public function testGetReadConnectionReturnsWriteConnection()
 {
     $manager = new ConnectionManagerSingle();
     $manager->setConfiguration(['dsn' => 'sqlite::memory:']);
     $writeCon = $manager->getWriteConnection(new SqliteAdapter());
     $readCon = $manager->getReadConnection(new SqliteAdapter());
     $this->assertSame($writeCon, $readCon);
 }