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896 lines
23 KiB
Elixir
896 lines
23 KiB
Elixir
defmodule Ash.Test.CalculationTest do
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@moduledoc false
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use ExUnit.Case, async: true
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require Ash.Query
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defmodule FriendLink do
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use Ash.Resource,
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data_layer: Ash.DataLayer.Ets
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ets do
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private?(true)
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end
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actions do
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defaults([:create, :read, :update, :destroy])
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end
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relationships do
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belongs_to :source, Ash.Test.CalculationTest.User do
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allow_nil?(false)
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primary_key?(true)
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end
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belongs_to :target, Ash.Test.CalculationTest.User do
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allow_nil?(false)
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primary_key?(true)
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end
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end
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end
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defmodule FullNameWithSelect do
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use Ash.Calculation
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def select(_, _, _) do
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[:first_name, :last_name]
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end
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def calculate(records, _, _) do
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Enum.map(records, fn record ->
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"#{record.first_name} #{record.last_name}"
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end)
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end
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end
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defmodule Concat do
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# An example concatenation calculation, that accepts the delimiter as an argument
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use Ash.Calculation
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def init(opts) do
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if opts[:keys] && is_list(opts[:keys]) && Enum.all?(opts[:keys], &is_atom/1) do
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{:ok, opts}
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else
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{:error, "Expected a `keys` option for which keys to concat"}
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end
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end
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def calculate(records, opts, %{separator: separator}) do
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Enum.map(records, fn record ->
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Enum.map_join(opts[:keys], separator, fn key ->
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to_string(Map.get(record, key))
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end)
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end)
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end
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end
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defmodule NameWithUsersName do
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# Don't do this kind of thing in real life
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use Ash.Calculation
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def load(_, _, _) do
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[:full_name]
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end
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def calculate(records, _opts, %{actor: actor}) do
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Enum.map(records, fn record ->
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record.full_name <> " " <> actor.first_name <> " " <> actor.last_name
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end)
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end
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end
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defmodule ConcatWithLoad do
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# An example concatenation calculation, that accepts the delimiter as an argument
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use Ash.Calculation
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def init(opts) do
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if opts[:keys] && is_list(opts[:keys]) && Enum.all?(opts[:keys], &is_atom/1) do
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{:ok, opts}
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else
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{:error, "Expected a `keys` option for which keys to concat"}
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end
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end
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def load(_query, opts, _) do
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opts[:keys]
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end
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def select(_query, opts, _) do
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opts[:keys]
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end
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def calculate(records, opts, _) do
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Enum.map(records, fn record ->
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Enum.map_join(opts[:keys], " ", fn key ->
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to_string(Map.get(record, key))
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end)
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end)
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end
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end
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defmodule BestFriendsName do
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use Ash.Calculation
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def load(_query, _opts, _) do
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[best_friend: :full_name]
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end
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def calculate(records, _opts, _) do
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Enum.map(records, fn record ->
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record.best_friend && record.best_friend.full_name
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end)
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end
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end
