ladybird/Libraries/LibJS/Tests/Number.isFinite.js
Linus Groh c350f5ae67 LibJS: Implement Number.isFinite()
Like the global isFinite() without the number coercion.
2020-04-26 20:36:59 +02:00

29 lines
967 B
JavaScript

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);
}