Make sure to assign the timeout on the syncer so the backup doesn't fail

Author: Dylan Terry

replication/backup_test.go

@@ -12,6 +12,7 @@ import (
 	"github.com/go-mysql-org/go-mysql/mysql"
 )
 
+// TestStartBackupEndInGivenTime tests the backup process completes within a given time.
 func (t *testSyncerSuite) TestStartBackupEndInGivenTime() {
 	t.setupTest(mysql.MySQLFlavor)
 
@@ -95,6 +96,8 @@ func testBackup(t *testSyncerSuite, isSynchronous bool) {
 	ctx, cancel := context.WithTimeout(context.Background(), failTimeout)
 	defer cancel()
 
+	t.b.ctx = ctx
+
 	// Wait for the backup to complete or timeout
 	select {
 	case <-done: