Github user peter-gergely-horvath commented on the issue:
https://github.com/apache/nifi/pull/2872
Hi @MikeThomsen I _intentionally_ have no test configuration in the project
(at least for now): they are merely *samples* of what can be done, but they
should not be executed as part of the core NiFi build.
NiFi is a beast, starting and stopping it takes some time, I do not want to
add that to the each NiFi build.
Please create a new Maven project quickstart project (that will have
testing configuration enabled) and add the following (replacing `${nifi
version}` with the current one) to the dependencies:
```
<dependency>
<groupId>org.apache.nifi:</groupId>
<artifactId>nifi-testharness</artifactId>
<version>${nifi version}</version>
</dependency>
```
once done, you can take the samples into your own project, where you can
experiment with the test harness.
I understand piggybacking on the tests directory is maybe not the perfect
place to deliver samples, but given the circumstances I think it is acceptable
and could maybe be improved in the future.
---
