case_sensitive not working for InitSettingsSource

[xbeastx]

case_sensitive not working for InitSettingsSource and for all derived classes (YamlConfigSettingsSource/TomlConfigSettingsSource/JsonConfigSettingsSource).

But it works for EnvSettingsSource and all derived.

from pydantic_settings import BaseSettings, SettingsConfigDict


class Settings(BaseSettings):
    model_config = SettingsConfigDict(case_sensitive=False, extra="allow")

    test: str = "default"


settings = Settings(TeSt="override")
print(settings.model_dump())
assert settings.model_dump() == {"test": "override"}

[hramezani]

Thanks @xbeastx for reporting this. Yes, you are right.

It would be great if you open a PR and update the docs.

[Shindora]

I pushed a PR https://github.com/pydantic/pydantic-settings/pull/609 here