feat: q to bool (add edge case tests, update changelog)

Author: VladislavYar

CHANGELOG.rst

@@ -17,6 +17,7 @@ Added
 - ``QuerySet.contains()`` method to check if an object exists in a queryset.
 - Added comprehensive EXPLAIN support for MySQL and PostgreSQL.
 - Built-in ``DomainNameValidator``, ``URLValidator``, and ``EmailValidator`` classes for common validation patterns. (#2162)
+- ``Q.__bool__()`` so ``Q`` objects with no filters/children (including nested empty ``Q`` children) are falsy.
 
 Fixed
 ^^^^^

tests/test_q.py

@@ -21,13 +21,18 @@ def test_q_basic():
 
 def test_q_to_bool():
     q = Q(row="data")
+    q_negative = ~q
     q_empty = Q()
     q_children = Q(Q(row="data"), Q(row="data"))
     q_children_empty = Q(Q(), Q())
+    q_children_empty_join_type_or = Q(Q(), Q(), join_type="OR")
     assert bool(q) is True
+    assert bool(q_negative) is True
+    assert bool(q_negative) is True
     assert bool(q_empty) is False
     assert bool(q_children) is True
     assert bool(q_children_empty) is False
+    assert bool(q_children_empty_join_type_or) is False
 
 
 def test_q_compound():

tortoise/expressions.py

@@ -327,7 +327,9 @@ def __eq__(self, other: object) -> bool:
         )
 
     def __bool__(self) -> bool:
-        return any((self.filters, *(children for children in self.children)))
+        if self.filters:
+            return True
+        return any(self.children)
 
     def negate(self) -> None:
         """