# ...

def test_sdk_class():
    config = Config(api_url="https://example.com", api_key="hunter2")
    sdk = EComSDK(config)
    assert sdk.api_url == config.api_url
    assert sdk.api_key == config.api_key
```

Follow the same pattern to update the other tests in the `test_sdk.py` file to use the new `Config` model. Replace `sdk = EComSDK(api_url, api_key)` with:

```python filename="tests/test_sdk.py"