test: add offline fixture coverage for Kattis and USACO (#342)

## Problem

Kattis and USACO had zero offline test coverage — no fixtures, no
conftest
routers, and no entries in the test matrix. The `precision` field and
error
paths were also unverified across all platforms.

## Solution

Add HTML fixtures for both platforms and wire up `httpx.AsyncClient.get`
routers in `conftest.py` following the existing CSES/CodeChef pattern.
Extend the test matrix from 12 to 23 parametrized cases. Add a dedicated
test for the Kattis contest-vs-slug fallback path (verifying
`contest_url`
and `standings_url`), three parametrized metadata error cases, and a
targeted assertion that `extract_precision` returns a non-`None` float
for
problems with floating-point tolerance hints.

Closes #281.
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Barrett Ruth 2026-03-06 16:49:49 -05:00 committed by GitHub
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tests/fixtures/kattis/contests.html vendored Normal file
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<html><body><table>
<tr>
<td><a href="/contests/open2024">Open 2024</a></td>
<td data-timestamp="1711800000">2024-03-30</td>
</tr>
<tr>
<td><a href="/contests/icpc2023">ICPC 2023</a></td>
<td data-timestamp="1698768000">2023-10-31</td>
</tr>
</table></body></html>