<apex:page >
    <apex:includeLightning />
    <div id="lightning"></div>
    <script type="text/javascript">
    $Lightning.use("c:LockerTestApp", function() {
        $Lightning.createComponent('c:LockerTestComp', {}, "lightning", function(cmp) { });
    });
    </script>
</apex:page>

<aura:application extends="ltng:outApp" >
</aura:application>

<aura:component >
    <ltng:require scripts="{!$Resource.LockerTest}" afterScriptsLoaded="{!c.doInit}" />
    Hello World
</aura:component>

({
    doInit : function(component, event, helper) {
        lockerTest();
    }
})

var lockerTest = function() {
    alert('it worked');
}