ladybird/Libraries/LibJS/Tests/Number.isInteger.js
Linus Groh 3a12a8a348 LibJS: Make Number.isInteger() test pass on Serenity
The parser doesn't like many decimals, an issue with our strtod()
implementation. Let's use division instead - all tests green again :^)
2020-04-28 14:49:43 +02:00

38 lines
1.5 KiB
JavaScript

load("test-common.js");
try {
assert(Number.isInteger.length === 1);
assert(Number.isInteger(0) === true);
assert(Number.isInteger(42) === true);
assert(Number.isInteger(-10000) === true);
assert(Number.isInteger(5) === true);
assert(Number.isInteger(5.0) === true);
assert(Number.isInteger(5 + 1/10000000000000000) === true);
// FIXME: values outside of i32's range should still return true
// assert(Number.isInteger(+2147483647 + 1) === true);
// assert(Number.isInteger(-2147483648 - 1) === true);
// assert(Number.isInteger(99999999999999999999999999999999999) === true);
assert(Number.isInteger(5 + 1/1000000000000000) === false);
assert(Number.isInteger(1.23) === false);
assert(Number.isInteger("") === false);
assert(Number.isInteger("0") === false);
assert(Number.isInteger("42") === false);
assert(Number.isInteger(true) === false);
assert(Number.isInteger(false) === false);
assert(Number.isInteger(null) === false);
assert(Number.isInteger([]) === false);
assert(Number.isInteger(Infinity) === false);
assert(Number.isInteger(-Infinity) === false);
assert(Number.isInteger(NaN) === false);
assert(Number.isInteger() === false);
assert(Number.isInteger(undefined) === false);
assert(Number.isInteger("foo") === false);
assert(Number.isInteger({}) === false);
assert(Number.isInteger([1, 2, 3]) === false);
console.log("PASS");
} catch (e) {
console.log("FAIL: " + e.message);
}