diff --git a/nodes/test/mocks/chromadb/__init__.py b/nodes/test/mocks/chromadb/__init__.py
index e3260420f..ca8c11c21 100644
--- a/nodes/test/mocks/chromadb/__init__.py
+++ b/nodes/test/mocks/chromadb/__init__.py
@@ -150,7 +150,7 @@ def get(
         items = list(self._storage.items())
 
         # Filter by ids if provided
-        if ids:
+        if ids is not None:
             items = [(id, data) for id, data in items if id in ids]
 
         count = 0
@@ -214,7 +214,7 @@ def add(
 
     def delete(self, ids: List[str] = None, where: Optional[Dict] = None):
         """Delete items from the collection."""
-        if ids:
+        if ids is not None:
             for id in ids:
                 if id in self._storage:
                     del self._storage[id]
@@ -228,7 +228,7 @@ def delete(self, ids: List[str] = None, where: Optional[Dict] = None):
 
     def update(self, ids: List[str] = None, where: Optional[Dict] = None, new_metadata: Dict = None):
         """Update items in the collection."""
-        if ids:
+        if ids is not None:
             for id in ids:
                 if id in self._storage and new_metadata:
                     self._storage[id]['metadata'].update(new_metadata)
diff --git a/nodes/test/mocks/psycopg2/__init__.py b/nodes/test/mocks/psycopg2/__init__.py
index 054d64667..6f3597e51 100644
--- a/nodes/test/mocks/psycopg2/__init__.py
+++ b/nodes/test/mocks/psycopg2/__init__.py
@@ -154,7 +154,7 @@ def _handle_select_query(self, query: str, params: Tuple):
 
         # Apply LIMIT
         limit = self._extract_limit(query, params)
-        if limit:
+        if limit is not None:
             results = results[:limit]
 
         self._results = results
@@ -182,7 +182,7 @@ def _handle_semantic_search(self, query: str, params: Tuple):
                     query_vector = p.tolist()
                 elif isinstance(p, (list, tuple)) and len(p) > 3:
                     query_vector = list(p)
-                elif isinstance(p, int) and p < 1000:
+                elif isinstance(p, int) and not isinstance(p, bool) and p < 1000:
                     limit = p
                 else:
                     filter_params.append(p)
@@ -318,7 +318,7 @@ def _extract_limit(self, query: str, params: Tuple) -> Optional[int]:
         if 'limit' in query.lower() and params:
             # Last param is often the limit
             for p in reversed(params):
-                if isinstance(p, int) and p < 10000:
+                if isinstance(p, int) and not isinstance(p, bool) and p < 10000:
                     return p
         return None
 
@@ -331,7 +331,7 @@ def _matches_where_params(self, data: Dict, params: List) -> bool:
         """Check if data matches filter parameters."""
         # Check isDeleted
         is_deleted = data.get('isdeleted', False)
-        if False in params and is_deleted:
+        if any(p is False for p in params) and is_deleted:
             return False
         return True
 
diff --git a/nodes/test/mocks/weaviate/__init__.py b/nodes/test/mocks/weaviate/__init__.py
index 6c6d44d4e..49cfcea22 100644
--- a/nodes/test/mocks/weaviate/__init__.py
+++ b/nodes/test/mocks/weaviate/__init__.py
@@ -133,7 +133,7 @@ def matches(self, properties: Dict[str, