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LibJS: Add parseFloat()

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Linus Groh 2020-05-17 15:12:34 +01:00 • committed by Andreas Kling
parent cc42d75209
commit 6f6b089aa0
3 changed files with 87 additions and 0 deletions
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71
Libraries/LibJS/Tests/parseFloat.js Normal file
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@ -0,0 +1,71 @@
load("test-common.js");
try {
const NUMBER_TEST_CASES = [
[0, 0],
[1, 1],
[.23, 0.23],
[1.23, 1.23],
[0.0123E+2, 1.23],
[1.23e4, 12300],
[Infinity, Infinity]
];
NUMBER_TEST_CASES.forEach(test => {
const value = test[0];
const result = test[1];
assert(parseFloat(value) === result);
assert(parseFloat(+value) === result);
assert(parseFloat(-value) === -result);
});
const STRING_TEST_CASES = [
["0", 0],
["1", 1],
[".23", 0.23],
["1.23", 1.23],
["0.0123E+2", 1.23],
["1.23e4", 12300],
["Infinity", Infinity]
];
STRING_TEST_CASES.forEach(test => {
const value = test[0];
const result = test[1];
assert(parseFloat(value) === result);
assert(parseFloat(`+${value}`) === result);
assert(parseFloat(`-${value}`) === -result);
assert(parseFloat(`${value}foo`) === result);
assert(parseFloat(`+${value}foo`) === result);
assert(parseFloat(`-${value}foo`) === -result);
assert(parseFloat(` \n \t ${value} \v foo `) === result);
assert(parseFloat(` \r -${value} \f \n\n foo `) === -result);
assert(parseFloat({ toString: () => value }) === result);
});
const NAN_TEST_CASES = [
"",
[],
[],
true,
false,
null,
undefined,
NaN,
"foo123",
"foo+123",
"fooInfinity",
"foo+Infinity"
];
assert(isNaN(parseFloat()));
assert(isNaN(parseFloat("", 123, Infinity)));
NAN_TEST_CASES.forEach(value => {
assert(isNaN(parseFloat(value)));
});
console.log("PASS");
} catch (e) {
console.log("FAIL: " + e)
}