diff --git a/tests/test_flavors.py b/tests/test_flavors.py
index 0b997a7..0a0fdc2 100644
--- a/tests/test_flavors.py
+++ b/tests/test_flavors.py
@@ -1,7 +1,5 @@
 """Tests for the flavors module."""
 
-import pytest
-
 from regex_humanizer.flavors import (
     get_flavor,
     get_supported_flavors,
@@ -13,7 +11,10 @@ from regex_humanizer.flavors import (
 
 
 class TestFlavorRegistry:
+    """Tests for the FlavorRegistry class."""
+
     def test_list_flavors(self):
+        """Test listing all supported flavors."""
         flavors = get_supported_flavors()
         assert "pcre" in flavors
         assert "javascript" in flavors
@@ -21,48 +22,89 @@ class TestFlavorRegistry:
         assert "go" in flavors
 
     def test_get_flavor(self):
+        """Test getting a flavor by name."""
         flavor = get_flavor("pcre")
         assert flavor is not None
         assert flavor.name == "pcre"
 
+    def test_get_invalid_flavor(self):
+        """Test getting an invalid flavor returns None."""
+        flavor = get_flavor("invalid")
+        assert flavor is None
+
     def test_validate_flavor_valid(self):
+        """Test validating a valid flavor."""
         assert validate_flavor("pcre") is True
         assert validate_flavor("javascript") is True
 
+    def test_validate_flavor_invalid(self):
+        """Test validating an invalid flavor."""
+        assert validate_flavor("invalid") is False
+
+    def test_flavor_has_features(self):
+        """Test that flavors have feature support information."""
+        flavor = get_flavor("pcre")
+        assert flavor is not None
+        assert len(flavor.supported_features) > 0
+
 
 class TestDetectFlavor:
+    """Tests for the detect_flavor function."""
+
     def test_detect_pcre_features(self):
+        """Test detecting PCRE-specific features."""
         flavor = detect_flavor(r"(?P<name>pattern)\k<name>")
         assert flavor == "pcre"
 
     def test_detect_js_lookahead(self):
+        """Test detecting JavaScript patterns."""
         flavor = detect_flavor(r"(?=pattern)")
         assert flavor in ("javascript", "pcre")
 
+    def test_detect_go_backslash_k(self):
+        """Test detecting Go patterns."""
+        flavor = detect_flavor(r"\k<name>")
+        assert flavor in ("go", "python", "pcre")
+
     def test_detect_possessive_quantifiers(self):
+        """Test detecting possessive quantifiers."""
         flavor = detect_flavor(r"a++")
         assert flavor == "pcre"
 
 
 class TestFeatureSupport:
+    """Tests for checking feature support."""
+
     def test_check_js_lookbehind(self):
+        """Test that JavaScript doesn't support lookbehind."""
         pattern = r"(?<=pattern)"
         unsupported = check_feature_support(pattern, "javascript")
         assert "lookbehind" in unsupported
 
     def test_check_go_lookbehind(self):
+        """Test that Go doesn't support lookbehind."""
         pattern = r"(?<=pattern)"
         unsupported = check_feature_support(pattern, "go")
         assert "lookbehind" in unsupported
 
     def test_check_js_possessive(self):
+        """Test that JavaScript doesn't support possessive quantifiers."""
         pattern = r"a++"
         unsupported = check_feature_support(pattern, "javascript")
         assert "possessive_quantifiers" in unsupported
 
+    def test_pcre_supports_lookbehind(self):
+        """Test that PCRE supports lookbehind."""
+        pattern = r"(?<=pattern)"
+        unsupported = check_feature_support(pattern, "pcre")
+        assert "lookbehind" not in unsupported
+
 
 class TestCompatibilityWarnings:
+    """Tests for generating compatibility warnings."""
+
     def test_js_lookbehind_warning(self):
+        """Test warning for JavaScript lookbehind."""
         pattern = r"(?<=pattern)"
         warnings = get_compatibility_warnings(pattern, "javascript")
         assert len(warnings) > 0
@@ -70,12 +112,43 @@ class TestCompatibilityWarnings:
         assert "lookbehind" in warning_types
 
     def test_go_backreference_warning(self):
+        """Test warning for Go named backreferences."""
         pattern = r"\k<name>"
         warnings = get_compatibility_warnings(pattern, "go")
         warning_types = [w.feature for w in warnings]
-        assert "named_groups" in warning_types or "backreferences_general" in warning_types
+        assert "named_groups" in warning_types or "backreferences_general" in warning_types or "named_backreferences" in warning_types
 
     def test_pcre_no_warnings(self):
+        """Test that PCRE has no warnings for basic patterns."""
         pattern = r"\w+"
         warnings = get_compatibility_warnings(pattern, "pcre")
         assert len(warnings) == 0
+
+    def test_warning_severity(self):
+        """Test that warnings have proper severity levels."""
+        pattern = r"(?<=pattern)"
+        warnings = get_compatibility_warnings(pattern, "javascript")
+        assert len(warnings) > 0
+        for w in warnings:
+            assert w.severity in ("warning", "error")
+
+
+class TestFlavorAttributes:
+    """Tests for flavor attributes."""
+
+    def test_flavor_display_name(self):
+        """Test that flavors have display names."""
+        flavor = get_flavor("pcre")
+        assert flavor.display_name == "PCRE"
+        flavor = get_flavor("javascript")
+        assert flavor.display_name == "JavaScript"
+
+    def test_flavor_description(self):
+        """Test that flavors have descriptions."""
+        flavor = get_flavor("python")
+        assert len(flavor.description) > 0
+
+    def test_flavor_quirks(self):
+        """Test that flavors have quirk information."""
+        flavor = get_flavor("go")
+        assert len(flavor.quirks) > 0