Test Extended Architecture (XA) connection

Provides coverage for https://issues.redhat.com/browse/QUARKUS-2742

pom.xml

@@ -226,6 +226,8 @@
                                 <ts.global.s2i.quarkus.native.builder.image>${ts.global.s2i.quarkus.native.builder.image}</ts.global.s2i.quarkus.native.builder.image>
                                 <!-- Services used in test suite -->
                                 <postgresql.latest.image>${postgresql.latest.image}</postgresql.latest.image>
+                                <!-- FIXME: if the same image name is used in two test classes, the second one fails -->
+                                <postgresql.also.latest.image>docker.io/library/postgres:15.1</postgresql.also.latest.image>
                                 <!-- TODO: investigate further in https://github.com/quarkus-qe/quarkus-test-suite/issues/627 -->
                                 <elastic.71.image>docker.io/bitnami/elasticsearch:7.17.6</elastic.71.image>
                                 <!--TODO change into 5.7 when this fixed https://github.com/docker-library/mysql/issues/844 -->

sql-db/sql-app/src/test/java/io/quarkus/ts/sqldb/sqlapp/XAPostgresIT.java

@@ -0,0 +1,26 @@
+package io.quarkus.ts.sqldb.sqlapp;
+
+import io.quarkus.test.bootstrap.PostgresqlService;
+import io.quarkus.test.bootstrap.RestService;
+import io.quarkus.test.scenarios.QuarkusScenario;
+import io.quarkus.test.services.Container;
+import io.quarkus.test.services.QuarkusApplication;
+
+@QuarkusScenario
+public class XAPostgresIT extends AbstractSqlDatabaseIT {
+
+    static final int POSTGRESQL_PORT = 5432;
+
+    @Container(image = "${postgresql.also.latest.image}", port = POSTGRESQL_PORT, expectedLog = "listening on IPv4 address")
+    static PostgresqlService database = new PostgresqlService()
+            .withUser("user")
+            .withPassword("user")
+            .withDatabase("mydb");
+
+    @QuarkusApplication
+    static RestService app = new RestService().withProperties("postgresql.properties")
+            .withProperty("quarkus.datasource.username", database.getUser())
+            .withProperty("quarkus.datasource.password", database.getPassword())
+            .withProperty("quarkus.datasource.jdbc.transactions", "xa")
+            .withProperty("quarkus.datasource.jdbc.url", database::getJdbcUrl);
+}