1 files changed, 27 insertions, 0 deletions
diff --git a/spec/support/before_all_adapter.rb b/spec/support/before_all_adapter.rb
new file mode 100644
index 00000000000..f48e0f46e80
--- /dev/null
+++ b/spec/support/before_all_adapter.rb
@@ -0,0 +1,27 @@
+# frozen_string_literal: true
+
+class BeforeAllAdapter # rubocop:disable Gitlab/NamespacedClass
+  def self.all_connection_pools
+    ::ActiveRecord::Base.connection_handler.all_connection_pools
+  end
+
+  def self.begin_transaction
+    self.all_connection_pools.each do |connection_pool|
+      connection_pool.connection.begin_transaction(joinable: false)
+    end
+  end
+
+  def self.rollback_transaction
+    self.all_connection_pools.each do |connection_pool|
+      if connection_pool.connection.open_transactions.zero?
+        warn "!!! before_all transaction has been already rollbacked and " \
+              "could work incorrectly"
+        next
+      end
+
+      connection_pool.connection.rollback_transaction
+    end
+  end
+end
+
+TestProf::BeforeAll.adapter = ::BeforeAllAdapter