mirror of
https://github.com/RGBCube/serenity
synced 2025-10-31 17:42:43 +00:00
23 lines
740 B
JavaScript
23 lines
740 B
JavaScript
test("object with custom toString", () => {
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const o = { toString: () => "foo" };
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expect(o + "bar").toBe("foobar");
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expect([o, "bar"].toString()).toBe("foo,bar");
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});
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test("object with uncallable toString and custom valueOf", () => {
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const o = { toString: undefined, valueOf: () => "foo" };
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expect(o + "bar").toBe("foobar");
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expect([o, "bar"].toString()).toBe("foo,bar");
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});
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test("object with custom valueOf", () => {
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const o = { valueOf: () => 42 };
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expect(Number(o)).toBe(42);
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expect(o + 1).toBe(43);
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});
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test("object with uncallable valueOf and custom toString", () => {
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const o = { valueOf: undefined, toString: () => "42" };
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expect(Number(o)).toBe(42);
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expect(o + 1).toBe("421");
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});
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