Test Form with Singles

<?xml version="1.0"?>
<form>
    <label>test form with singles</label>
    <fieldset autoRun="true">
        <input type="dropdown" token="host">
            <label>Choose host</label>
            <prefix>host="</prefix>
            <suffix>"</suffix>
            <choice value="*">All</choice>
            <default>*</default>
            <populatingSearch fieldForValue="host" fieldForLabel="host">| metadata type=hosts index=_internal | dedup host | table host | sort host</populatingSearch>
        </input>
        <input type="dropdown" token="sourcetype">
            <label>Choose Sourcetype</label>
            <prefix>sourcetype="</prefix>
            <suffix>"</suffix>
            <choice value="*">All</choice>
            <default>*</default>
            <populatingSearch fieldForValue="sourcetype" fieldForLabel="sourcetype">| metadata type=sourcetypes index=_internal | dedup sourcetype | table sourcetype | sort sourcetype</populatingSearch>
        </input>
        <input type="time">
            <default>Last 4 hours</default>
        </input>
    </fieldset>
    <searchTemplate>index=_internal $host$ $sourcetype$</searchTemplate>
    <row>
        <single>
            <title> Earliest Event</title>
            <searchPostProcess> | stats earliest(_time) as earliest | fieldformat earliest=strftime(earliest, "%c")</searchPostProcess>
        </single>
        <single>
            <title>Latest Event</title>
            <searchPostProcess> | stats latest(_time) as latest | fieldformat latest=strftime(latest, "%c")</searchPostProcess>
        </single>
    </row>
</form>