chore(test): cover jsx attributes

[exoego]

This PR is going to cover jsx-runtime.ts file which is covered 0% now.

https://app.codecov.io/github/honojs/hono/blob/main/src%2Fjsx%2Fjsx-runtime.ts

The author should do the following, if applicable

• Add tests
• Run tests
• bun run format:fix && bun run lint:fix to format the code
• Add TSDoc/JSDoc to document the code

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 90.52%. Comparing base (394a8f5) to head (d7bf2e2).

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #3452   +/-   ##
=======================================
  Coverage   90.52%   90.52%           
=======================================
  Files         159      159           
  Lines       10179    10179           
  Branches     2843     2815   -28     
=======================================
  Hits         9215     9215           
  Misses        962      962           
  Partials        2        2           

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[exoego]

Hmm, I thought this PR can improve coverage on https://app.codecov.io/gh/honojs/hono/pull/3452/blob/src/jsx/jsx-runtime.ts#L43 but no changes ... 🤔

[usualoma]

Hi @exoego.

Thank you for creating the pull request.

jsxAttr is a function used when Deno's “jsx”: “precompile” is used, and unit tests are run as follows.
https://github.com/usualoma/hono/blob/ebf9ea769bb638f4a12d553ec3ead3f3204a04e3/runtime-tests/deno-jsx/jsx.test.tsx#L114-L166

It would be good if we could reflect the coverage of Deno's runtime-tests, but as you can see from the following pull request, it's not as straightforward as it seems, and it's not currently being refrected.
#3456

[exoego]

Superseded by #3632