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// |reftest| skip-if(!this.hasOwnProperty("Intl"))
// Nickel rounding.
{
let nf = new Intl.NumberFormat("en", {
minimumFractionDigits: 2,
maximumFractionDigits: 2,
roundingIncrement: 5,
});
assertEq(nf.format(1.22), "1.20");
assertEq(nf.format(1.224), "1.20");
assertEq(nf.format(1.225), "1.25");
assertEq(nf.format(1.23), "1.25");
}
// Dime rounding.
{
let nf = new Intl.NumberFormat("en", {
minimumFractionDigits: 2,
maximumFractionDigits: 2,
roundingIncrement: 10,
});
assertEq(nf.format(1.24), "1.20");
assertEq(nf.format(1.249), "1.20");
assertEq(nf.format(1.250), "1.30");
assertEq(nf.format(1.25), "1.30");
}
// Rounding increment option is rounded down.
{
let nf1 = new Intl.NumberFormat("en", {
minimumFractionDigits: 0,
maximumFractionDigits: 0,
roundingIncrement: 10,
});
let nf2 = new Intl.NumberFormat("en", {
minimumFractionDigits: 0,
maximumFractionDigits: 0,
roundingIncrement: 10.1,
});
let nf3 = new Intl.NumberFormat("en", {
minimumFractionDigits: 0,
maximumFractionDigits: 0,
roundingIncrement: 10.9,
});
assertEq(nf1.resolvedOptions().roundingIncrement, 10);
assertEq(nf2.resolvedOptions().roundingIncrement, 10);
assertEq(nf3.resolvedOptions().roundingIncrement, 10);
assertEq(nf1.format(123), "120");
assertEq(nf2.format(123), "120");
assertEq(nf3.format(123), "120");
}
// |minimumFractionDigits| must be equal to |maximumFractionDigits| when
// |roundingIncrement| is used.
//
// |minimumFractionDigits| defaults to zero.
{
let nf = new Intl.NumberFormat("en", {
roundingIncrement: 10,
// minimumFractionDigits: 0, (default)
maximumFractionDigits: 0,
});
let resolved = nf.resolvedOptions();
assertEq(resolved.minimumFractionDigits, 0);
assertEq(resolved.maximumFractionDigits, 0);
assertEq(resolved.roundingIncrement, 10);
assertEq(nf.format(123), "120");
assertEq(nf.format(123.456), "120");
}
// |maximumFractionDigitsDefault| is set to |minimumFractionDigitsDefault| when
// roundingIncrement isn't equal to 1.
{
let options = {
roundingIncrement: 10,
// minimumFractionDigits: 0, (default)
// maximumFractionDigits: 0, (default)
};
let nf = new Intl.NumberFormat("en", options);
assertEq(nf.resolvedOptions().minimumFractionDigits, 0);
assertEq(nf.resolvedOptions().maximumFractionDigits, 0);
}
// |maximumFractionDigits| must be equal to |minimumFractionDigits| when
// roundingIncrement isn't equal to 1.
{
let options = {
roundingIncrement: 10,
// minimumFractionDigits: 0, (default)
maximumFractionDigits: 1,
};
assertThrowsInstanceOf(() => new Intl.NumberFormat("en", options), RangeError);
}
// Invalid values.
for (let roundingIncrement of [-1, 0, Infinity, NaN]){
let options = {
roundingIncrement,
minimumFractionDigits: 0,
maximumFractionDigits: 0,
};
assertThrowsInstanceOf(() => new Intl.NumberFormat("en", options), RangeError);
}
if (typeof reportCompare === "function")
reportCompare(true, true);
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