anchor.diff:        }, overrides: <Type, Generator>{
           FlutterVersion: () => FlutterVersion(clock: _testClock),
           ProcessManager: () => processManager,
  -        Cache: () => mockCache,
  +        Cache: () => cache,
         });
   
         testWithoutContext('prints nothing when Flutter installation looks out-of-date but is actually up-to-date', () async {
  
positive.code:           lastKnownRemoteVersion: getChannelUpToDateVersion(),
            lastTimeWarningWasPrinted: _testClock.now(),
          );
  
          when(mockCache.getStampFor(VersionCheckStamp.flutterVersionCheckStampFile))
            .thenReturn(json.encode(stamp));
  
          await checkVersionFreshness(
            flutterVersion,
            cache: mockCache,
            clock: _testClock,
            logger: logger,
            localFrameworkCommitDate: getChannelOutOfDateVersion(),
  
negative.code:           "lastTimeWarningWasPrinted": "${_testClock.now()}"
          }
          ''';
            cache.versionStamp = value;
  
            final VersionCheckStamp stamp = await VersionCheckStamp.load(cache, BufferLogger.test());
  
            expect(stamp.lastKnownRemoteVersion, _testClock.ago(const Duration(days: 1)));
            expect(stamp.lastTimeVersionWasChecked, _testClock.ago(const Duration(days: 2)));
  