Some tests fail if there are no AWS credentials

Describe the bug

Several tests fail with botocore.exceptions.ConnectTimeoutError: Connect timeout on endpoint URL: "http://169.254.169.254/latest/api/token" if I don’t provide AWS credentials. Specifically, with environment variable AWS_CONFIG_FILE=/dev/null some tests fail, and AWS_CONFIG_FILE=/my/aws/config makes all tests pass.

On tag 2.2.0, only test_can_delete_urlencoded_object fails, regardless of the value of $AWS_CONFIG_FILE. That test is known to be broken (https://github.com/aio-libs/aiobotocore/commit/643d041fcebb3f3867950bfb689493d394995246).

Here is the complete log, including commands to reproduce and outputs: log.txt

Checklist

• I have reproduced in environment where pip check passes without errors - pipenv check reports some warnings about security issues in out-dated packages.
• I have provided pip freeze results - I include results from pipenv graph instead
• I have provided sample code or detailed way to reproduce
• I have tried the same code in botocore to ensure this is an aiobotocore specific issue
• I have tried similar code in aiohttp to ensure this is is an aiobotocore specific issue
• I have checked the latest and older versions of aiobotocore/aiohttp/python to see if this is a regression / injection

pip freeze results I included results from pipenv graph in the attached log

Environment:

• Python Version: 3.10
• OS name and version: Arch Linux up-to-date

Additional context I’m trying to upgrade the Arch Linux package python-aiobotocore. For version 2.2.0 all tests pass with the latest moto, while tests fail with similar botocore.exceptions.ConnectTimeoutError exceptions for newer versions. How dependencies are installed and tests are run are quite different from steps listed here, while I don’t think that makes a difference.

[tomag]

If you’re running localstack (or any of the kind) and don’t want your tests to try and get credentials from AWS, try -

1. set the environment variable AWS_EC2_METADATA_DISABLED = true
2. aws_secret_access_key=test, aws_access_key_id=test (or anything else)

[thehesiod]

thanks, will look when I get a chance, but also open to PRs 😃