Improve coverage

[natario1]

No description provided.

[codecov]

Codecov Report

Merging #22 into master will increase coverage by 15.5%.
The diff coverage is 70.1%.

Impacted Files	Coverage Δ	Complexity Δ
...m/otaliastudios/cameraview/PinchGestureLayout.java	41.9% <ø> (+12.9%)	4 <0> (+4)	⬆️
...ain/java/com/otaliastudios/cameraview/Camera1.java	0% <0%> (ø)	0 <0> (ø)	⬇️
.../java/com/otaliastudios/cameraview/CameraView.java	47.3% <0%> (+13.7%)	74 <0> (+74)	⬆️
.../com/otaliastudios/cameraview/GridLinesLayout.java	95% <100%> (+65.2%)	14 <1> (+14)	⬆️
...ws/com/otaliastudios/cameraview/GestureLayout.java	100% <100%> (+22.2%)	7 <1> (+7)	⬆️
...com/otaliastudios/cameraview/TapGestureLayout.java	40.6% <100%> (+23.4%)	6 <0> (+6)	⬆️
...om/otaliastudios/cameraview/OrientationHelper.java	82.5% <100%> (+52.5%)	4 <1> (+4)	⬆️
...m/otaliastudios/cameraview/TextureViewPreview.java	40.9% <60%> (+40.9%)	4 <2> (+4)	⬆️
...in/views/com/otaliastudios/cameraview/Preview.java	87.2% <66.6%> (+78.3%)	15 <8> (+15)	⬆️
...m/otaliastudios/cameraview/SurfaceViewPreview.java	88.2% <77.7%> (+88.2%)	3 <2> (+3)	⬆️
... and 15 more