Setting mapped port of TestContainer in DynamicPropertySource - ibm-mq

Question

Given: TestContainer as an integration framework, Spring boot app, ibm mq as a broker I try to test it, cant connect with default settings, catch:
Caused by: com.ibm.mq.MQException: JMSCMQ0001: IBM MQ call failed with compcode '2' ('MQCC_FAILED') reason '2538' ('MQRC_HOST_NOT_AVAILABLE').
at com.ibm.msg.client.wmq.common.internal.Reason.createException(Reason.java:203)
... 118 common frames omitted
Caused by: com.ibm.mq.jmqi.JmqiException: CC=2;RC=2538;AMQ9204: Connection to host 'localhost(1414)' rejected. [1=com.ibm.mq.jmqi.JmqiException[CC=2;RC=2538;AMQ9204: Connection to host 'localhost/127.0.0.1:1414' rejected. [1=java.net.ConnectException[Connection refused (Connection refused)],3=localhost/127.0.0.1:1414,4=TCP,5=Socket.connect]],3=localhost(1414),4=,5=RemoteTCPConnection.bindAndConnectSocket]
Container declaration:
#Container
static GenericContainer<?> mqContainer = new GenericContainer<>(DockerImageName.parse("ibmcom/mq"))
.withEnv("LICENSE", "accept")
.withEnv("MQ_QMGR_NAME", "QM1")
.withEnv("MQ_USER_NAME","admin")
.withCommand("--volume q1data:/mnt/mqm")
.withExposedPorts(1414);```
All the settings in yml file for queue look unrelated, cause there is no any port specific stuff:
ibm:
mq:
channel: DEV.APP.SVRCONN
queue-manager: QM1
user: admin
password: passw0rd
use-i-b-m-cipher-mappings: false
user-authentication-m-q-c-s-p: false
#ssl-cipher-spec: ECDHE_RSA_AES_128_CBC_SHA256
ssl.enabled: false
I asked TC framework supporters and they advised to set host and port for spring in dynamic properties, which seems legit. The only problem I cant find correct settings to use. Any suggestion?

Answer 1

From the tutorial here: https://developer.ibm.com/tutorials/mq-jms-application-development-with-spring-boot/, these could be the following property:
ibm.mq.connName=localhost(1414)
So your #DynamicPropertySource could be something like:
#DynamicPropertySource
static void registerMqProperties(DynamicPropertyRegistry registry) {
registry.add("ibm.mq.connName",
() -> String.format("%s(%d)",
mqContainer.getHost(),
mqContainer.getFirstMappedPort()));
}