Latest JabRef repository version on master 9daa645 compiled on Mac OS X 10.14.5.

Currently, it is not possible to run gradle build on a freshly cloned JabRef. The one major issue are errors of the following kind:

jabref/src/jmh/java/org/jabref/preferences/LastFocusedTabPreferencesTest.java:5: error: package org.junit.jupiter.api does not exist
import org.junit.jupiter.api.AfterAll;

This error has its origin in the build.gradle where the jupiter dependency is included with

testImplementation 'org.junit.jupiter:junit-jupiter:5.5.1'

However, the LastFocusedTabPreferencesTest.java does not live in the test directory. An easy fix is to use implementation instead of testImplementation.

Furthermore, for ages and on different machines I got this Gradle error

plug-in not found: ErrorProne

and @Siedlerchr confirmed that he also sees this error. I wonder why this package is used if obviously, its absence doesn't bother the built.

Finally, I got several two failing tests (after initializing the submodules):

RegExpBasedFileFinderTests. testAuthorWithDiacritics()
BibDatabaseTest. setStringAsCollectionWithUpdatedContentOverridesString()

I believe the aim should be that the master branch can be built without errors and all tests passing. This reduces confusion for possible new contributors, e.g. like this one.