Add actions to support books' editions.

test/decentralised_book_index/metadata/book_test.exs

@@ -0,0 +1,50 @@
+defmodule DecentralisedBookIndex.Metadata.BookTest do
+  use DecentralisedBookIndex.DataCase, async: true
+
+  alias DecentralisedBookIndex.Metadata
+
+  describe "books and registries relationship" do
+    test "a new book get new registry by default" do
+      assert {:ok, book} = Metadata.create_book("Book", "1234567890", "An description")
+      assert book.book_editions_registry_id != nil
+    end
+
+    test "a new book belongs to a registry if specified" do
+      assert {:ok, registry} = Metadata.create_book_editions_registry()
+      assert {:ok, book} = Metadata.create_book("Book", "1234567890", "An description", registry.id)
+      assert book.book_editions_registry_id == registry.id
+    end
+
+    test "a new book to a registry via a related book record" do
+      {:ok, related_book} = Metadata.create_book("Book", "1234567890", "An description")
+
+      assert {:ok, book} =
+        Metadata.add_book_to_related_editions_registry("Book2", "1234567891", "An description2", related_book.id)
+
+      assert related_book.book_editions_registry_id == book.book_editions_registry_id
+    end
+
+    test "a new book to a registry via a empty related book record" do
+      assert {:error, _} =
+        Metadata.add_book_to_related_editions_registry("Book2", "1234567891", "An description2", nil)
+    end
+  end
+
+  describe "books alternatives names" do
+    test "new book has no alternatives names" do
+      {:ok, book} = Metadata.create_book("Book", "1234567890", "An description")
+      assert {:ok, alternatives_names} = Metadata.get_book_alternative_editions(book)
+      assert alternatives_names = []
+    end
+
+    test "book has related book so they has one alternative name" do
+      {:ok, related_book} = Metadata.create_book("Book", "1234567890", "An description")
+
+      {:ok, book} =
+        Metadata.add_book_to_related_editions_registry("Book2", "1234567891", "An description2", related_book.id)
+
+      assert {:ok, alternatives_names} = Metadata.get_book_alternative_editions(book)
+      assert alternatives_names = [related_book]
+    end
+  end
+end