org.infinispan.test.integration.as.query.ElasticsearchIndexManagerIT fails due to NoClassDefFoundError

java.lang.NoClassDefFoundError: org/testng/Assert
at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
at org.infinispan.query.test.elasticsearch.ElasticSearchCluster.waitForGreen(ElasticSearchCluster.java:151)
at org.infinispan.query.test.elasticsearch.ElasticSearchCluster.lambda$start$0(ElasticSearchCluster.java:135)
at java.util.ArrayList.forEach(ArrayList.java:1249)
at org.infinispan.query.test.elasticsearch.ElasticSearchCluster.start(ElasticSearchCluster.java:135)
at org.infinispan.test.integration.as.query.ElasticsearchIndexManagerIT.startElastic(ElasticsearchIndexManagerIT.java:69)