<pre id="console"></pre>
<div id="test1">Lorem<span style="float: left;">-</span>ipsum</div>
<div id="test2">Lorem<span style="float: left;"></span>ipsum</div>
<div id="test3">Lorem<div style="position: absolute;">-</div>ipsum</div>
<div id="test4">Lorem<div style="position: absolute;"></div>ipsum</div>
<script>
    function log(message)
    {
        var console = document.getElementById("console");
        console.appendChild(document.createTextNode(message + "\n"));
    }

    function test(id, expected)
    {
        var actual = document.getElementById(id).innerText;
        if (actual == expected)
            log(id + " PASS: innerText is " + actual + " as expected");
        else
            log(id + " FAIL: innerText is " + actual + " instead of " + expected);
    }

    if (window.testRunner)
        testRunner.dumpAsText();

    test("test1", "Lorem-ipsum");
    test("test2", "Loremipsum");
    test("test3", "Lorem-ipsum");
    test("test4", "Loremipsum");
</script>