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defmodule NamesOfBestFriendsOfMe do
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use Ash.Calculation
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def load(_query, _opts, args) do
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if args[:only_special] do
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query =
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Ash.Test.CalculationTest.User
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|> Ash.Query.filter(special == true)
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|> Ash.Query.load(:full_name)
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[best_friends_of_me: query]
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else
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[best_friends_of_me: :full_name]
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end
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end
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def calculate(records, _opts, _) do
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Enum.map(records, fn record ->
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record.best_friends_of_me
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|> Enum.map(& &1.full_name)
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|> Enum.sort()
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|> Enum.join(" - ")
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end)
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end
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end
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defmodule BestFriendsFirstNamePlusStuff do
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use Ash.Calculation
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def load(_query, _opts, _) do
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[:best_friends_first_name]
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end
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def calculate(records, _opts, _) do
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Enum.map(records, fn record ->
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record.best_friends_first_name && record.best_friends_first_name <> " stuff"
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end)
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end
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end
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defmodule BestFriendsBestFriendsFirstName do
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use Ash.Calculation
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def load(_query, _opts, _) do
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[best_friend: :best_friends_first_name]
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end
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def calculate(records, _opts, _) do
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Enum.map(records, fn record ->
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"bf: #{record.best_friend && record.best_friend.best_friends_first_name}"
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end)
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end
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end
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defmodule FullNamePlusFirstName do
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use Ash.Calculation
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def load(_, _, _) do
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[:full_name_with_select]
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end
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def select(_, _, _) do
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[:first_name]
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end
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def calculate(records, _, _) do
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Enum.map(records, fn record ->
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record.full_name_with_select <> " #{record.first_name}"
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end)
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end
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end
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defmodule FriendsNames do
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use Ash.Calculation
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def load(_query, _opts, _) do
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[
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friends:
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Ash.Test.CalculationTest.User
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|> Ash.Query.load([:full_name, :prefix])
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|> Ash.Query.limit(5)
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]
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end
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def calculate(records, _opts, _) do
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Enum.map(records, fn record ->
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record.friends
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|> Enum.map_join(" | ", fn friend ->
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if friend.prefix do
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friend.prefix <> " " <> friend.full_name
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else
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friend.full_name
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end
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end)
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end)
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end
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end
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defmodule Role do
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use Ash.Resource, data_layer: Ash.DataLayer.Ets
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actions do
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defaults([:create, :read, :update, :destroy])
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end
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ets do
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private?(true)
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end
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aggregates do
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first :user_is_active, :user, :is_active do
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default(false)
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end
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end
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attributes do
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uuid_primary_key(:id)
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attribute(:name, :string)
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attribute :is_active, :boolean do
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allow_nil?(false)
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default(false)
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end
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end
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calculations do
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calculate :active, :boolean do
