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authorGravatar Piotr Russ <mail@pruss.it> 2020-11-16 00:10:28 +0100
committerGravatar Piotr Russ <mail@pruss.it> 2020-11-16 00:10:28 +0100
commite06ec920f7a5d784e674c4c4b4e6d1da3dc7391d (patch)
tree55713f725f77b44ebfec86e4eec3ce33e71458ca /node_modules/has-symbols/test/tests.js
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Diffstat (limited to 'node_modules/has-symbols/test/tests.js')
-rw-r--r--node_modules/has-symbols/test/tests.js54
1 files changed, 54 insertions, 0 deletions
diff --git a/node_modules/has-symbols/test/tests.js b/node_modules/has-symbols/test/tests.js
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+++ b/node_modules/has-symbols/test/tests.js
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+'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');
+};