### Question:
TrackedQueryManager { public boolean hasActiveDefaultQuery(Path path) { return this.trackedQueryTree.rootMostValueMatching(path, HAS_ACTIVE_DEFAULT_PREDICATE) != null; } TrackedQueryManager(
      PersistenceStorageEngine storageLayer, LogWrapper logger, Clock clock); TrackedQuery findTrackedQuery(QuerySpec query); void removeTrackedQuery(QuerySpec query); void setQueryActive(QuerySpec query); void setQueryInactive(QuerySpec query); void setQueryCompleteIfExists(QuerySpec query); void setQueriesComplete(Path path); boolean isQueryComplete(QuerySpec query); PruneForest pruneOldQueries(CachePolicy cachePolicy); Set<ChildKey> getKnownCompleteChildren(Path path); void ensureCompleteTrackedQuery(Path path); boolean hasActiveDefaultQuery(Path path); long countOfPrunableQueries();  }### Answer:
@Test public void hasActiveDefaultQuery() { TrackedQueryManager manager = newManager(); manager.setQueryActive(SAMPLE_FOO_QUERY); manager.setQueryActive(DEFAULT_BAR_QUERY); assertFalse(manager.hasActiveDefaultQuery(path("foo"))); assertFalse(manager.hasActiveDefaultQuery(path(""))); assertTrue(manager.hasActiveDefaultQuery(path("bar"))); assertTrue(manager.hasActiveDefaultQuery(path("bar/baz"))); }