This issue is created to track the progress on adding the remaining missing unit tests for the camera plugin, after flutter/plugins#4059 has been merged.

While the test coverage of the camera plugin has been improved with this series of pull requests, a few methods, particularly in the Camera class itself still remain untested. (More information on why these are still missing can be found here).

As of right now, specifically the following methods of the Camera class are still lacking tests:

• open
• takePicture
• startVideoRecording
• stopVideoRecording
• setFocusMode
• startPreview
• startPreviewWithimageStream