ECMA 6 - Test Symbol Type

[emravera]

Generate a test suite for:

// Symbol type, unique and inmutable type
Symbol("foo") !== Symbol("foo")
const foo = Symbol()
const bar = Symbol()
typeof foo === "symbol"
typeof bar === "symbol"
let obj = {}
obj[foo] = "foo"
obj[bar] = "bar"
JSON.stringify(obj) // {}
Object.keys(obj) // []
Object.getOwnPropertyNames(obj) // []
Object.getOwnPropertySymbols(obj) // [ foo, bar ]

// Global symbols indexed through unique keys

Symbol.for("app.foo") === Symbol.for("app.foo")
const foo = Symbol.for("app.foo")
const bar = Symbol.for("app.bar")
Symbol.keyFor(foo) === "app.foo"
Symbol.keyFor(bar) === "app.bar"
typeof foo === "symbol"
typeof bar === "symbol"
let obj = {}
obj[foo] = "foo"
obj[bar] = "bar"
JSON.stringify(obj) // {}
Object.keys(obj) // []
Object.getOwnPropertyNames(obj) // []
Object.getOwnPropertySymbols(obj) // [ foo, bar ]

More info at:

• http://es6-features.org/#SymbolType
• http://es6-features.org/#GlobalSymbols