Create tests/unit/test_settings.py

tests/unit/test_settings.py

@@ -0,0 +1,89 @@
+from __future__ import annotations
+
+import os
+import pytest
+
+from core.config.settings import Settings, get_settings
+
+
+class TestGetSettings:
+    def test_returns_settings_instance(self, env_full) -> None:
+        result = get_settings()
+        assert isinstance(result, Settings)
+
+    def test_caches_result(self, env_full) -> None:
+        a = get_settings()
+        b = get_settings()
+        assert a is b
+
+    def test_cache_clear_allows_new_instance(self, env_full) -> None:
+        a = get_settings()
+        get_settings.cache_clear()
+        b = get_settings()
+        assert a is not b
+
+
+class TestSettings:
+    def test_defaults(self) -> None:
+        s = Settings(
+            BOT_TOKEN="123456789:AAHdqTcvCH1vGWJxfSeofSAsQK6PALsAWo",
+            OPENAI_API_KEY="sk-test",
+            ADMIN_ID="1",
+        )
+        assert s.PORT == 7860
+        assert s.LOG_LEVEL == "INFO"
+        assert s.LOG_FORMAT == "json"
+        assert s.DEFAULT_PROVIDER == "openai"
+
+    def test_required_fields(self) -> None:
+        s = Settings(
+            BOT_TOKEN="123456789:AAHdqTcvCH1vGWJxfSeofSAsQK6PALsAWo",
+            OPENAI_API_KEY="sk-test",
+            ADMIN_ID="1",
+        )
+        rf = s.required_fields
+        assert "BOT_TOKEN" in rf
+        assert "OPENAI_API_KEY" in rf
+        assert "ADMIN_ID" in rf
+
+    def test_port_validation_low(self) -> None:
+        with pytest.raises(Exception):
+            Settings(
+                BOT_TOKEN="t",
+                OPENAI_API_KEY="k",
+                ADMIN_ID="1",
+                PORT=0,
+            )
+
+    def test_port_validation_high(self) -> None:
+        with pytest.raises(Exception):
+            Settings(
+                BOT_TOKEN="t",
+                OPENAI_API_KEY="k",
+                ADMIN_ID="1",
+                PORT=70000,
+            )
+
+    def test_reads_from_env(self, env_full) -> None:
+        s = get_settings()
+        assert s.BOT_TOKEN == "123456789:AAHdqTcvCH1vGWJxfSeofSAsQK6PALsAWo"
+        assert s.ADMIN_ID == "123456789"
+
+    def test_default_provider_literal(self) -> None:
+        s = Settings(
+            BOT_TOKEN="t",
+            OPENAI_API_KEY="k",
+            ADMIN_ID="1",
+            DEFAULT_PROVIDER="claude",
+        )
+        assert s.DEFAULT_PROVIDER == "claude"
+
+    def test_invalid_default_provider(self) -> None:
+        with pytest.raises(Exception):
+            Settings(
+                BOT_TOKEN="t",
+                OPENAI_API_KEY="k",
+                ADMIN_ID="1",
+                DEFAULT_PROVIDER="invalid_provider",
+            )
+