LayoutTests/editing/selection/move-by-character-brute-force.html

<meta charset="UTF-8">
<script src="../../fast/js/resources/js-test-pre.js"></script>
<div id="test"></div>
<script>
description("This test checks that we have simple caret motion up to a certain limit");

function hasSimpleCaretMovement(charCode) {
    var testString = "aaaaa" + String.fromCharCode(charCode) + "bbbb";
    element.textContent = testString;
    var selection = window.getSelection();
    selection.setPosition(element, 0);
    for (var i = 0; i < testString.length; ++i) {
        selection.modify("move", "forward", "character");
        if (selection.baseOffset != i + 1)
            return false;
    }
    return true;
}

function toHex(i) {
    var hex = i.toString(16);
    while (hex.length < 4)
        hex = "0" + hex;
    return hex;
}

var element = document.getElementById("test");

debug("Positive control:");
shouldBeTrue("hasSimpleCaretMovement(0x0041)");
debug("");

debug("Negative control:");
shouldBeFalse("hasSimpleCaretMovement(0x0300)");
debug("");

debug("Brute force:");
for (var i = 1; i < 1024; ++i) {
    if (i >= 0x0300 && i <= 0x036F)
        shouldBeFalse("hasSimpleCaretMovement(i) // i = U+" + toHex(i));
    else
        shouldBeTrue("hasSimpleCaretMovement(i) // i = U+" + toHex(i));
}

element.textContent = "";
</script>
<script src="../../fast/js/resources/js-test-post.js"></script>