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156 lines
5 KiB
Elixir
156 lines
5 KiB
Elixir
defmodule Ash.Test.Resource.Relationships.ManyToManyTest do
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@moduledoc false
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use ExUnit.Case, async: true
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defmacrop defposts(do: body) do
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quote do
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defmodule Post do
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@moduledoc false
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use Ash.Resource
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attributes do
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attribute :id, :uuid, primary_key?: true, default: &Ecto.UUID.generate/0
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end
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unquote(body)
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end
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end
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end
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describe "representation" do
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test "it creates a relationship and a join relationship" do
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defposts do
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relationships do
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many_to_many :related_posts, Post,
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through: SomeResource,
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source_field_on_join_table: :post_id,
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destination_field_on_join_table: :related_post_id
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end
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end
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assert [
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%Ash.Resource.Relationships.HasMany{
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cardinality: :many,
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destination: SomeResource,
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destination_field: :post_id,
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name: :related_posts_join_assoc,
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source: Ash.Test.Resource.Relationships.ManyToManyTest.Post,
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source_field: :id,
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type: :has_many
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},
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%Ash.Resource.Relationships.ManyToMany{
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cardinality: :many,
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destination: Ash.Test.Resource.Relationships.ManyToManyTest.Post,
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destination_field: :id,
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destination_field_on_join_table: :related_post_id,
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name: :related_posts,
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source: Ash.Test.Resource.Relationships.ManyToManyTest.Post,
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source_field: :id,
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source_field_on_join_table: :post_id,
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through: SomeResource,
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type: :many_to_many
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}
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] = Ash.relationships(Post)
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end
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end
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describe "validation" do
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test "it fails if you pass a string to `through`" do
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assert_raise(
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Ash.Error.ResourceDslError,
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"relationships -> many_to_many -> foobars:\n expected :through to be an atom, got: \"some_table\"",
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fn ->
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defposts do
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relationships do
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many_to_many :foobars, Foobar,
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through: "some_table",
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source_field_on_join_table: :source_post_id,
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destination_field_on_join_table: :destination_post_id
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end
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end
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end
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)
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end
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test "you can pass a module to `through`" do
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defposts do
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relationships do
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many_to_many :foobars, Foobar,
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through: FooBars,
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source_field_on_join_table: :source_post_id,
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destination_field_on_join_table: :destination_post_id
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end
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end
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end
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test "it fails if you dont pass an atom for `source_field_on_join_table`" do
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assert_raise(
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Ash.Error.ResourceDslError,
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"relationships -> many_to_many -> foobars:\n expected :source_field_on_join_table to be an atom, got: \"what\"",
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fn ->
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defposts do
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relationships do
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many_to_many :foobars, Foobar,
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through: FooBars,
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source_field_on_join_table: "what",
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destination_field_on_join_table: :destination_post_id
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end
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end
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end
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)
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end
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test "it fails if you dont pass an atom for `destination_field_on_join_table`" do
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assert_raise(
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Ash.Error.ResourceDslError,
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"relationships -> many_to_many -> foobars:\n expected :destination_field_on_join_table to be an atom, got: \"what\"",
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fn ->
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defposts do
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relationships do
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many_to_many :foobars, Foobar,
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through: FooBar,
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destination_field_on_join_table: "what",
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source_field_on_join_table: :source_post_id
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end
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end
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end
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)
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end
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test "it fails if you dont pass an atom for `source_field`" do
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assert_raise(
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Ash.Error.ResourceDslError,
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"relationships -> many_to_many -> foobars:\n expected :source_field to be an atom, got: \"what\"",
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fn ->
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defposts do
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relationships do
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many_to_many :foobars, Foobar,
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through: FooBar,
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source_field: "what",
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source_field_on_join_table: :source_post_id,
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destination_field_on_join_table: :destination_post_id
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end
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end
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end
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)
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end
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test "it fails if you dont pass an atom for `destination_field`" do
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assert_raise(
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Ash.Error.ResourceDslError,
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"relationships -> many_to_many -> foobars:\n expected :destination_field to be an atom, got: \"what\"",
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fn ->
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defposts do
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relationships do
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many_to_many :foobars, Foobar,
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through: FooBars,
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destination_field: "what",
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source_field_on_join_table: :source_post_id,
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destination_field_on_join_table: :destination_post_id
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end
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end
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end
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)
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end
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end
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end
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