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calculation(expr(is_active && user_is_active))
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load([:user_is_active])
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end
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calculate :user_is_active_with_calc, :boolean, expr(user.is_active || false)
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end
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relationships do
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belongs_to(:user, Ash.Test.CalculationTest.User)
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end
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end
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defmodule User do
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@moduledoc false
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use Ash.Resource, data_layer: Ash.DataLayer.Ets
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ets do
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private?(true)
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end
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actions do
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defaults([:create, :read, :update, :destroy])
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read :paginated do
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pagination do
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keyset?(true)
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default_limit(10)
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end
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end
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end
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attributes do
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uuid_primary_key(:id)
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attribute(:first_name, :string)
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attribute(:last_name, :string)
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attribute(:prefix, :string)
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attribute(:special, :boolean)
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attribute(:is_active, :boolean)
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end
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calculations do
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calculate(:active, :boolean, expr(is_active))
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calculate :full_name, :string, {Concat, keys: [:first_name, :last_name]} do
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select([:first_name, :last_name])
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# We currently need to use the [allow_empty?: true, trim?: false] constraints here.
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# As it's an empty string, the separator would otherwise be trimmed and set to `nil`.
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argument(:separator, :string,
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default: " ",
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constraints: [allow_empty?: true, trim?: false]
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)
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end
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calculate :full_name_with_select, :string, FullNameWithSelect do
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# We currently need to use the [allow_empty?: true, trim?: false] constraints here.
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# As it's an empty string, the separator would otherwise be trimmed and set to `nil`.
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argument(:separator, :string,
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default: " ",
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constraints: [allow_empty?: true, trim?: false]
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)
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end
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calculate(:best_friends_best_friends_first_name, :string, BestFriendsBestFriendsFirstName)
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calculate(
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:best_friends_first_name_plus_stuff,
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:string,
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BestFriendsFirstNamePlusStuff
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)
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calculate(:full_name_plus_first_name, :string, FullNamePlusFirstName)
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calculate(
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:full_name_plus_full_name,
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:string,
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{ConcatWithLoad, keys: [:full_name, :full_name]}
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)
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calculate(
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:full_name_plus_full_name_plus_full_name,
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:string,
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{ConcatWithLoad, keys: [:full_name, :full_name_plus_full_name]}
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)
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calculate(:slug, :string, expr(full_name <> "123"))
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calculate(:friends_names, :string, FriendsNames)
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calculate(:expr_full_name, :string, expr(first_name <> " " <> last_name))
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calculate(
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:string_join_full_name,
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:string,
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expr(string_join([first_name, last_name], " "))
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)
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calculate(:best_friends_name, :string, BestFriendsName)
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calculate :names_of_best_friends_of_me, :string, NamesOfBestFriendsOfMe do
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argument(:only_special, :boolean, default: false)
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end
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calculate(:name_with_users_name, :string, NameWithUsersName)
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calculate :full_name_with_salutation,
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:string,
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expr(^arg(:salutation) <> " " <> conditional_full_name) do
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argument(:salutation, :string, allow_nil?: false)
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load([:conditional_full_name])
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end
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calculate(
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:conditional_full_name,
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:string,
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expr(
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if(
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not is_nil(first_name) and not is_nil(last_name),
