Please try this code:
<span style="display:inline-block">
<input id="test1" class="easyui-textbox" data-options="label:'Test1',labelPosition:'top'">
</span>
<span style="display:inline-block">
<input id="test2" class="easyui-textbox" data-options="label:'Test2',labelPosition:'top'">
</span>