Add tests for mixed number in KAS

[handeyeco]

Summary:

This is a failed attempt at LEMS-2198, but I want to keep the tests to help the next person who tries.

[khan-actions-bot]

Gerald

Required Reviewers

• @Khan/perseus for changes to .changeset/gentle-dingos-explain.md, packages/kas/src/__tests__/evaluating.test.ts, packages/kas/src/__tests__/parsing.test.ts

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[github-actions]

Size Change: +64 B (+0.01%)

Total Size: 856 kB

Filename	Size	Change
packages/perseus-editor/dist/es/index.js	277 kB	+770 B (+0.28%)
packages/perseus/dist/es/index.js	414 kB	-706 B (-0.17%)

ℹ️ View Unchanged

Filename	Size
packages/kas/dist/es/index.js	38.3 kB
packages/keypad-context/dist/es/index.js	760 B
packages/kmath/dist/es/index.js	4.27 kB
packages/math-input/dist/es/index.js	77.7 kB
packages/math-input/dist/es/strings.js	1.79 kB
packages/perseus-core/dist/es/index.js	1.48 kB
packages/perseus-linter/dist/es/index.js	21.8 kB
packages/perseus/dist/es/strings.js	3.29 kB
packages/pure-markdown/dist/es/index.js	3.67 kB
packages/simple-markdown/dist/es/index.js	12.4 kB

_{compressed-size-action}

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 70.96%. Comparing base (6db145f) to head (a5cc8ce).
Report is 10 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1507      +/-   ##
==========================================
+ Coverage   70.07%   70.96%   +0.88%     
==========================================
  Files         515      519       +4     
  Lines      106234   106272      +38     
  Branches     7643    10942    +3299     
==========================================
+ Hits        74447    75412     +965     
+ Misses      31602    30860     -742     
+ Partials      185        0     -185     

see 157 files with indirect coverage changes

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[github-actions]

npm Snapshot: Published

Good news!! We've packaged up the latest commit from this PR (a5cc8ce) and published it to npm. You
can install it using the tag PR1507.

Example:

yarn add @khanacademy/perseus@PR1507

If you are working in Khan Academy's webapp, you can run:

./dev/tools/bump_perseus_version.sh -t PR1507

[kevinb-khan]

Changes seem reasonable, but it looks like there's a few more test cases that could be added for this change.

[SonicScrewdriver]

Love seeing more tests, and thank you for calling out the TODO's with great comments. It really helped me quickly get context on the issue when coming in blind. This should definitely help with LEMS-2198!