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LibJS: Let isNaN() with no argument return true, add tests

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This commit is contained in:
Linus Groh 2020-04-22 18:05:22 +01:00 • committed by Andreas Kling
parent 602a36970f
commit 8ff2881b1a
2 changed files with 30 additions and 3 deletions
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28
Libraries/LibJS/Tests/isNaN.js Normal file
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@ -0,0 +1,28 @@
load("test-common.js");
try {
assert(isNaN.length === 1);
assert(isNaN(0) === false);
assert(isNaN(42) === false);
assert(isNaN("") === false);
assert(isNaN("0") === false);
assert(isNaN("42") === false);
assert(isNaN(true) === false);
assert(isNaN(false) === false);
assert(isNaN(null) === false);
assert(isNaN([]) === false);
assert(isNaN(Infinity) === false);
assert(isNaN(-Infinity) === false);
assert(isNaN() === true);
assert(isNaN(NaN) === true);
assert(isNaN(undefined) === true);
assert(isNaN("foo") === true);
assert(isNaN({}) === true);
assert(isNaN([1, 2, 3]) === true);
console.log("PASS");
} catch (e) {
console.log("FAIL: " + e.message);
}