ClientAssertionCredential constructor fails if kwargs are provided

[ppaglilla]

• Package Name: azure-identity
• Package Version: 1.15.0
• Operating System: Linux 6.1.58+ x86_64 GNU/Linux
• Python Version: 3.11.5 and 3.9.2

Describe the bug
The ClientAssertionCredential constructor accepts the authority and additionally_allowed_tenants arguments through kwargs. However, if any of those arguments are provided, they are incorrectly bubbled up through a super().init(**kwargs) call to GetTokenMixin and abc.ABC. That ultimately makes construction fail with:

super(GetTokenMixin, self).__init__(*args, **kwargs)  # type: ignore
    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
TypeError: object.__init__() takes exactly one argument (the instance to initialize)

To Reproduce

from typing import Callable
from azure.identity import ClientAssertionCredential

tenant_id: str= "TENANT_ID"
client_id: str= "CLIENT_ID"
func: Callable[[], str] = lambda: "TOKEN"

credential: ClientAssertionCredential = ClientAssertionCredential(
    tenant_id=tenant_id,
    client_id=client_id,
    func=func,
    additionally_allowed_tenants=[])

Expected behavior
The ClientAssertionCredential object is built successfully.

Additional context
I'm currently working around this by forcefully inspecting the credential object and injecting the settings as needed.

credential: ClientAssertionCredential = ClientAssertionCredential(
    tenant_id=tenant_id,
    client_id=client_id,
    func=func)

credential._client._additionally_allowed_tenants = []

[xiangyan99]

Thanks for the feedback, we’ll investigate asap.

[xiangyan99]

The fix is merged. It will be available in next release.