mirror of
https://github.com/RGBCube/serenity
synced 2025-10-29 13:42:37 +00:00
23 lines
862 B
JavaScript
23 lines
862 B
JavaScript
test("basic functionality", () => {
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const localSym = Symbol("foo");
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const globalSym = Symbol.for("foo");
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expect(localSym).not.toBe(globalSym);
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expect(localSym).not.toBe(Symbol("foo"));
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expect(globalSym).not.toBe(Symbol("foo"));
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expect(globalSym).toBe(Symbol.for("foo"));
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expect(localSym.toString()).toBe("Symbol(foo)");
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expect(globalSym.toString()).toBe("Symbol(foo)");
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expect(Symbol.for(1).description).toBe("1");
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expect(Symbol.for(true).description).toBe("true");
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expect(Symbol.for({}).description).toBe("[object Object]");
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expect(Symbol.for().description).toBe("undefined");
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expect(Symbol.for(null).description).toBe("null");
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});
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test("symbol argument throws an error", () => {
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expect(() => {
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Symbol.for(Symbol());
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}).toThrowWithMessage(TypeError, "Cannot convert symbol to string");
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});
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