Maven-surefire-plugin

It’ll be something like

apply plugin: 'java'

test {
  ignoreFailures = true
  useTestNG {
     suiteXmlFiles << file('src/test/resources/testng.xml') 
     listeners << 'org.testng.reporters.XMLReporter:generateTestResultAttributes=true,generateGroupsAttribute=true' 
  } 
} 

See TestNGOptions