Berkeley test failing: testConsistencyEnforcement

[FlorianHockmann]

This test is failing in #4135 which simply updates JUnit. However, this test already seems to fail on master, but for some reason it isn't executed there. I've noticed that IntelliJ complains about this test: Old style JUnit test method 'testConsistencyEnforcement()' in JUnit 4 class and its suggested fix simply adds the @Test annotation to it. If I follow that suggestion and add the annotation, then the test is also executed on master and fails there.

So, it seems the JUnit update in #4135 just changes how JUnit discovers the tests which seems to include this test now. I suggest that we exclude the test now explicitly in #4135 so it doesn't stop us from updating JUnit and because this test has effectively been disabled for a long time already, but we should of course still look into it to find out why it is actually failing.

Stack Trace (if you have one)

[ERROR] Tests run: 203, Failures: 0, Errors: 1, Skipped: 1, Time elapsed: 258.789 s <<< FAILURE! - in org.janusgraph.graphdb.berkeleyje.BerkeleyGraphTest
[ERROR] org.janusgraph.graphdb.berkeleyje.BerkeleyGraphTest.testConsistencyEnforcement  Time elapsed: 0.196 s  <<< ERROR!
java.lang.NullPointerException
        at org.janusgraph.diskstorage.configuration.ConfigOption.getEnumValue(ConfigOption.java:243)
        at org.janusgraph.graphdb.berkeleyje.BerkeleyGraphTest.testConsistencyEnforcement(BerkeleyGraphTest.java:94)
        at java.base/java.lang.reflect.Method.invoke(Method.java:566)
        at java.base/java.util.ArrayList.forEach(ArrayList.java:1541)
        at java.base/java.util.ArrayList.forEach(ArrayList.java:1541)