anchor.diff:          data.timelineEvents,
           matches,
         );
  -
  -      await env.tearDownEnvironment();
       });
     });
   }
  
positive.code:         equals(frame1UiEvent),
        );
        expect(data.cpuProfileData, isNotNull);
  
        await env.tearDownEnvironment();
      });
  
      test(
  
negative.code:         data.frames.length,
          equals(1),
        );
      });
  
      test('matchesForSearch', () async {
        // Verify an empty list is returned for bad input.
        expect(performanceController.matchesForSearch(''), isEmpty);
  
  