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first_name <> " " <> last_name,
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"(none)"
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)
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)
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)
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calculate(
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:conditional_full_name_block,
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:string,
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expr(
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if not is_nil(first_name) and not is_nil(last_name) do
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first_name <> " " <> last_name
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else
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"(none)"
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end
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)
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)
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calculate(
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:conditional_full_name_cond,
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:string,
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expr(
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cond do
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not is_nil(first_name) and not is_nil(last_name) ->
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first_name <> " " <> last_name
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not is_nil(first_name) ->
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first_name
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true ->
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"(none)"
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end
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)
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)
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end
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aggregates do
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first(:best_friends_first_name, :best_friend, :first_name)
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end
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relationships do
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belongs_to(:best_friend, __MODULE__)
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has_many :best_friends_of_me, __MODULE__ do
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destination_attribute(:best_friend_id)
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end
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has_many(:role, Ash.Test.CalculationTest.Role)
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many_to_many :friends, __MODULE__ do
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through(FriendLink)
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destination_attribute_on_join_resource(:target_id)
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source_attribute_on_join_resource(:source_id)
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end
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end
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end
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defmodule ActorActive do
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use Ash.Calculation
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def load(_, _, _) do
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[user: [:active], role: [:active]]
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end
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def calculate(records, _, _) do
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Enum.map(records, fn actor ->
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if actor.role do
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actor.role.active
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else
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actor.user.active
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end
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end)
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end
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end
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defmodule Actor do
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use Ash.Resource,
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data_layer: Ash.DataLayer.Ets
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actions do
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defaults([:create, :read, :update, :destroy])
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end
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ets do
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private?(true)
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end
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attributes do
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uuid_primary_key(:id)
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end
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calculations do
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calculate(:active, :boolean, ActorActive)
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end
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relationships do
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belongs_to :user, User do
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attribute_writable?(true)
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end
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belongs_to :role, Role do
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attribute_writable?(true)
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end
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end
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end
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defmodule Api do
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@moduledoc false
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use Ash.Api
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resources do
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resource(User)
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resource(FriendLink)
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resource(Role)
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resource(Actor)
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end
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end
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setup do
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user1 =
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User
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|> Ash.Changeset.new(%{first_name: "zach", last_name: "daniel"})
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|> Api.create!()
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admin_role =
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Role
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|> Ash.Changeset.for_create(:create, %{name: "admin"})
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|> Api.create!()
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normie_role =
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Role
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|> Ash.Changeset.for_create(:create, %{name: "normie"})
