RUBY-3571 Add TransientTransactionError label to PoolClearedError (mongodb#2906)

Author: comandeo-mongo

.github/workflows/test.yml

@@ -16,33 +16,33 @@ jobs:
       fail-fast: false
       matrix:
         os: [ ubuntu-20.04 ]
-        ruby: ["2.7", "3.0", "3.1", "3.2"]
-        mongodb: ["3.6", "4.4", "5.0", "6.0", "7.0"]
+        ruby: ["2.7", "3.0", "3.1", "3.2", "3.3"]
+        mongodb: ["4.4", "5.0", "6.0", "7.0", "8.0"]
         topology: [replica_set, sharded_cluster]
         include:
           - os: macos
             ruby: "2.7"
-            mongodb: "5.0"
+            mongodb: "7.0"
             topology: server
           - os: macos
             ruby: "3.0"
-            mongodb: "5.0"
+            mongodb: "7.0"
             topology: server
           - os: ubuntu-latest
             ruby: "2.7"
-            mongodb: "5.0"
+            mongodb: "7.0"
             topology: server
           - os: ubuntu-latest
             ruby: "3.1"
-            mongodb: "5.0"
+            mongodb: "7.0"
             topology: server
           - os: ubuntu-latest
             ruby: "3.2"
-            mongodb: "5.0"
+            mongodb: "7.0"
             topology: server
           - os: ubuntu-latest
             ruby: "3.2"
-            mongodb: "6.0"
+            mongodb: "8.0"
             topology: replica_set
     steps:
     - name: repo checkout

lib/mongo/error/pool_cleared_error.rb

@@ -31,6 +31,7 @@ class PoolClearedError < PoolError
       #
       # @api private
       def initialize(address, pool)
+        add_label('TransientTransactionError')
         super(address, pool,
           "Connection to #{address} interrupted due to server monitor timeout " +
             "(for pool 0x#{pool.object_id})")

spec/mongo/error/pool_cleared_error_spec.rb

@@ -0,0 +1,17 @@
+# frozen_string_literal: true
+
+require 'lite_spec_helper'
+
+describe Mongo::Error::PoolClearedError do
+  describe '#initialize' do
+    let(:error) do
+      described_class.new(
+        instance_double(Mongo::Address), instance_double(Mongo::Server::ConnectionPool)
+      )
+    end
+
+    it 'appends TransientTransactionError' do
+      expect(error.labels).to include('TransientTransactionError')
+    end
+  end
+end