From 86192bdf758c399a5346f37634a47c52fb437c5f Mon Sep 17 00:00:00 2001
From: kodawill <wilfrido.nuqui@external.tablecheck.com>
Date: Wed, 27 Sep 2023 15:15:56 +0800
Subject: [PATCH 1/2] Add failing spec to demonstrate bug on autosave: true in
 accepts_nested_attributes_for

---
 spec/mongoid/attributes/nested_spec.rb        | 30 +++++++++++++++++++
 spec/mongoid/attributes/nested_spec_models.rb |  8 +++++
 2 files changed, 38 insertions(+)

diff --git a/spec/mongoid/attributes/nested_spec.rb b/spec/mongoid/attributes/nested_spec.rb
index 8943d382e3..94ba903481 100644
--- a/spec/mongoid/attributes/nested_spec.rb
+++ b/spec/mongoid/attributes/nested_spec.rb
@@ -66,6 +66,36 @@
         expect(association).to_not be_autosave
       end
     end
+
+    context "when autosave is explicitly false in association" do
+      context "when autosave is true as nested attributes" do
+
+        let(:post) do
+          NestedPost.new
+        end
+
+        before do
+          NestedPost.accepts_nested_attributes_for :likes, autosave: true
+        end
+
+        after do
+          NestedPost.send(:undef_method, :likes_attributes=)
+          NestedPost.nested_attributes.clear
+        end
+
+        let(:association) do
+          NestedPost.reflect_on_association(:likes)
+        end
+
+        it "sets autosave to true" do
+          expect(association).to be_autosave
+        end
+
+        it "autosaves if the association is not embedded" do
+          expect(post).to respond_to(:autosave_documents_for_likes)
+        end
+      end
+    end
   end
 
   describe "#initialize" do
diff --git a/spec/mongoid/attributes/nested_spec_models.rb b/spec/mongoid/attributes/nested_spec_models.rb
index 843b34bce5..8d72f5adc5 100644
--- a/spec/mongoid/attributes/nested_spec_models.rb
+++ b/spec/mongoid/attributes/nested_spec_models.rb
@@ -16,6 +16,12 @@ class NestedComment
   belongs_to :post, class_name: "NestedPost"
 end
 
+class NestedLike
+  include Mongoid::Document
+
+  belongs_to :post, class_name: "NestedPost"
+end
+
 class NestedPost
   include Mongoid::Document
 
@@ -23,6 +29,8 @@ class NestedPost
   belongs_to :author, class_name: "NestedAuthor"
   has_many :comments, class_name: "NestedComment"
   accepts_nested_attributes_for :comments
+  has_many :likes, class_name: "NestedLike", autosave: false
+  accepts_nested_attributes_for :likes, autosave: true
 end
 
 class NestedBook

From 46373fad694c447726bcd4fa1df23ac3fca363ce Mon Sep 17 00:00:00 2001
From: kodawill <wilfrido.nuqui@external.tablecheck.com>
Date: Mon, 2 Oct 2023 13:10:48 +0800
Subject: [PATCH 2/2] Another test demonstrating the expected behavior to fail

---
 spec/mongoid/attributes/nested_spec.rb | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/spec/mongoid/attributes/nested_spec.rb b/spec/mongoid/attributes/nested_spec.rb
index 94ba903481..679e6d4e12 100644
--- a/spec/mongoid/attributes/nested_spec.rb
+++ b/spec/mongoid/attributes/nested_spec.rb
@@ -91,9 +91,15 @@
           expect(association).to be_autosave
         end
 
-        it "autosaves if the association is not embedded" do
+        it "defines autosave_documents_for_likes" do
           expect(post).to respond_to(:autosave_documents_for_likes)
         end
+
+        it "saves associated NestedLike documents" do
+          like = NestedLike.new
+          post = NestedPost.new(likes: [like])
+          expect { post.save }.to change(NestedLike, :count).by(1)
+        end
       end
     end
   end