Bloomberg event creation for unit test (BLPAPI)

marketDataSchema.xml

<?xml version="1.0" encoding="UTF-8" ?>
<ServiceDefinition name="blp.mktdata" version="1.0.1.0">
    <service name="//blp/mktdata" version="1.0.0.0" authorizationService="//blp/apiauth">
        <event name="MarketDataEvents" eventType="MarketDataUpdate">
            <eventId>0</eventId>
        </event>
    </service>
    <schema>
        <sequenceType name="MarketDataUpdate">
            <element name="BEST_BID" type="Float64" id="1" minOccurs="0" maxOccurs="1"/>
            <element name="BEST_ASK" type="Float64" id="2" minOccurs="0" maxOccurs="1"/>
            <element name="MKTDATA_EVENT_TYPE" type="MktDataEventType" id="3" minOccurs="0" maxOccurs="1"/>
            <element name="MKTDATA_EVENT_SUBTYPE" type="MktDataEventSubType" id="4" minOccurs="0" maxOccurs="1"/>
        </sequenceType>
        <enumerationType name="MktDataEventType">
            <enumerator name="SUMMARY">
                <value String="SUMMARY"/>
            </enumerator>
        </enumerationType>
        <enumerationType name="MktDataEventSubType">
            <enumerator name="INTRADAY">
                <value String="INTRADAY"/>
            </enumerator>
        </enumerationType>
    </schema>
</ServiceDefinition>

MyTest.java

public class MyTest {
  // Only work for Blpapi Java 3.16.1 and above
  @Test
  public void myTest() {
    Service service;
    try (InputStream is = getClass().getResourceAsStream("/marketDataSchema.xml")) {
        service = TestUtil.deserializeService(is);
    }

    SchemaElementDefinition elementDef = service.getEventDefinition(new Name("MarketDataEvents"));
    Event event = TestUtil.createEvent(Event.EventType.SUBSCRIPTION_DATA);
    MessageProperties messageProps = new MessageProperties();
    messageProps.setCorrelationId(new CorrelationID(new MyContext()));
    
    MessageFormatter formatter = TestUtil.appendMessage(event, elementDef, messageProps);
    String messageContent =
        "<MarketDataEvents>"
            + "    <BEST_BID>30822.29</BEST_BID>"
            + "    <BEST_ASK>30937.5</BEST_ASK>"
            + "    <MKTDATA_EVENT_TYPE>SUMMARY</MKTDATA_EVENT_TYPE>"
            + "    <MKTDATA_EVENT_SUBTYPE>INTRADAY</MKTDATA_EVENT_SUBTYPE>"
            + "</MarketDataEvents>";
    formatter.formatMessageXml(messageContent);

    MyEventHandler eventHandler = new MyEventHandler();
    eventHandler.processEvent(event, session);
  }
}