Fix binary uuid casting (#121)

Co-authored-by: Greg Rychlewski <grychle@LLL7WPM64V5M.ngco.com>

Author: greg-rychlewski

lib/ecto/adapters/sqlite3/connection.ex

@@ -1431,6 +1431,26 @@ defmodule Ecto.Adapters.SQLite3.Connection do
     [?x, ?', hex, ?']
   end
 
+  def expr(%Ecto.Query.Tagged{value: expr, type: :binary_id}, sources, query) do
+    case Application.get_env(:ecto_sqlite3, :binary_id_type, :string) do
+      :string ->
+        ["CAST(", expr(expr, sources, query), " AS ", column_type(:string, query), ?)]
+
+      :binary ->
+        [expr(expr, sources, query)]
+    end
+  end
+
+  def expr(%Ecto.Query.Tagged{value: expr, type: :uuid}, sources, query) do
+    case Application.get_env(:ecto_sqlite3, :uuid_type, :string) do
+      :string ->
+        ["CAST(", expr(expr, sources, query), " AS ", column_type(:string, query), ?)]
+
+      :binary ->
+        [expr(expr, sources, query)]
+    end
+  end
+
   def expr(%Ecto.Query.Tagged{value: other, type: type}, sources, query)
       when type in [:decimal, :float] do
     ["CAST(", expr(other, sources, query), " AS REAL)"]

test/ecto/integration/uuid_test.exs

@@ -4,6 +4,8 @@ defmodule Ecto.Integration.UUIDTest do
   alias Ecto.Integration.TestRepo
   alias EctoSQLite3.Schemas.Product
 
+  import Ecto.Query, only: [from: 2]
+
   setup do
     Application.put_env(:ecto_sqlite3, :uuid_type, :string)
     on_exit(fn -> Application.put_env(:ecto_sqlite3, :uuid_type, :string) end)
@@ -34,4 +36,40 @@ defmodule Ecto.Integration.UUIDTest do
     assert found
     assert found.external_id == external_id
   end
+
+  test "handles uuid casting with binary format" do
+    Application.put_env(:ecto_sqlite3, :uuid_type, :binary)
+    Application.put_env(:ecto_sqlite3, :binary_id_type, :binary)
+
+    external_id = Ecto.UUID.generate()
+    TestRepo.insert!(%Product{external_id: external_id, bid: external_id})
+
+    product =
+      TestRepo.one(from(p in Product, where: p.external_id == type(p.bid, Ecto.UUID)))
+
+    assert %{external_id: ^external_id} = product
+
+    product =
+      TestRepo.one(
+        from(p in Product, where: p.external_id == type(^external_id, Ecto.UUID))
+      )
+
+    assert %{external_id: ^external_id} = product
+  end
+
+  test "handles binary_id casting with binary format" do
+    Application.put_env(:ecto_sqlite3, :uuid_type, :binary)
+    Application.put_env(:ecto_sqlite3, :binary_id_type, :binary)
+
+    bid = Ecto.UUID.generate()
+    TestRepo.insert!(%Product{bid: bid, external_id: bid})
+
+    product =
+      TestRepo.one(from(p in Product, where: p.bid == type(p.external_id, :binary_id)))
+
+    assert %{bid: ^bid} = product
+
+    product = TestRepo.one(from(p in Product, where: p.bid == type(^bid, :binary_id)))
+    assert %{bid: ^bid} = product
+  end
 end

test/support/migration.ex

@@ -28,6 +28,7 @@ defmodule EctoSQLite3.Integration.Migration do
       add(:name, :string)
       add(:description, :text)
       add(:external_id, :uuid)
+      add(:bid, :binary_id)
       add(:tags, {:array, :string})
       add(:approved_at, :naive_datetime)
       add(:price, :decimal)

test/support/schemas/product.ex

@@ -11,6 +11,7 @@ defmodule EctoSQLite3.Schemas.Product do
     field(:name, :string)
     field(:description, :string)
     field(:external_id, Ecto.UUID)
+    field(:bid, :binary_id)
     field(:tags, {:array, :string}, default: [])
     field(:approved_at, :naive_datetime)
     field(:price, :decimal)