde4a35785b4997b81e86cd19f046b69b (patch) | |
tree | c53c2f826f777f9d6b2d249dab556feb72a6c3a6 /src/node_modules/has-symbols/test/tests.js | |
download | langdetect-46e43f4bde4a35785b4997b81e86cd19f046b69b.tar.gz langdetect-46e43f4bde4a35785b4997b81e86cd19f046b69b.tar.bz2 langdetect-46e43f4bde4a35785b4997b81e86cd19f046b69b.zip |
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Diffstat (limited to 'src/node_modules/has-symbols/test/tests.js')
-rw-r--r-- | src/node_modules/has-symbols/test/tests.js | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/src/node_modules/has-symbols/test/tests.js b/src/node_modules/has-symbols/test/tests.js new file mode 100644 index 0000000..93ff0ea --- /dev/null +++ b/src/node_modules/has-symbols/test/tests.js @@ -0,0 +1,54 @@ +'use strict'; + +module.exports = function runSymbolTests(t) { + t.equal(typeof Symbol, 'function', 'global Symbol is a function'); + + if (typeof Symbol !== 'function') { return false }; + + t.notEqual(Symbol(), Symbol(), 'two symbols are not equal'); + + /* + t.equal( + Symbol.prototype.toString.call(Symbol('foo')), + Symbol.prototype.toString.call(Symbol('foo')), + 'two symbols with the same description stringify the same' + ); + */ + + var foo = Symbol('foo'); + + /* + t.notEqual( + String(foo), + String(Symbol('bar')), + 'two symbols with different descriptions do not stringify the same' + ); + */ + + t.equal(typeof Symbol.prototype.toString, 'function', 'Symbol#toString is a function'); + // t.equal(String(foo), Symbol.prototype.toString.call(foo), 'Symbol#toString equals String of the same symbol'); + + t.equal(typeof Object.getOwnPropertySymbols, 'function', 'Object.getOwnPropertySymbols is a function'); + + var obj = {}; + var sym = Symbol('test'); + var symObj = Object(sym); + t.notEqual(typeof sym, 'string', 'Symbol is not a string'); + t.equal(Object.prototype.toString.call(sym), '[object Symbol]', 'symbol primitive Object#toStrings properly'); + t.equal(Object.prototype.toString.call(symObj), '[object Symbol]', 'symbol primitive Object#toStrings properly'); + + var symVal = 42; + obj[sym] = symVal; + for (sym in obj) { t.fail('symbol property key was found in for..in of object'); } + + t.deepEqual(Object.keys(obj), [], 'no enumerable own keys on symbol-valued object'); + t.deepEqual(Object.getOwnPropertyNames(obj), [], 'no own names on symbol-valued object'); + t.deepEqual(Object.getOwnPropertySymbols(obj), [sym], 'one own symbol on symbol-valued object'); + t.equal(Object.prototype.propertyIsEnumerable.call(obj, sym), true, 'symbol is enumerable'); + t.deepEqual(Object.getOwnPropertyDescriptor(obj, sym), { + configurable: true, + enumerable: true, + value: 42, + writable: true + }, 'property descriptor is correct'); +}; |