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serenity / Libraries / LibJS / Tests / NaN-basic.js

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Jack Karamanian LibJS: Return false for NaN numbers in Value::to_boolean() 6y ago

57bd194e

 1try {
 2    var nan = undefined + 1;
 3    assert(nan + "" == "NaN");
 4    assert(NaN + "" == "NaN");
 5    assert(nan !== nan);
 6    assert(NaN !== NaN);
 7    assert(isNaN(nan) === true);
 8    assert(isNaN(NaN) === true);
 9    assert(isNaN(0) === false);
10    assert(isNaN(undefined) === true);
11    assert(isNaN(null) === false);
12    assert(isNaN(Infinity) === false);
13    assert(!!NaN === false);
14    assert(!!nan === false);
15  
16    console.log("PASS");
17} catch (e) {
18    console.log("FAIL: " + e);
19}