mirror of https://github.com/tiangolo/fastapi.git
56 lines
1.7 KiB
Python
56 lines
1.7 KiB
Python
import pytest
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from anyio import open_file
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from fastapi import Depends, FastAPI
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from fastapi.testclient import TestClient
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app_reraises = FastAPI()
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app_doesnt_reraise = FastAPI()
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async def get_username_reraises():
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try:
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async with await open_file("/non_existing/path.txt", "r") as f:
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yield await f.read() # pragma: no cover
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except OSError as ex:
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raise RuntimeError("File read error") from ex
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async def get_username_doesnt_reraise():
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try:
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async with await open_file("/path/to/sanchez.txt", "r") as f:
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yield await f.read() # pragma: no cover
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except OSError:
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print("We didn't re-raise, wubba lubba dub dub!")
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@app_reraises.get("/me")
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def get_me_reraises(username: str = Depends(get_username_reraises)):
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return username # pragma: no cover
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@app_doesnt_reraise.get("/me")
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def get_me_doesnt_reraise(username: str = Depends(get_username_doesnt_reraise)):
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return username # pragma: no cover
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client_reraises = TestClient(app_reraises)
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client_doesnt_reraise = TestClient(app_doesnt_reraise)
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@pytest.mark.anyio
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def test_runtime_error_reraises():
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with pytest.raises(RuntimeError) as exc_info:
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client_reraises.get("/me")
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assert str(exc_info.value) == "File something something, wubba lubba dub dub!"
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@pytest.mark.anyio
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def test_runtime_error_doesnt_reraise():
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with pytest.raises(RuntimeError) as exc_info:
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client_doesnt_reraise.get("/me")
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assert str(exc_info.value).startswith(
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"Dependency get_username_doesnt_reraise raised: generator didn't yield. "
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"There's a high chance that this is a dependency with yield that catches an "
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"exception using except, but doesn't raise the exception again."
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)
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