1 files changed, 77 insertions, 0 deletions
diff --git a/activerecord/test/cases/suppressor_test.rb b/activerecord/test/cases/suppressor_test.rb
new file mode 100644
index 0000000000..b68f0033d9
--- /dev/null
+++ b/activerecord/test/cases/suppressor_test.rb
@@ -0,0 +1,77 @@
+# frozen_string_literal: true
+
+require "cases/helper"
+require "models/notification"
+require "models/user"
+
+class SuppressorTest < ActiveRecord::TestCase
+  def test_suppresses_create
+    assert_no_difference -> { Notification.count } do
+      Notification.suppress do
+        Notification.create
+        Notification.create!
+        Notification.new.save
+        Notification.new.save!
+      end
+    end
+  end
+
+  def test_suppresses_update
+    user = User.create! token: "asdf"
+
+    User.suppress do
+      user.update token: "ghjkl"
+      assert_equal "asdf", user.reload.token
+
+      user.update! token: "zxcvbnm"
+      assert_equal "asdf", user.reload.token
+
+      user.token = "qwerty"
+      user.save
+      assert_equal "asdf", user.reload.token
+
+      user.token = "uiop"
+      user.save!
+      assert_equal "asdf", user.reload.token
+    end
+  end
+
+  def test_suppresses_create_in_callback
+    assert_difference -> { User.count } do
+      assert_no_difference -> { Notification.count } do
+        Notification.suppress { UserWithNotification.create! }
+      end
+    end
+  end
+
+  def test_resumes_saving_after_suppression_complete
+    Notification.suppress { UserWithNotification.create! }
+
+    assert_difference -> { Notification.count } do
+      Notification.create!(message: "New Comment")
+    end
+  end
+
+  def test_suppresses_validations_on_create
+    assert_no_difference -> { Notification.count } do
+      Notification.suppress do
+        User.create
+        User.create!
+        User.new.save
+        User.new.save!
+      end
+    end
+  end
+
+  def test_suppresses_when_nested_multiple_times
+    assert_no_difference -> { Notification.count } do
+      Notification.suppress do
+        Notification.suppress {}
+        Notification.create
+        Notification.create!
+        Notification.new.save
+        Notification.new.save!
+      end
+    end
+  end
+end