Verifies that find and replace will insert the replacement text at the selection, if no matches are specified. This test requires WebKitTestRunner.

After replacing 'banana' with 'pear':
| "
        "
| <p>
|   id="p1"
|   "Apple <#selection-anchor>pear<#selection-focus> orange."
| "
        "
| <p>
|   id="p2"
|   "Kiwi banana pear."
| "
    "

After inserting 'watermelon' after 'Kiwi':
| "
        "
| <p>
|   id="p1"
|   "Apple pear orange."
| "
        "
| <p>
|   id="p2"
|   "Kiwi<#selection-anchor>watermelon<#selection-focus> banana pear."
| "
    "