Add test for updating with empty cast association (#3077)

Show that update works the same way as insert
elixir-ecto · Jul 29, 2019 · 2e700ef · 2e700ef
1 parent 698d3ac
commit 2e700ef
Showing 1 changed file with 17 additions and 0 deletions.
diff --git a/integration_test/cases/assoc.exs b/integration_test/cases/assoc.exs
@@ -654,6  654,23 @@ defmodule Ecto.Integration.AssocTest do
     assert post.comments == []
   end
 
   test "updating changeset with empty cast associations" do
     post = TestRepo.insert!(%Post{})
     c1 = TestRepo.insert!(%Comment{post_id: post.id})
     c2 = TestRepo.insert!(%Comment{post_id: post.id})
 
     assert TestRepo.all(Comment) == [c1, c2]
 
     post = TestRepo.get!(from(Post, preload: [:comments]), post.id)
 
     post
     |> Ecto.Changeset.change
     |> Ecto.Changeset.put_assoc(:comments, [])
     |> TestRepo.update!()
 
     assert TestRepo.all(Comment) == []
   end
 
   ## Dependent
 
   test "has_many assoc on delete deletes all" do