@Test
public void testFlipMemberVotingStatesWithNoInitialLeader() throws Exception {

    String name = "testFlipMemberVotingStatesWithNoInitialLeader";
    // Members 1, 2, and 3 are initially started up as non-voting. Members 4, 5, and 6 are initially
    // non-voting and simulated as down by not starting them up.
    ServerConfigurationPayload persistedServerConfig = new ServerConfigurationPayload(Arrays.asList(
            new ServerInfo("member-1", false), new ServerInfo("member-2", false),
            new ServerInfo("member-3", false), new ServerInfo("member-4", true),
            new ServerInfo("member-5", true), new ServerInfo("member-6", true)));
    setupPersistedServerConfigPayload(persistedServerConfig, "member-1", name, "cars", "people");
    setupPersistedServerConfigPayload(persistedServerConfig, "member-2", name, "cars", "people");
    setupPersistedServerConfigPayload(persistedServerConfig, "member-3", name, "cars", "people");
    String moduleShardsConfig = "module-shards-member1-and-2-and-3.conf";
    final MemberNode replicaNode1 = MemberNode.builder(memberNodes).akkaConfig("Member1").testName(name)
            .moduleShardsConfig(moduleShardsConfig).datastoreContextBuilder(
                    DatastoreContext.newBuilder().shardHeartbeatIntervalInMillis(300).shardElectionTimeoutFactor(1))
            .build();
    final MemberNode replicaNode2 = MemberNode.builder(memberNodes).akkaConfig("Member2").testName(name)
            .moduleShardsConfig(moduleShardsConfig).build();
    final MemberNode replicaNode3 = MemberNode.builder(memberNodes).akkaConfig("Member3").testName(name)
            .moduleShardsConfig(moduleShardsConfig).build();
    // Initially there won't be a leader b/c all the up nodes are non-voting.
    replicaNode1.waitForMembersUp("member-2", "member-3");
    verifyVotingStates(replicaNode1.configDataStore(), "cars", new SimpleEntry<>("member-1", FALSE),
            new SimpleEntry<>("member-2", FALSE), new SimpleEntry<>("member-3", FALSE),
            new SimpleEntry<>("member-4", TRUE), new SimpleEntry<>("member-5", TRUE),
            new SimpleEntry<>("member-6", TRUE));
    verifyRaftState(replicaNode1.configDataStore(), "cars", raftState ->
        assertEquals("Expected raft state", RaftState.Follower.toString(), raftState.getRaftState()));
    ClusterAdminRpcService service1 = new ClusterAdminRpcService(replicaNode1.configDataStore(),
            replicaNode1.operDataStore(), null);
    RpcResult<FlipMemberVotingStatesForAllShardsOutput> rpcResult = service1.flipMemberVotingStatesForAllShards(
        new FlipMemberVotingStatesForAllShardsInputBuilder().build()).get(10, TimeUnit.SECONDS);
    FlipMemberVotingStatesForAllShardsOutput result = verifySuccessfulRpcResult(rpcResult);
    verifyShardResults(result.getShardResult(), successShardResult("cars", DataStoreType.Config),
            successShardResult("people", DataStoreType.Config),
            successShardResult("cars", DataStoreType.Operational),
            successShardResult("people", DataStoreType.Operational));
    verifyVotingStates(new AbstractDataStore[]{replicaNode1.configDataStore(), replicaNode1.operDataStore(),
            replicaNode2.configDataStore(), replicaNode2.operDataStore(),
            replicaNode3.configDataStore(), replicaNode3.operDataStore()},
            new String[]{"cars", "people"},
            new SimpleEntry<>("member-1", TRUE), new SimpleEntry<>("member-2", TRUE),
            new SimpleEntry<>("member-3", TRUE), new SimpleEntry<>("member-4", FALSE),
            new SimpleEntry<>("member-5", FALSE), new SimpleEntry<>("member-6", FALSE));
    // Since member 1 was changed to voting and there was no leader, it should've started and election
    // and become leader
    verifyRaftState(replicaNode1.configDataStore(), "cars", raftState -> {
        assertNotNull("Expected non-null leader Id", raftState.getLeader());
        assertTrue("Expected leader member-1. Actual: " + raftState.getLeader(),
                raftState.getLeader().contains("member-1"));
    });
    verifyRaftState(replicaNode1.operDataStore(), "cars", raftState -> {
        assertNotNull("Expected non-null leader Id", raftState.getLeader());
        assertTrue("Expected leader member-1. Actual: " + raftState.getLeader(),
                raftState.getLeader().contains("member-1"));
    });
}