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commanded test aggregates support snapshot_aggregate.ex
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test/aggregates/support/snapshot_aggregate.ex

defmodule Commanded.Aggregates.SnapshotAggregate do
@moduledoc false
defstruct [
:name,
:date,
]
defmodule Commands do
defmodule Create, do: defstruct [:name, :date]
end
defmodule Events do
defmodule Created, do: defstruct [:name, :date]
end
alias Commanded.Aggregates.SnapshotAggregate
alias Commands.Create
alias Events.Created
def execute(
%SnapshotAggregate{name: nil},
%Create{name: name, date: date})
do
%Created{name: name, date: date}
end
# state mutatators
def apply(
%SnapshotAggregate{} = state,
%Created{name: name, date: date})
do
%SnapshotAggregate{state |
name: name,
date: date
}
end
end
alias Commanded.Aggregates.SnapshotAggregate
defimpl Commanded.Serialization.JsonDecoder, for: SnapshotAggregate do
@doc """
Parse the date included in the aggregate state
"""
def decode(%SnapshotAggregate{date: date} = state) do
%SnapshotAggregate{state |
date: NaiveDateTime.from_iso8601!(date)
}
end
end