initial tests

tests/test_config.py

@@ -0,0 +1,49 @@
+"""test config"""
+
+import pytest
+from pydantic import ValidationError
+
+from agent.config import Settings
+
+
+def test_settings_with_all_values():
+    """Test Settings loads correctly with all values provided."""
+    settings = Settings(
+        anthropic_api_key="sk-ant-test",
+        model="claude-test",
+        max_tokens=500,
+        safedir="/tmp/test",
+    )
+
+    assert settings.anthropic_api_key == "sk-ant-test"
+    assert settings.model == "claude-test"
+    assert settings.max_tokens == 500
+
+
+def test_settings_defaults():
+    """Test Settings uses defaults for optional values."""
+    settings = Settings(
+        anthropic_api_key="sk-ant-test"  # Only required field
+    )
+
+    # Should use defaults
+    assert settings.model == "claude-sonnet-4-5-20250929"
+    assert settings.max_tokens == 500
+
+
+def test_settings_missing_required_field():
+    """Test Settings raises error when required field is missing."""
+    with pytest.raises(ValidationError) as exc_info:
+        Settings(_env_file=None)  # Missing anthropic_api_key
+
+    # Verify the error mentions the missing field
+    assert "anthropic_api_key" in str(exc_info.value)
+
+
+def test_settings_type_validation():
+    """Test Settings validates types correctly."""
+    with pytest.raises(ValidationError):
+        Settings(
+            anthropic_api_key="sk-ant-test",
+            max_tokens="not-a-number",  # Should be int
+        )