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20 lines
501 B
JavaScript
20 lines
501 B
JavaScript
test("basic functionality", () => {
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const o = {
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[Symbol.toPrimitive]: hint => {
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lastHint = hint;
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},
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};
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let lastHint;
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// Calls ToPrimitive abstract operation with 'string' hint
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String(o);
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expect(lastHint).toBe("string");
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// Calls ToPrimitive abstract operation with 'number' hint
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+o;
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expect(lastHint).toBe("number");
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// Calls ToPrimitive abstract operation with 'default' hint
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"" + o;
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expect(lastHint).toBe("default");
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});
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