chromium/third_party/blink/web_tests/editing/selection/caret_at_soft_line_break.html

<!doctype html>
<title>An upstream caret can be impossible to create</title>
<script src="../../resources/testharness.js"></script>
<script src="../../resources/testharnessreport.js"></script>
<script src="../assert_selection.js"></script>
<script>
// This is a testcase for https://bugs.webkit.org/show_bug.cgi?id=6476. Creating
// an upstream caret with the mouse was impossible if the upstream and
// downstream carets were separated only by unrendered content.
//
// This test uses the eventSender to do mouse clicks. To run it manually, click
// in the space after all the text on the first line in the above editable
// region. Clicking should create a caret after the first space after the 'e'.
selection_test(
    [
        '<div contenteditable style="width:250px;">',
            'Try to create a caret after this lin<span id="clickme">e</span>',
            ' <span></span>thisshouldbeonthesecondline',
        '</div>',
    ],
    selection => {
        if (!window.eventSender)
            throw 'This test requires eventSender.';
        const e = selection.document.getElementById('clickme');
        const x = selection.computeLeft(e) + e.offsetWidth + 3;
        const y = selection.computeTop(e) + e.offsetHeight / 2;

        eventSender.mouseMoveTo(x, y);
        eventSender.mouseDown();
        eventSender.mouseUp();
    },
    [
        '<div contenteditable style="width:250px;">',
            'Try to create a caret after this lin<span id="clickme">e|</span>',
            ' <span></span>thisshouldbeonthesecondline',
        '</div>',
    ]);
</script>