From a287a40184c2024e0cda1ba9cd6366f00ae9b179 Mon Sep 17 00:00:00 2001
From: Marcelo Trylesinski <marcelotryle@gmail.com>
Date: Fri, 13 Feb 2026 14:10:00 +0100
Subject: [PATCH] docs: add coverage verification instruction to CLAUDE.md
 (#2050)

---
 CLAUDE.md | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/CLAUDE.md b/CLAUDE.md
index d7b17563..0913b7d8 100644
--- a/CLAUDE.md
+++ b/CLAUDE.md
@@ -28,6 +28,9 @@ This document contains critical information about working with this codebase. Fo
    - Bug fixes require regression tests
    - IMPORTANT: The `tests/client/test_client.py` is the most well designed test file. Follow its patterns.
    - IMPORTANT: Be minimal, and focus on E2E tests: Use the `mcp.client.Client` whenever possible.
+   - IMPORTANT: Before pushing, verify 100% branch coverage on changed files by running
+     `uv run --frozen pytest -x` (coverage is configured in `pyproject.toml` with `fail_under = 100`
+     and `branch = true`). If any branch is uncovered, add a test for it before pushing.
 
 Test files mirror the source tree: `src/mcp/client/streamable_http.py` → `tests/client/test_streamable_http.py`
 Add tests to the existing file for that module.