Simplify tests

tests/config_test.py

@@ -1,22 +1,21 @@
 import pydantic
 import pytest
 
-from kptncook.config import Settings
-from tests.conftest import temp_env
+from tests.conftest import MockSettings
 
 
 def test_config_accepts_mealie_username_password():
-    with temp_env(MEALIE_USERNAME="test", MEALIE_PASSWORD="test", KPTNCOOK_API_KEY="test"):
-        settings = Settings()
+    MockSettings(
+        mealie_username="test", mealie_password="password", kptncook_api_key="test"
+    )
 
 
 def test_config_accepts_mealie_token():
-    with temp_env(MEALIE_API_TOKEN="test", KPTNCOOK_API_KEY="test"):
-        settings = Settings()
+    MockSettings(mealie_api_token="test", kptncook_api_key="test")
+
 
 def test_config_rejects_empty_mealie_auth():
     with pytest.raises(pydantic.ValidationError) as exception_info:
-        with temp_env(KPTNCOOK_API_KEY="test"):
-            settings = Settings()
+        MockSettings(kptncook_api_key="test")
 
-    assert "mealie" in str(exception_info.value)
+    assert "must specify either" in str(exception_info.value)

tests/conftest.py

@@ -1,35 +1,32 @@
-import contextlib
 import json
-import os
 from pathlib import Path
 
 import pytest
+from pydantic_settings import BaseSettings, PydanticBaseSettingsSource
 
 import kptncook.config as config
 
-# make sure settings need be specified explicitly during tests
-if "env_file" in config.Settings.model_config:
-    del config.Settings.model_config["env_file"]
 
+class MockSettings(config.Settings):
+    model_config = config.Settings.model_config
 
-@contextlib.contextmanager
-def temp_env(**environ):
-    original = dict(os.environ)
-    os.environ.update(environ)
-    try:
-        yield
-    finally:
-        os.environ.clear()
-        os.environ.update(original)
+    @classmethod
+    def settings_customise_sources(
+        cls,
+        settings_cls: type[BaseSettings],
+        init_settings: PydanticBaseSettingsSource,
+        env_settings: PydanticBaseSettingsSource,
+        dotenv_settings: PydanticBaseSettingsSource,
+        file_secret_settings: PydanticBaseSettingsSource,
+    ) -> tuple[PydanticBaseSettingsSource, ...]:
+        return (init_settings,)
 
 
 @pytest.fixture(scope="function")
 def test_settings():
-    with temp_env(
-        MEALIE_USERNAME="test", MEALIE_PASSWORD="test", KPTNCOOK_API_KEY="test"
-    ):
-        settings = config.Settings()
-        yield settings
+    return MockSettings(
+        mealie_username="test", mealie_password="password", kptncook_api_key="test"
+    )
 
 
 @pytest.fixture