⚙️ Record and show test coverage contexts (what test covers which line) (#11518)

Co-authored-by: Sebastián Ramírez <tiangolo@gmail.com>

pyproject.toml

@@ -184,6 +184,7 @@ source = [
     "fastapi"
 ]
 context = '${CONTEXT}'
+dynamic_context = "test_function"
 omit = [
     "docs_src/response_model/tutorial003_04.py",
     "docs_src/response_model/tutorial003_04_py310.py",

scripts/test-cov-html.sh

@@ -6,4 +6,4 @@ set -x
 bash scripts/test.sh ${@}
 coverage combine
 coverage report --show-missing
-coverage html
+coverage html --show-contexts