description: "Disconnected from primary, reject primary with stale electionId"

uri: "mongodb://a/?replicaSet=rs"

phases: [

    # A is elected, then B.
    {
        responses: [
            ["a:27017", {
                ok: 1,
                ismaster: true,
                hosts: ["a:27017", "b:27017"],
                setName: "rs",
                setVersion: 1,
                electionId: {"$oid": "000000000000000000000001"},
                minWireVersion: 0,
                maxWireVersion: 6
            }],
            ["b:27017", {
                ok: 1,
                ismaster: true,
                hosts: ["a:27017", "b:27017"],
                setName: "rs",
                setVersion: 1,
                electionId: {"$oid": "000000000000000000000002"},
                minWireVersion: 0,
                maxWireVersion: 6
            }]
        ],

        outcome: {
            servers: {
                "a:27017": {
                    type: "Unknown",
                    setName: ,
                    electionId:
                },
                "b:27017": {
                    type: "RSPrimary",
                    setName: "rs",
                    setVersion: 1,
                    electionId: {"$oid": "000000000000000000000002"}
                }
            },
            topologyType: "ReplicaSetWithPrimary",
            logicalSessionTimeoutMinutes: null,
            setName: "rs",
            maxSetVersion: 1,
            maxElectionId: {"$oid": "000000000000000000000002"},
        }
    },

    # Disconnected from B.
    {
        responses: [
            ["b:27017", {}]
        ],
        outcome: {
            servers: {
                "a:27017": {
                    type: "Unknown",
                    setName: ,
                    electionId:
                },
                "b:27017": {
                    type: "Unknown",
                    setName: ,
                    electionId:
                }
            },
            topologyType: "ReplicaSetNoPrimary",
            logicalSessionTimeoutMinutes: null,
            setName: "rs",
            maxSetVersion: 1,
            maxElectionId: {"$oid": "000000000000000000000002"},
        }
    },

    # A still claims to be primary but it's ignored.
    {
        responses: [
            ["a:27017", {
                ok: 1,
                ismaster: true,
                hosts: ["a:27017", "b:27017"],
                setName: "rs",
                setVersion: 1,
                electionId: {"$oid": "000000000000000000000001"},
                minWireVersion: 0,
                maxWireVersion: 6
            }]
        ],
        outcome: {
            servers: {
                "a:27017": {
                    type: "Unknown",
                    setName: ,
                    electionId:
                },
                "b:27017": {
                    type: "Unknown",
                    setName: ,
                    electionId:
                }
            },
            topologyType: "ReplicaSetNoPrimary",
            logicalSessionTimeoutMinutes: null,
            setName: "rs",
            maxSetVersion: 1,
            maxElectionId: {"$oid": "000000000000000000000002"},
        }
    },

    # Now A is re-elected.
    {
        responses: [
            ["a:27017", {
                ok: 1,
                ismaster: true,
                hosts: ["a:27017", "b:27017"],
                setName: "rs",
                setVersion: 1,
                electionId: {"$oid": "000000000000000000000003"},
                minWireVersion: 0,
                maxWireVersion: 6
            }]
        ],
        outcome: {
            servers: {
                "a:27017": {
                    type: "RSPrimary",
                    setName: "rs",
                    setVersion: 1,
                    electionId: {"$oid": "000000000000000000000003"}
                },
                "b:27017": {
                    type: "Unknown",
                    setName: ,
                    electionId:
                }
            },
            topologyType: "ReplicaSetWithPrimary",
            logicalSessionTimeoutMinutes: null,
            setName: "rs",
            maxSetVersion: 1,
            maxElectionId: {"$oid": "000000000000000000000003"},
        }
    },

    # B comes back as secondary.
    {
        responses: [
            ["b:27017", {
                ok: 1,
                ismaster: false,
                secondary: true,
                hosts: ["a:27017", "b:27017"],
                setName: "rs",
                minWireVersion: 0,
                maxWireVersion: 6
            }]
        ],
        outcome: {
            servers: {
                "a:27017": {
                    type: "RSPrimary",
                    setName: "rs",
                    setVersion: 1,
                    electionId: {"$oid": "000000000000000000000003"}
                },
                "b:27017": {
                    type: "RSSecondary",
                    setName: "rs"
                }
            },
            topologyType: "ReplicaSetWithPrimary",
            logicalSessionTimeoutMinutes: null,
            setName: "rs",
            maxSetVersion: 1,
            maxElectionId: {"$oid": "000000000000000000000003"},
        }
    }
]