Add unit tests (#133)

* Add initial test & add pipeline

* Add very basic YAML config tests

* Add coverage reporting

* Add some webserver & template loading tests

* Add test cases for the helpers

* Implement initial OIDC server tests

* Test codestore & discovery checker

* Test basics of the config flow

* Add test for the HA auth provider

* Cleaned up tests & test injection

tests/conftest.py

@@ -0,0 +1,8 @@
+"""Fixtures for testing."""
+
+import pytest
+
+
+@pytest.fixture(autouse=True)
+def auto_enable_custom_integrations(enable_custom_integrations):
+    yield