<?xml version="1.0" encoding="UTF-8"?>
<definitions id="definitions"
    xmlns="http://www.omg.org/spec/BPMN/20100524/MODEL" xmlns:activiti="http://activiti.org/bpmn"
    targetNamespace="Examples">

    <signal id="theSignal" name="The Signal" />

    <process id="processWithSignalStart1">
        <startEvent id="theStart">
          <signalEventDefinition id="theSignalEventDefinition" signalRef="theSignal" />
        </startEvent>
        <sequenceFlow id="flow1" sourceRef="theStart" targetRef="theTask" />
        <userTask id="theTask" name="Task in process A" />
        <sequenceFlow id="flow2" sourceRef="theTask" targetRef="theEnd" />
        <endEvent id="theEnd" />
    </process>

</definitions>

Add bpmn for unit test
Add bpmn for unit test