public function testTableCommonGroups()
 {
     for ($i = 0; $i < 10; ++$i) {
         Profiler::start('foo.one');
         usleep(10000);
         Profiler::stop();
         Profiler::start('bar.two');
         usleep(15000);
         Profiler::stop();
     }
     $this->assertSame("+-------+-------+------+\n" . "| cost  | count | name |\n" . "+-------+-------+------+\n" . "| 100 % | 10    | one  |\n" . "+-------+-------+------+\n" . "| 100 % | 10    | two  |\n" . "+-------+-------+------+", Profiler::getTimerTableStat(['cost', 'count', 'name']));
 }