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15 lines
502 B
JavaScript
15 lines
502 B
JavaScript
test("basic functionality", () => {
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expect(Math.sin).toHaveLength(1);
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expect(Math.sin(0)).toBe(0);
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expect(Math.sin(null)).toBe(0);
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expect(Math.sin('')).toBe(0);
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expect(Math.sin([])).toBe(0);
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expect(Math.sin(Math.PI * 3 / 2)).toBe(-1);
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expect(Math.sin(Math.PI / 2)).toBe(1);
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expect(Math.sin()).toBeNaN();
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expect(Math.sin(undefined)).toBeNaN();
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expect(Math.sin([1, 2, 3])).toBeNaN();
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expect(Math.sin({})).toBeNaN();
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expect(Math.sin("foo")).toBeNaN();
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});
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