IllegalArgumentException when creating test data with zero contacts
java.lang.IllegalArgumentException: n <= 0: 0
at java.util.Random.nextInt(Random.java:182)
at org.briarproject.briar.test.TestDataCreatorImpl.createBlogPosts(TestDataCreatorImpl.java:315)
at org.briarproject.briar.test.TestDataCreatorImpl.createTestDataOnIoExecutor(TestDataCreatorImpl.java:135)
at org.briarproject.briar.test.TestDataCreatorImpl.lambda$createTestData$0$TestDataCreatorImpl(TestDataCreatorImpl.java:120)
at org.briarproject.briar.test.TestDataCreatorImpl$$Lambda$0.run(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1112)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:587)
at java.lang.Thread.run(Thread.java:818)