ksql-test-runner fails loading hamcrest and other testing jars

[spena]

When executing the ksql-test-runner from a packaged confluent installation, the following error is thrown:

$ ./ksql-test-runner -s /tmp/statements.sql -i /tmp/input.json -o /tmp/output.json

...
Caused by: java.lang.ClassNotFoundException: org.hamcrest.Matcher
    at java.net.URLClassLoader.findClass(URLClassLoader.java:382)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:349)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:357)

The reason is because the following jars are not packaged in KSQL:

ksql-functional-tests/hamcrest-all-1.3.jar
ksql-functional-tests/junit-4.12.jar

In 5.3.1, the kafka-clients-5.3.1-css is not found either:

ksql-functional-tests/kafka-clients-5.3.2-ccs-20190919.011153-4-test.jar

Workaround
The workaround is to copy the required jars into the confluent/ksql classpath. For instance, being /opt/confluent/confluent-5.3.1/share/java/ksql the classpath:

$ cd /opt/confluent/confluent-5.3.1/share/java/ksql
$ wget https://repo1.maven.org/maven2/junit/junit/4.12/junit-4.12.jar
$ wget https://repo1.maven.org/maven2/org/hamcrest/hamcrest-all/1.3/hamcrest-all-1.3.jar

This bug is found since the 5.3.x branch.

[big-andy-coates]

I've marked this as a blocker for 5.4, which strictly speaking it isn't as its already broken in 5.3. But we should really get the testing tool into a usable state for this release.

[holgerbrandl]

Is there any workaround until the fix? E.g using some pre-release automatically built containerized version of the ksql-test-runner?

[holgerbrandl]

Since 0.7 seems still quite far away, I still wonder about a workaround? E.g. by patching the class-path or similar.