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2 changes: 1 addition & 1 deletion flask_jwt_extended/view_decorators.py
Original file line number Diff line number Diff line change
Expand Up @@ -202,7 +202,7 @@ def _decode_jwt_from_headers() -> Tuple[str, None]:
# <HeaderName>: <field> <value>, <field> <value>, etc...
if header_type:
field_values = split(r",\s*", auth_header)
jwt_headers = [s for s in field_values if s.split()[0] == header_type]
jwt_headers = [s for s in field_values if s and s.split()[0] == header_type]
if len(jwt_headers) != 1:
msg = (
f"Missing '{header_type}' type in '{header_name}' header. "
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7 changes: 7 additions & 0 deletions tests/test_view_decorators.py
Original file line number Diff line number Diff line change
Expand Up @@ -253,6 +253,13 @@ def test_jwt_optional_with_no_valid_jwt(app):
assert response.status_code == 422
assert response.get_json() == {"msg": "Not enough segments"}

# Unexpected token
response = test_client.get(url, headers={"Authorization": "Bearer ,,0"})
assert response.status_code == 422
assert response.get_json() == {
"msg": "Bad Authorization header. Expected 'Authorization: Bearer <JWT>'"
}


def test_override_jwt_location(app):
app.config["JWT_TOKEN_LOCATION"] = ["cookies"]
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