Increase coverage

tests/test_hooks.py

@@ -111,17 +111,17 @@ def test_hook_in_parent_class(mocker):
     class A:
         @classmethod
         def __pre_deserialize__(cls, d):
-            return d
+            return d  # pragma no cover
 
         @classmethod
         def __post_deserialize__(cls, obj):
-            return obj
+            return obj  # pragma no cover
 
         def __pre_serialize__(self):
-            return self
+            return self  # pragma no cover
 
         def __post_serialize__(self, d):
-            return d
+            return d  # pragma no cover
 
     @dataclass
     class B(A, DataClassDictMixin):

tests/test_meta.py

@@ -10,6 +10,7 @@
     is_generic,
     is_init_var,
 )
+from mashumaro.serializer.base.metaprogramming import CodeBuilder
 
 
 def test_is_generic_unsupported_python():
@@ -77,3 +78,8 @@ def foobar(self):
     assert get_class_that_define_method("foo", B) == A
     assert get_class_that_define_method("bar", B) == A
     assert get_class_that_define_method("foobar", B) == B
+
+
+def test_get_unknown_declared_hook():
+    builder = CodeBuilder(object)
+    assert builder.get_declared_hook("unknown_name") is None