copy -> clone + separate method in pool example

Author: DifferentialOrange

connection_pool/example_test.go

@@ -575,6 +575,21 @@ func ExampleConnectionPool_NewPrepared() {
 	}
 }
 
+func getTestTxnOpts() tarantool.Opts {
+	txnOpts := connOpts.Clone()
+
+	// Assert that server supports expected protocol features
+	txnOpts.RequiredProtocolInfo = tarantool.ProtocolInfo{
+		Version: tarantool.ProtocolVersion(1),
+		Features: []tarantool.ProtocolFeature{
+			tarantool.StreamsFeature,
+			tarantool.TransactionsFeature,
+		},
+	}
+
+	return txnOpts
+}
+
 func ExampleCommitRequest() {
 	var req tarantool.Request
 	var resp *tarantool.Response
@@ -586,16 +601,7 @@ func ExampleCommitRequest() {
 		return
 	}
 
-	// Assert that server supports expected features
-	txnOpts := connOpts.Copy()
-	txnOpts.RequiredProtocolInfo = tarantool.ProtocolInfo{
-		Version: tarantool.ProtocolVersion(1),
-		Features: []tarantool.ProtocolFeature{
-			tarantool.StreamsFeature,
-			tarantool.TransactionsFeature,
-		},
-	}
-
+	txnOpts := getTestTxnOpts()
 	pool, err := examplePool(testRoles, txnOpts)
 	if err != nil {
 		fmt.Println(err)
@@ -682,16 +688,7 @@ func ExampleRollbackRequest() {
 		return
 	}
 
-	// Assert that server supports expected features
-	txnOpts := connOpts.Copy()
-	txnOpts.RequiredProtocolInfo = tarantool.ProtocolInfo{
-		Version: tarantool.ProtocolVersion(1),
-		Features: []tarantool.ProtocolFeature{
-			tarantool.StreamsFeature,
-			tarantool.TransactionsFeature,
-		},
-	}
-
+	txnOpts := getTestTxnOpts()
 	// example pool has only one rw instance
 	pool, err := examplePool(testRoles, txnOpts)
 	if err != nil {
@@ -778,16 +775,7 @@ func ExampleBeginRequest_TxnIsolation() {
 		return
 	}
 
-	// Assert that server supports expected features
-	txnOpts := connOpts.Copy()
-	txnOpts.RequiredProtocolInfo = tarantool.ProtocolInfo{
-		Version: tarantool.ProtocolVersion(1),
-		Features: []tarantool.ProtocolFeature{
-			tarantool.StreamsFeature,
-			tarantool.TransactionsFeature,
-		},
-	}
-
+	txnOpts := getTestTxnOpts()
 	// example pool has only one rw instance
 	pool, err := examplePool(testRoles, txnOpts)
 	if err != nil {