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https://github.com/RGBCube/serenity
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e6dadd9e5b
Here's a reasonably faithful implementation of ECMAScript 2021 18.2.5. Some corner cases are not covered, I've left them as FIXME's in the included unit test. Also I had to tweak JS::Value::to_i32() to always convert infinity to zero, which is in accordance with ToInt32 AFAICT.
51 lines
2.1 KiB
JavaScript
51 lines
2.1 KiB
JavaScript
test("basic parseInt() functionality", () => {
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expect(parseInt("0")).toBe(0);
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expect(parseInt("100")).toBe(100);
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expect(parseInt("1000", 16)).toBe(4096);
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expect(parseInt('0xF', 16)).toBe(15)
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expect(parseInt('F', 16)).toBe(15)
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expect(parseInt('17', 8)).toBe(15)
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expect(parseInt(021, 8)).toBe(15)
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expect(parseInt('015', 10)).toBe(15)
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expect(parseInt(15.99, 10)).toBe(15)
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expect(parseInt('15,123', 10)).toBe(15)
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expect(parseInt('FXX123', 16)).toBe(15)
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expect(parseInt('1111', 2)).toBe(15)
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expect(parseInt('15 * 3', 10)).toBe(15)
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expect(parseInt('15e2', 10)).toBe(15)
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expect(parseInt('15px', 10)).toBe(15)
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expect(parseInt('12', 13)).toBe(15)
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expect(parseInt('Hello', 8)).toBeNaN();
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expect(parseInt('546', 2)).toBeNaN();
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expect(parseInt('-F', 16)).toBe(-15);
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expect(parseInt('-0F', 16)).toBe(-15);
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expect(parseInt('-0XF', 16)).toBe(-15);
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expect(parseInt(-15.1, 10)).toBe(-15);
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expect(parseInt('-17', 8)).toBe(-15);
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expect(parseInt('-15', 10)).toBe(-15);
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expect(parseInt('-1111', 2)).toBe(-15);
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expect(parseInt('-15e1', 10)).toBe(-15);
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expect(parseInt('-12', 13)).toBe(-15);
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expect(parseInt(4.7, 10)).toBe(4);
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expect(parseInt('0e0', 16)).toBe(224);
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expect(parseInt('123_456')).toBe(123);
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// FIXME: expect(parseInt(4.7 * 1e22, 10)).toBe(4);
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// FIXME: expect(parseInt(0.00000000000434, 10)).toBe(4);
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// FIXME: expect(parseInt(0.0000001,11)).toBe(1);
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// FIXME: expect(parseInt(0.000000124,10)).toBe(1);
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// FIXME: expect(parseInt(1e-7,10)).toBe(1);
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// FIXME: expect(parseInt(1000000000000100000000,10)).toBe(1);
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// FIXME: expect(parseInt(123000000000010000000000,10)).toBe(1);
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// FIXME: expect(parseInt(1e+21,10)).toBe(1);
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// FIXME: expect(parseInt('900719925474099267n')).toBe(900719925474099300)
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});
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test("parseInt() radix is coerced to a number", () => {
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const obj = { valueOf() { return 8; } };
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expect(parseInt('11', obj)).toBe(9);
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obj.valueOf = function() { return 1; }
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expect(parseInt('11', obj)).toBeNaN();
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obj.valueOf = function() { return Infinity; }
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expect(parseInt('11', obj)).toBe(11);
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});
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