{
  "description": "db-aggregate-write-readPreference",
  "schemaVersion": "1.4",
  "runOnRequirements": [
    {
      "minServerVersion": "3.6",
      "topologies": [
        "replicaset"
      ],
      "serverless": "forbid"
    }
  ],
  "_yamlAnchors": {
    "readConcern": {
      "level": "local"
    },
    "writeConcern": {
      "w": 1
    }
  },
  "createEntities": [
    {
      "client": {
        "id": "client0",
        "observeEvents": [
          "commandStartedEvent"
        ],
        "uriOptions": {
          "readConcernLevel": "local",
          "w": 1
        }
      }
    },
    {
      "database": {
        "id": "database0",
        "client": "client0",
        "databaseName": "db0",
        "databaseOptions": {
          "readPreference": {
            "mode": "secondaryPreferred",
            "maxStalenessSeconds": 600
          }
        }
      }
    },
    {
      "collection": {
        "id": "collection0",
        "database": "database0",
        "collectionName": "coll0"
      }
    }
  ],
  "initialData": [
    {
      "collectionName": "coll0",
      "databaseName": "db0",
      "documents": []
    }
  ],
  "tests": [
    {
      "description": "Database-level aggregate with $out includes read preference for 5.0+ server",
      "runOnRequirements": [
        {
          "minServerVersion": "5.0",
          "serverless": "forbid"
        }
      ],
      "operations": [
        {
          "object": "database0",
          "name": "aggregate",
          "arguments": {
            "pipeline": [
              {
                "$listLocalSessions": {}
              },
              {
                "$limit": 1
              },
              {
                "$addFields": {
                  "_id": 1
                }
              },
              {
                "$project": {
                  "_id": 1
                }
              },
              {
                "$out": "coll0"
              }
            ]
          }
        }
      ],
      "expectEvents": [
        {
          "client": "client0",
          "events": [
            {
              "commandStartedEvent": {
                "command": {
                  "aggregate": 1,
                  "pipeline": [
                    {
                      "$listLocalSessions": {}
                    },
                    {
                      "$limit": 1
                    },
                    {
                      "$addFields": {
                        "_id": 1
                      }
                    },
                    {
                      "$project": {
                        "_id": 1
                      }
                    },
                    {
                      "$out": "coll0"
                    }
                  ],
                  "$readPreference": {
                    "mode": "secondaryPreferred",
                    "maxStalenessSeconds": 600
                  },
                  "readConcern": {
                    "level": "local"
                  },
                  "writeConcern": {
                    "w": 1
                  }
                }
              }
            }
          ]
        }
      ],
      "outcome": [
        {
          "collectionName": "coll0",
          "databaseName": "db0",
          "documents": [
            {
              "_id": 1
            }
          ]
        }
      ]
    },
    {
      "description": "Database-level aggregate with $out omits read preference for pre-5.0 server",
      "runOnRequirements": [
        {
          "minServerVersion": "4.2",
          "maxServerVersion": "4.4.99",
          "serverless": "forbid"
        }
      ],
      "operations": [
        {
          "object": "database0",
          "name": "aggregate",
          "arguments": {
            "pipeline": [
              {
                "$listLocalSessions": {}
              },
              {
                "$limit": 1
              },
              {
                "$addFields": {
                  "_id": 1
                }
              },
              {
                "$project": {
                  "_id": 1
                }
              },
              {
                "$out": "coll0"
              }
            ]
          }
        }
      ],
      "expectEvents": [
        {
          "client": "client0",
          "events": [
            {
              "commandStartedEvent": {
                "command": {
                  "aggregate": 1,
                  "pipeline": [
                    {
                      "$listLocalSessions": {}
                    },
                    {
                      "$limit": 1
                    },
                    {
                      "$addFields": {
                        "_id": 1
                      }
                    },
                    {
                      "$project": {
                        "_id": 1
                      }
                    },
                    {
                      "$out": "coll0"
                    }
                  ],
                  "$readPreference": {
                    "$$exists": false
                  },
                  "readConcern": {
                    "level": "local"
                  },
                  "writeConcern": {
                    "w": 1
                  }
                }
              }
            }
          ]
        }
      ],
      "outcome": [
        {
          "collectionName": "coll0",
          "databaseName": "db0",
          "documents": [
            {
              "_id": 1
            }
          ]
        }
      ]
    },
    {
      "description": "Database-level aggregate with $merge includes read preference for 5.0+ server",
      "runOnRequirements": [
        {
          "minServerVersion": "5.0"
        }
      ],
      "operations": [
        {
          "object": "database0",
          "name": "aggregate",
          "arguments": {
            "pipeline": [
              {
                "$listLocalSessions": {}
              },
              {
                "$limit": 1
              },
              {
                "$addFields": {
                  "_id": 1
                }
              },
              {
                "$project": {
                  "_id": 1
                }
              },
              {
                "$merge": {
                  "into": "coll0"
                }
              }
            ]
          }
        }
      ],
      "expectEvents": [
        {
          "client": "client0",
          "events": [
            {
              "commandStartedEvent": {
                "command": {
                  "aggregate": 1,
                  "pipeline": [
                    {
                      "$listLocalSessions": {}
                    },
                    {
                      "$limit": 1
                    },
                    {
                      "$addFields": {
                        "_id": 1
                      }
                    },
                    {
                      "$project": {
                        "_id": 1
                      }
                    },
                    {
                      "$merge": {
                        "into": "coll0"
                      }
                    }
                  ],
                  "$readPreference": {
                    "mode": "secondaryPreferred",
                    "maxStalenessSeconds": 600
                  },
                  "readConcern": {
                    "level": "local"
                  },
                  "writeConcern": {
                    "w": 1
                  }
                }
              }
            }
          ]
        }
      ],
      "outcome": [
        {
          "collectionName": "coll0",
          "databaseName": "db0",
          "documents": [
            {
              "_id": 1
            }
          ]
        }
      ]
    },
    {
      "description": "Database-level aggregate with $merge omits read preference for pre-5.0 server",
      "runOnRequirements": [
        {
          "minServerVersion": "4.2",
          "maxServerVersion": "4.4.99"
        }
      ],
      "operations": [
        {
          "object": "database0",
          "name": "aggregate",
          "arguments": {
            "pipeline": [
              {
                "$listLocalSessions": {}
              },
              {
                "$limit": 1
              },
              {
                "$addFields": {
                  "_id": 1
                }
              },
              {
                "$project": {
                  "_id": 1
                }
              },
              {
                "$merge": {
                  "into": "coll0"
                }
              }
            ]
          }
        }
      ],
      "expectEvents": [
        {
          "client": "client0",
          "events": [
            {
              "commandStartedEvent": {
                "command": {
                  "aggregate": 1,
                  "pipeline": [
                    {
                      "$listLocalSessions": {}
                    },
                    {
                      "$limit": 1
                    },
                    {
                      "$addFields": {
                        "_id": 1
                      }
                    },
                    {
                      "$project": {
                        "_id": 1
                      }
                    },
                    {
                      "$merge": {
                        "into": "coll0"
                      }
                    }
                  ],
                  "$readPreference": {
                    "$$exists": false
                  },
                  "readConcern": {
                    "level": "local"
                  },
                  "writeConcern": {
                    "w": 1
                  }
                }
              }
            }
          ]
        }
      ],
      "outcome": [
        {
          "collectionName": "coll0",
          "databaseName": "db0",
          "documents": [
            {
              "_id": 1
            }
          ]
        }
      ]
    }
  ]
}