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|> Api.create!()
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Actor
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|> Ash.Changeset.for_create(:create, %{user_id: user1.id, role_id: admin_role.id})
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|> Api.create!()
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user2 =
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User
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|> Ash.Changeset.new(%{first_name: "brian", last_name: "cranston"})
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|> Ash.Changeset.manage_relationship(:best_friend, user1, type: :append_and_remove)
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|> Ash.Changeset.manage_relationship(:friends, user1, type: :append_and_remove)
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|> Api.create!()
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Actor
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|> Ash.Changeset.for_create(:create, %{user_id: user2.id, role_id: normie_role.id})
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|> Api.create!()
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%{user1: user1, user2: user2}
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end
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test "calculations can refer to `to_one` relationships in filters" do
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Role
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|> Ash.Query.filter(user_is_active_with_calc == true)
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|> Api.read!()
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end
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test "it uses default arguments" do
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full_names =
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User
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|> Ash.Query.load(:full_name)
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|> Api.read!()
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|> Enum.map(& &1.full_name)
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|> Enum.sort()
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assert full_names == ["brian cranston", "zach daniel"]
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end
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test "loads dependencies", %{user1: user} do
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assert %{slug: "zach daniel123"} = Api.load!(user, [:slug])
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end
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test "calculations can access the actor", %{user1: user1, user2: user2} do
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assert %{
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name_with_users_name: "zach daniel brian cranston"
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} =
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user1
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|> Api.load!(:name_with_users_name, actor: user2)
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end
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test "it loads anything specified by the load callback" do
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full_names =
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User
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|> Ash.Query.load(:full_name_plus_full_name)
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|> Api.read!()
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|> Enum.map(& &1.full_name_plus_full_name)
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|> Enum.sort()
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assert full_names == ["brian cranston brian cranston", "zach daniel zach daniel"]
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end
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test "it loads anything specified by the load callback, even when nested" do
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full_names =
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User
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|> Ash.Query.load(:full_name_plus_full_name_plus_full_name)
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|> Api.read!()
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|> Enum.map(& &1.full_name_plus_full_name_plus_full_name)
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|> Enum.sort()
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assert full_names == [
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"brian cranston brian cranston brian cranston",
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"zach daniel zach daniel zach daniel"
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]
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end
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test "it reloads anything specified by the load callback if its already been loaded when using `lazy?: false`" do
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full_names =
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User
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|> Ash.Query.load([:full_name, :full_name_plus_full_name])
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|> Api.read!()
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|> Enum.map(&%{&1 | full_name: &1.full_name <> " more"})
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|> Api.load!(:full_name_plus_full_name)
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|> Enum.map(& &1.full_name_plus_full_name)
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|> Enum.sort()
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assert full_names == [
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"brian cranston brian cranston",
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"zach daniel zach daniel"
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]
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end
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test "nested calculations are loaded if necessary" do
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best_friends_names =
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User
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|> Ash.Query.load([:best_friends_name])
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|> Api.read!()
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|> Enum.map(& &1.best_friends_name)
|
|
|> Enum.sort()
|
|
|
|
assert best_friends_names == [nil, "zach daniel"]
|
|
end
|
|
|
|
test "nested aggregates are loaded if necessary" do
|
|
best_friends_first_names_plus_stuff =
|
|
User
|
|
|> Ash.Query.load([:best_friends_first_name_plus_stuff])
|
|
|> Api.read!()
|
|
|> Enum.map(& &1.best_friends_first_name_plus_stuff)
|
|
|> Enum.sort()
|
|
|
|
assert best_friends_first_names_plus_stuff == [nil, "zach stuff"]
|
|
end
|
|
|
|
test "arguments can be supplied" do
|
|
full_names =
|
|
User
|
|
|> Ash.Query.load(full_name: %{separator: " - "})
|
|
|> Api.read!()
|
|
|> Enum.map(& &1.full_name)
|
|
|> Enum.sort()
|
|
|
|
assert full_names == ["brian - cranston", "zach - daniel"]
|
|
end
|
|
|
|
test "fields are selected if necessary for the calculation" do
|
|
full_names =
|
|
User
|
|
|> Ash.Query.select(:first_name)
|
|
|> Ash.Query.load(full_name: %{separator: " - "})
|
|
|> Api.read!()
|
|
|> Enum.map(& &1.full_name)
|
|
|> Enum.sort()
