Reinstate image comparison tests

[AdamOrmondroyd]

Description

Spotted #6, so have reinstated the tests. Since then, it seems the $3.5\sigma$ contour doesn't plot any more, and the style of the line plots is a bit different. Comparison below:

Old

New

I realised that the "no_ax" tests should output the same as their "fig, ax = plt.subplots()" counterparts, so they use the same images for comparison

Fixes #6

Type of change

Please delete options that are not relevant.

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

How Has This Been Tested?

Please describe the tests that you ran to verify your changes. Provide instructions so we can reproduce. Please also list any relevant details for your test configuration

• I compared each of the old plots with their new versions, to verify that the updates are sane.

Test Configuration:

• Firmware version: macOS Sequoia 15.3
• Hardware: M1 pro macbook pro
• Toolchain:
• SDK:

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• Any dependent changes have been merged and published in downstream modules

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 94.50%. Comparing base (278a148) to head (92600f0).
Report is 1 commits behind head on master.

❗ There is a different number of reports uploaded between BASE (278a148) and HEAD (92600f0). Click for more details.

HEAD has 24 uploads less than BASE

Flag	BASE (278a148)	HEAD (92600f0)
	36	12

Additional details and impacted files

@@             Coverage Diff             @@
##            master      #27      +/-   ##
===========================================
- Coverage   100.00%   94.50%   -5.50%     
===========================================
  Files           17       17              
  Lines          844      855      +11     
===========================================
- Hits           844      808      -36     
- Misses           0       47      +47     

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[AdamOrmondroyd]

I'm confused why the tests are now showing as uncovered

[AdamOrmondroyd]

@williamjameshandley rolling back codecov has fixed it 🥲

[williamjameshandley]

Many thanks @AdamOrmondroyd

[AdamOrmondroyd]

you're happy to roll back codecov?

[williamjameshandley]

Yes.

[AdamOrmondroyd]

Ah - the tests are skipping in the CI! Codecov V4 was doing its job

[AdamOrmondroyd]

Disappointed, but not surprised