[WIP] Ignore some cov viz

[EmmaRenauld]

Adding some comments to ignore coverage, or adding tests to improve coverage

Below are listed the poorly covered functions in viz:

• scilpy.viz.backends.fury (COVERAGE: FROM TO )
  - creating_interactive_window: only used with option --show_rendering (or not --silent) in a few scripts. Can't be used in github. Ignoring.
  - snapshot_scene: à voir, used in plot_each_shell et plot_proj_shell, used in viz.legacy, used in some script. Should be covered with new script in pr 1150)
  - create_contours_actor: à voir, only used in viz.slice.create_contours_slicer.
  - create_odf_actors: à voir, only used in viz.slice.create_peaks_actor.
  - Others already good

• scilpy.viz.backends.pil (COVERAGE: FROM TO )

  • draw_2d_array_at_position: already covered, but very poorly. à voir, only used in screenshot.compose_image.
  • Others already good

• scilpy.viz.backends.vtk: (COVERAGE: FROM TO )

  • lut_from_colors: Only used in color.lut_from_matplotib_name.. See below. À voir: devrait être amélioré.
  • create_tube_with_radii: ajouté option dans test_bundle_diameter, voir si ça passe
  • contours_from_data: à voir, only used in slice.create_contour_slider
  • Others already good

• scil.viz.color : (COVERAGE: FROM TO )
  - generate_n_colors: Used in plot_each_shell and plot_proj_shell. Can't be tested. WIP Also used in sclicer.create_binham_slicer, à voir.
  - get_lookup_table: Unsure about this. See issue [BUG] Bug in color management #1152. To be managed elsewhere.
  - lut_from_matplotlib_name: Tested through new test for scil_viz_tractogram_seeds_3d. I added an option to hide the window in debug mode. À voir: devrait être amélioré.
  - clip_and_normalize_data: beaucoup de ifs pas testés, à voir.
  - ambiant_occlusion: Added option in test for scil_tractogram_assign_custom_color.py. À voir: devrait être amélioré.
  - generate_local_coloring: Added option in test for scil_tractogram_assign_custom_color.py. À voir: devrait être amélioré.
  - others already good

• scil.viz.gradients: (COVERAGE: FROM TO )
  - plot_each_shell: Only used in scil_viz_gradient_screenshot. Cannot be tested. Ignoring.
  - plot_proj_shell: Only used in scil_viz_gradient_screenshot and in scil_gradients_validate_sampling. Cannot be tested. Ignoring.
  - build_ms_from_shell_idx: WIP. Todo: Add an option debug in script scil_viz_gradient_screenshot to be able to run some parts.

• scil.viz.plot Already good.

• scil.viz.screenshot: (COVERAGE: FROM TO )
  - screenshot_contour: could be managed, but leads to error. Opened a new PR: (voir ma branche fix_overlays)
  - screenshot_peaks: No peaks in test data to be able to add option in scil_viz_volume_screenshot. Todo: add issue.
  - compose_mosaic: Added a test in test_viz_volume_screenshot_mosaic. À vérifier si mieux:

• scil.viz.sclice (COVERAGE: FROM TO )
  - create_texture_slicer``: voir si on peut gérer plus de "ifs" - create_contours_slicer: only used in screenshot.screenshot_contour. See above. - create_peask_slicer: used in screenshot.screenshot_peaks(see higher) (À voir, et dans scil_viz_fodf. Vérifier si PR1150 règle ça) -create_odf_sclier: dans scil_viz_fodf. Vérifier si PR1150 règle ça) - create_bingham_slicer`: ?? pourquoi ça passe pas dedans dans scil_viz_bingham_fit? À voir

• scil.viz.utils: (COVERAGE: FROM TO )
  - check_mosaic_layout: Will be ok if I manage to add a test for screenshot_mosaic.
  - compute_cell_topleft_pos: idem

[codecov]

Codecov Report

Attention: Patch coverage is 31.14754% with 42 lines in your changes missing coverage. Please review.

Project coverage is 59.91%. Comparing base (a5d76d9) to head (94f0929).

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1137      +/-   ##
==========================================
+ Coverage   59.10%   59.91%   +0.81%     
==========================================
  Files         651      651              
  Lines       30725    30668      -57     
  Branches     3464     3447      -17     
==========================================
+ Hits        18161    18376     +215     
+ Misses      11096    10807     -289     
- Partials     1468     1485      +17     

Components	Coverage Δ
Scripts	57.82% <31.66%> (+0.37%)	⬆️
Library	63.10% <0.00%> (+1.50%)	⬆️

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