(t *testing.T)
| 62 | } |
| 63 | |
| 64 | func TestCluster_PromoteNewMaster(t *testing.T) { |
| 65 | shard := NewShard() |
| 66 | shard.SlotRanges = []SlotRange{{Start: 0, Stop: 1023}} |
| 67 | |
| 68 | node0 := NewClusterMockNode() |
| 69 | node0.SetRole(RoleMaster) |
| 70 | |
| 71 | node1 := NewClusterMockNode() |
| 72 | node1.SetRole(RoleSlave) |
| 73 | node1.Sequence = 200 |
| 74 | |
| 75 | node2 := NewClusterMockNode() |
| 76 | node2.SetRole(RoleSlave) |
| 77 | node2.Sequence = 100 |
| 78 | |
| 79 | node3 := NewClusterMockNode() |
| 80 | node3.SetRole(RoleSlave) |
| 81 | node3.Sequence = 300 |
| 82 | |
| 83 | shard.Nodes = []Node{node0} |
| 84 | cluster := &Cluster{ |
| 85 | Shards: Shards{shard}, |
| 86 | } |
| 87 | |
| 88 | ctx := context.Background() |
| 89 | _, err := cluster.PromoteNewMaster(ctx, -1, node0.ID(), "") |
| 90 | require.ErrorIs(t, err, consts.ErrIndexOutOfRange) |
| 91 | _, err = cluster.PromoteNewMaster(ctx, 1, node0.ID(), "") |
| 92 | require.ErrorIs(t, err, consts.ErrIndexOutOfRange) |
| 93 | _, err = cluster.PromoteNewMaster(ctx, 0, node0.ID(), "") |
| 94 | require.ErrorIs(t, err, consts.ErrShardNoReplica) |
| 95 | |
| 96 | shard.Nodes = append(shard.Nodes, node1, node2, node3) |
| 97 | _, err = cluster.PromoteNewMaster(ctx, 0, node1.ID(), "") |
| 98 | require.ErrorIs(t, err, consts.ErrNodeIsNotMaster) |
| 99 | |
| 100 | newMasterID, err := cluster.PromoteNewMaster(ctx, 0, node0.ID(), "") |
| 101 | require.NoError(t, err) |
| 102 | require.Equal(t, node3.ID(), newMasterID) |
| 103 | |
| 104 | // test preferredNodeID |
| 105 | newMasterID, err = cluster.PromoteNewMaster(ctx, 0, node3.ID(), node2.ID()) |
| 106 | require.NoError(t, err) |
| 107 | require.Equal(t, node2.ID(), newMasterID) |
| 108 | } |
nothing calls this directly
no test coverage detected