LayoutTests/js/dom/regexp-test-null-string.html

<p>
This page tests the exception you get when you test a regular expression against
the null string. If the test passes, you'll see a PASS message below.
</p>
<pre id="console"></pre>

<script>
function log(s)
{
    document.getElementById("console").appendChild(document.createTextNode(s + "\n"));
}

function shouldBe(a, aDescription, b)
{
    if (a == b) {
        log("PASS: " + aDescription + " should be '" + String(b) + "' and is.");
        return;
    }
    
    log ("FAIL: " + aDescription + " should be '" + String(b) + "' but instead is '" + String(a) + "'.");
}

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

var result = /define/.test();
shouldBe(result, "result", true);
</script>