13 lines
357 B
JavaScript
13 lines
357 B
JavaScript
test("basic functionality", () => {
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const nan = undefined + 1;
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expect(nan + "").toBe("NaN");
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expect(NaN + "").toBe("NaN");
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expect(nan !== nan).toBeTrue();
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expect(NaN !== NaN).toBeTrue();
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expect(nan).toBeNaN();
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expect(NaN).toBeNaN();
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expect(0).not.toBeNaN();
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expect(!!nan).toBeFalse();
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expect(!!NaN).toBeFalse();
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});
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