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-rw-r--r--activerecord/test/cases/adapters/mysql2/count_deleted_rows_with_lock_test.rb28
1 files changed, 28 insertions, 0 deletions
diff --git a/activerecord/test/cases/adapters/mysql2/count_deleted_rows_with_lock_test.rb b/activerecord/test/cases/adapters/mysql2/count_deleted_rows_with_lock_test.rb
new file mode 100644
index 0000000000..4d361e405c
--- /dev/null
+++ b/activerecord/test/cases/adapters/mysql2/count_deleted_rows_with_lock_test.rb
@@ -0,0 +1,28 @@
+# frozen_string_literal: true
+
+require "cases/helper"
+require "support/connection_helper"
+require "models/author"
+require "models/bulb"
+
+module ActiveRecord
+ class CountDeletedRowsWithLockTest < ActiveRecord::Mysql2TestCase
+ test "delete and create in different threads synchronize correctly" do
+ Bulb.unscoped.delete_all
+ Bulb.create!(name: "Jimmy", color: "blue")
+
+ delete_thread = Thread.new do
+ Bulb.unscoped.delete_all
+ end
+
+ create_thread = Thread.new do
+ Author.create!(name: "Tommy")
+ end
+
+ delete_thread.join
+ create_thread.join
+
+ assert_equal 1, delete_thread.value
+ end
+ end
+end