in maven-plugin-testing-harness/src/main/java/org/apache/maven/plugin/testing/resources/TestResources.java [57:63]
protected void starting(Description d) {
String methodName = d.getMethodName();
if (methodName != null) {
methodName = methodName.replace('/', '_').replace('\\', '_');
}
name = d.getTestClass().getSimpleName() + "_" + methodName;
}