description: "Replica set discovery"

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

phases: [

    # At first, a, b, and c are secondaries.
    {
        responses: [

                ["a:27017", {

                    ok: 1,
                    ismaster: false,
                    secondary: true,
                    setName: "rs",
                    hosts: ["a:27017", "b:27017", "c:27017"],
                    minWireVersion: 0,
                    maxWireVersion: 6
                }]
        ],

        outcome: {

            servers: {

                "a:27017": {

                    type: "RSSecondary",
                    setName: "rs"
                },

                "b:27017": {

                    type: "Unknown",
                    setName:
                },

                "c:27017": {

                    type: "Unknown",
                    setName:
                }
            },
            topologyType: "ReplicaSetNoPrimary",
            logicalSessionTimeoutMinutes: null,
            setName: "rs"
        }
    },

    # Admin removes a, adds a high-priority member d which becomes primary.
    {
        responses: [

                ["b:27017", {

                    ok: 1,
                    ismaster: false,
                    secondary: true,
                    setName: "rs",
                    primary: "d:27017",
                    hosts: ["b:27017", "c:27017", "d:27017"],
                    minWireVersion: 0,
                    maxWireVersion: 6
                }]
        ],

        outcome: {

            servers: {

                "a:27017": {

                    type: "RSSecondary",
                    setName: "rs"
                },

                "b:27017": {

                    type: "RSSecondary",
                    setName: "rs"
                },

                "c:27017": {

                    type: "Unknown",
                    setName:
                },

                "d:27017": {

                    type: "PossiblePrimary",
                    setName:
                }
            },
            topologyType: "ReplicaSetNoPrimary",
            logicalSessionTimeoutMinutes: null,
            setName: "rs"
        }
    },

    # Primary responds.
    {
        responses: [

                ["d:27017", {

                    ok: 1,
                    ismaster: true,
                    setName: "rs",
                    hosts: ["b:27017", "c:27017", "d:27017", "e:27017"],
                    minWireVersion: 0,
                    maxWireVersion: 6
                }]
        ],

        outcome: {

            # e is new.
            servers: {

                "b:27017": {

                    type: "RSSecondary",
                    setName: "rs"
                },

                "c:27017": {

                    type: "Unknown",
                    setName:
                },

                "d:27017": {

                    type: "RSPrimary",
                    setName: "rs"
                },

                "e:27017": {

                    type: "Unknown",
                    setName:
                }
            },
            topologyType: "ReplicaSetWithPrimary",
            logicalSessionTimeoutMinutes: null,
            setName: "rs"
        }
    },

    # Stale response from c.
    {
        responses: [

                ["c:27017", {

                    ok: 1,
                    ismaster: false,
                    secondary: true,
                    setName: "rs",
                    hosts: ["a:27017", "b:27017", "c:27017"],
                    minWireVersion: 0,
                    maxWireVersion: 6
                }]
        ],

        outcome: {

            # We don't add a back.
            # We don't remove e.
            servers: {

                "b:27017": {

                    type: "RSSecondary",
                    setName: "rs"
                },

                "c:27017": {

                    type: "RSSecondary",
                    setName: "rs"
                },

                "d:27017": {

                    type: "RSPrimary",
                    setName: "rs"
                },

                "e:27017": {

                    type: "Unknown",
                    setName:
                }
            },
            topologyType: "ReplicaSetWithPrimary",
            logicalSessionTimeoutMinutes: null,
            setName: "rs"
        }
    }
]