|
|
|
|
assert full_names == ["brian - cranston", "zach - daniel"]
|
|
end
|
|
|
|
test "custom calculations can be added to a query" do
|
|
full_names =
|
|
User
|
|
|> Ash.Query.calculate(:full_name, {Concat, keys: [:first_name, :last_name]}, :string, %{
|
|
separator: " \o.o/ "
|
|
})
|
|
|> Api.read!()
|
|
|> Enum.map(& &1.calculations.full_name)
|
|
|> Enum.sort()
|
|
|
|
assert full_names == ["brian \o.o/ cranston", "zach \o.o/ daniel"]
|
|
end
|
|
|
|
test "expression based calculations are resolved via evaluating the expression" do
|
|
full_names =
|
|
User
|
|
|> Ash.Query.load(:expr_full_name)
|
|
|> Api.read!()
|
|
|> Enum.map(& &1.expr_full_name)
|
|
|> Enum.sort()
|
|
|
|
assert full_names == ["brian cranston", "zach daniel"]
|
|
end
|
|
|
|
test "expression based calculations can be sorted on" do
|
|
full_names =
|
|
User
|
|
|> Ash.Query.load(:expr_full_name)
|
|
|> Ash.Query.sort(:expr_full_name)
|
|
|> Api.read!()
|
|
|> Enum.map(& &1.expr_full_name)
|
|
|
|
assert full_names == ["brian cranston", "zach daniel"]
|
|
|
|
full_names =
|
|
User
|
|
|> Ash.Query.load(:expr_full_name)
|
|
|> Ash.Query.sort(expr_full_name: :desc)
|
|
|> Api.read!()
|
|
|> Enum.map(& &1.expr_full_name)
|
|
|
|
assert full_names == ["zach daniel", "brian cranston"]
|
|
end
|
|
|
|
test "can sort on calculation in paginated read" do
|
|
full_names =
|
|
User
|
|
|> Ash.Query.for_read(:paginated)
|
|
|> Ash.Query.load(full_name_with_salutation: [salutation: "Mr"])
|
|
|> Ash.Query.sort(full_name_with_salutation: {:asc, %{salutation: "Mr"}})
|
|
|> Api.read!()
|
|
|> Map.get(:results)
|
|
|> Enum.map(& &1.full_name_with_salutation)
|
|
|
|
assert full_names == ["Mr brian cranston", "Mr zach daniel"]
|
|
end
|
|
|
|
test "the `if` calculation resolves the first expr when true, and the second when false" do
|
|
User
|
|
|> Ash.Changeset.new(%{first_name: "bob"})
|
|
|> Api.create!()
|
|
|
|
full_names =
|
|
User
|
|
|> Ash.Query.load(:conditional_full_name)
|
|
|> Api.read!()
|
|
|> Enum.map(& &1.conditional_full_name)
|
|
|> Enum.sort()
|
|
|
|
assert full_names == ["(none)", "brian cranston", "zach daniel"]
|
|
end
|
|
|
|
test "the `if` calculation can use the `do` style syntax" do
|
|
User
|
|
|> Ash.Changeset.new(%{first_name: "bob"})
|
|
|> Api.create!()
|
|
|
|
full_names =
|
|
User
|
|
|> Ash.Query.load(:conditional_full_name_block)
|
|
|> Api.read!()
|
|
|> Enum.map(& &1.conditional_full_name_block)
|
|
|> Enum.sort()
|
|
|
|
assert full_names == ["(none)", "brian cranston", "zach daniel"]
|
|
end
|
|
|
|
test "the `if` calculation can use the `cond` style syntax" do
|
|
User
|
|
|> Ash.Changeset.new(%{first_name: "bob"})
|
|
|> Api.create!()
|
|
|
|
full_names =
|
|
User
|
|
|> Ash.Query.load(:conditional_full_name_cond)
|
|
|> Api.read!()
|
|
|> Enum.map(& &1.conditional_full_name_cond)
|
|
|> Enum.sort()
|
|
|
|
assert full_names == ["bob", "brian cranston", "zach daniel"]
|
|
end
|
|
|
|
test "expression based calculations can handle lists of fields" do
|
|
User
|
|
|> Ash.Changeset.new(%{first_name: "bob"})
|
|
|> Api.create!()
|
|
|
|
full_names =
|
|
User
|
|
|> Ash.Query.load(:string_join_full_name)
|
|
|> Api.read!()
|
|
|> Enum.map(& &1.string_join_full_name)
|
|
|> Enum.sort()
|
|
|
|
assert full_names == ["bob", "brian cranston", "zach daniel"]
|
|
end
|
|
|
|
test "loading calculations with different relationship dependencies won't collide", %{
|
|
user1: %{id: user1_id} = user1
|
|
} do
|
|
User
|
|
|> Ash.Changeset.new(%{first_name: "chidi", last_name: "anagonye", special: true})
|
|
|> Ash.Changeset.manage_relationship(:best_friend, user1, type: :append_and_remove)
|
|
|> Api.create!()
|
|
|
|
assert %{
|
|
calculations: %{
|
|
names_of_best_friends_of_me: "brian cranston - chidi anagonye",
|
|
names_of_special_best_friends_of_me: "chidi anagonye"
|
|
}
|
|
} =
|
|
User
|
|
|> Ash.Query.filter(id == ^user1_id)
|
|
|> Ash.Query.load_calculation_as(
|
|
:names_of_best_friends_of_me,
|
|
:names_of_special_best_friends_of_me,
|
|
%{
|
|
only_special: true
|
|
}
|
|
)
|
|
|> Ash.Query.load_calculation_as(
|
|
:names_of_best_friends_of_me,
|
|
:names_of_best_friends_of_me
|
|
)
|
|
|> Api.read_one!()
|
|
end
|
|
|
|
test "loading calculations with different relationship dependencies won't collide, when manually loading one of the deps",
|
|
%{
|
|
user1: %{id: user1_id} = user1
|
|
} do
|
|
User
|
|
|> Ash.Changeset.new(%{first_name: "chidi", last_name: "anagonye", special: true})
|
|
|> Ash.Changeset.manage_relationship(:best_friend, user1, type: :append_and_remove)
|
|
|> Api.create!()
|
|
|
|
assert %{
|
|
calculations: %{
|
|
names_of_best_friends_of_me: "brian cranston - chidi anagonye",
|
|
names_of_special_best_friends_of_me: "chidi anagonye"
|
|
}
|
|
} =
|
|
User
|
|
|> Ash.Query.filter(id == ^user1_id)
|
|
|> Ash.Query.load(:best_friends_of_me)
|
|
|> Ash.Query.load_calculation_as(
|
|
:names_of_best_friends_of_me,
|
|
:names_of_special_best_friends_of_me,
|
|
%{
|
|
only_special: true
|
|
}
|
|
)
|
|
|> Ash.Query.load_calculation_as(
|
|
:names_of_best_friends_of_me,
|
|
:names_of_best_friends_of_me
|
|
)
|
|
|> Api.read_one!()
|
|
end
|
|
|
|
test "calculations that depend on many to many relationships will load", %{user2: user2} do
|
|
assert %{
|
|
friends_names: "zach daniel"
|
|
} =
|
|
User
|
|
|> Ash.Query.filter(id == ^user2.id)
|
|
|> Ash.Query.load(:friends_names)
|
|
|> Api.read_one!()
|
|
end
|
|
|
|
test "when already loading a calculation's dependency it is used" do
|
|
full_names =
|
|
User
|
|
|> Ash.Query.load([:full_name, :full_name_plus_full_name])
|
|
|> Api.read!()
|
|
|> Enum.map(& &1.full_name_plus_full_name)
|
|
|> Enum.sort()
|
|
|
|
assert full_names == ["brian cranston brian cranston", "zach daniel zach daniel"]
|
|
end
|
|
|
|
test "when already loading a nested calculation dependency, it is used" do
|
|
best_friends_names =
|
|
User
|
|
|> Ash.Query.load([:best_friends_name, best_friend: [:full_name]])
|
|
|> Api.read!()
|
|
|> Enum.map(& &1.best_friends_name)
|
|
|> Enum.sort()
|
|
|
|
assert best_friends_names == [nil, "zach daniel"]
|
|
end
|
|
|
|
test "loading a nested aggregate works" do
|
|
best_friends_best_friends_first_names =
|
|
User
|
|
|> Ash.Query.load(:best_friends_best_friends_first_name)
|
|
|> Api.read!()
|
|
|> Enum.map(& &1.best_friends_best_friends_first_name)
|
|
|> Enum.sort()
|
|
|
|
assert best_friends_best_friends_first_names == ["bf: ", "bf: "]
|
|
end
|
|
|
|
test "loading a nested aggregate works even when its already being loaded" do
|
|
best_friends_best_friends_first_names =
|
|
User
|
|
|> Ash.Query.load([
|
|
:best_friends_best_friends_first_name,
|
|
best_friend: [best_friend: [:first_name]]
|
|
])
|
|
|> Api.read!()
|
|
|> Enum.map(& &1.best_friends_best_friends_first_name)
|
|
|> Enum.sort()
|
|
|
|
assert best_friends_best_friends_first_names == ["bf: ", "bf: "]
|
|
end
|
|
|
|
test "loading a calculation with selects that loads a calculation with selects works" do
|
|
assert ["brian cranston brian", "zach daniel zach"] ==
|
|
User
|
|
|> Ash.Query.select([])
|
|
|> Ash.Query.load([
|
|
:full_name_plus_first_name
|
|
])
|
|
|> Api.read!()
|
|
|> Enum.map(& &1.full_name_plus_first_name)
|
|
|> Enum.sort()
|
|
end
|
|
|
|
test "nested calculations that depend on aggregates work" do
|
|
assert [false, false] =
|
|
Actor
|
|
|> Ash.Query.load(:active)
|
|
|> Api.read!(authorize?: true)
|
|
|> Enum.map(& &1.active)
|
|
end
|
|
|
|
test "invalid calculation arguments show errors in the query" do
|
|
assert %{valid?: false} =
|
|
User
|
|
|> Ash.Query.load(full_name: %{separator: %{foo: :bar}})
|
|
end
|
|
end
|