ObjectId parentId1 = ObjectId.forString("fake parent content 1");
ObjectId parentId2 = ObjectId.forString("fake parent content 2");
List<ObjectId> parentIds = ImmutableList.of(parentId1, parentId2);
b.setParentIds(parentIds);
RevCommit build = b.build();
assertNotNull(build.getId());
assertFalse(build.getId().isNull());
assertEquals(treeId, build.getTreeId());
assertEquals(parentIds, build.getParentIds());
assertEquals("groldan", build.getAuthor().getName().get());