ladybird/Tests/LibWeb/Text/input/input-number-float.html

<input id="input_number" type="number" />
<script src="include.js"></script>
<script>
    function testInputGetter(element, value) {
        try {
            element.value = value;
            println(`${element.valueAsNumber}`);
        } catch (e) {
            println(`error`);
        }
    };

    function testInputSetter(element, valueAsNumber) {
        try {
            element.valueAsNumber = valueAsNumber;
            println(`${element.value}`);
        } catch (e) {
            println(`error`);
        }
    };

    test(() => {
        let input = document.getElementById("input_number");

        println(`Getting values (string to number)`);
        // Basic valid floating point number parsing
        testInputGetter(input, "42");
        testInputGetter(input, "-42");
        testInputGetter(input, "+42");
        testInputGetter(input, "0");
        testInputGetter(input, "0.5");
        testInputGetter(input, "-0.5");
        testInputGetter(input, ".5");
        testInputGetter(input, ".");
        // Floating point parsing with leading and trailing whitespace
        testInputGetter(input, "  123  ");
        testInputGetter(input, "\t-123\t");
        testInputGetter(input, "\n 0.5 \n");
        // Handling NaN and Infinity values
        testInputGetter(input, "NaN");
        testInputGetter(input, "Infinity");
        testInputGetter(input, "-Infinity");
        // Parsing numbers in exponential notation
        testInputGetter(input, "1e2");
        testInputGetter(input, "1e-2");
        testInputGetter(input, "1.5e3");
        testInputGetter(input, "-1.5e-3");
        // Handling special values 2^1024 and -2^1024
        testInputGetter(input, "2e1024");
        testInputGetter(input, "-2e1024");
        // Handling invalid floating point number inputs
        testInputGetter(input, "abc");
        testInputGetter(input, "1.2.3");
        testInputGetter(input, "++123");
        testInputGetter(input, "--123");
        // Handling negative zero (-0)
        testInputGetter(input, "-0");
        testInputGetter(input, "+0");
        // Handling large numbers and overflow
        testInputGetter(input, "1e308");
        testInputGetter(input, "-1e308");
        testInputGetter(input, "1e309"); // overflow
        testInputGetter(input, "-1e309"); // overflow

        println(`Setting values (number to string)`);
        testInputSetter(input, 42);
        testInputSetter(input, -42);
        testInputSetter(input, 0.5);
        testInputSetter(input, -0.5);
        testInputSetter(input, 1e2);
        testInputSetter(input, 1e-2);
        testInputSetter(input, 1.5e3);
        testInputSetter(input, -1.5e-3);
        testInputSetter(input, 2e1024);
        testInputSetter(input, -2e1024);
        testInputSetter(input, 1e308);
        testInputSetter(input, -1e308);
        testInputSetter(input, 1e309);
        testInputSetter(input, -1e309);
        testInputSetter(input, -0);
        testInputSetter(input, +0);
        testInputSetter(input, 0);
    });
</script>