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LibJS: Implement Number.isFinite()

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Like the global isFinite() without the number coercion.
This commit is contained in:
Linus Groh 2020-04-26 18:24:58 +01:00 • committed by Andreas Kling
parent b094c064d8
commit c350f5ae67
6 changed files with 40 additions and 2 deletions
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29
Libraries/LibJS/Tests/Number.isFinite.js Normal file
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load("test-common.js");
try {
assert(Number.isFinite.length === 1);
assert(Number.isFinite(0) === true);
assert(Number.isFinite(1.23) === true);
assert(Number.isFinite(42) === true);
assert(Number.isFinite("") === false);
assert(Number.isFinite("0") === false);
assert(Number.isFinite("42") === false);
assert(Number.isFinite(true) === false);
assert(Number.isFinite(false) === false);
assert(Number.isFinite(null) === false);
assert(Number.isFinite([]) === false);
assert(Number.isFinite() === false);
assert(Number.isFinite(NaN) === false);
assert(Number.isFinite(undefined) === false);
assert(Number.isFinite(Infinity) === false);
assert(Number.isFinite(-Infinity) === false);
assert(Number.isFinite("foo") === false);
assert(Number.isFinite({}) === false);
assert(Number.isFinite([1, 2, 3]) === false);
console.log("PASS");
} catch (e) {
console.log("FAIL: " + e.message);
}