### Question:
EvolutionContextImpl implements EvolutionContext { @Override public List<Evolution> getVersions() { return versions; } EvolutionContextImpl(Resource resource, EvolutionConfig config); @Override List<Evolution> getEvolutionItems(); @Override List<Evolution> getVersions();  }### Answer:
@Test public void getVersions() { assertEquals(2, evolutionContext.getVersions().size()); }