问为什么不使用starlettes TestClient在使用pytest-cov的FastAPI上获得100%的覆盖率

EN

from starlette.testclient import TestClient


def test_ping(test_app: TestClient):
    response = test_app.get("/ping")
    assert response.status_code == 200
    assert response.json() == {"environment": "dev", "ping": "pong!", "testing": True}

❯ docker-compose exec web coverage report -m                          
Name                     Stmts   Miss Branch BrPart  Cover   Missing
--------------------------------------------------------------------
app/__init__.py              0      0      0      0   100%
app/api/__init__.py          0      0      0      0   100%
app/api/crud.py             14      0      2      0   100%
app/api/ping.py              7      1      2      1    78%   267, 10->9
app/api/summaries.py        20      0      8      5    82%   12->11, 12->19, 19->18, 19->24, 24->23
app/config.py               12      0      2      1    93%   16->15
app/db_init.py               8      1      0      0    88%   268
app/main.py                 19      2      4      3    78%   270-274, 25->24, 25->31, 31->30
app/models/__init__.py       0      0      0      0   100%
app/models/pydantic.py       5      0      0      0   100%
app/models/tortoise.py       9      1      0      0    89%   11
db_generate_schema.py       13     13      2      0     0%   1-274
--------------------------------------------------------------------
TOTAL                      107     18     20     10    76%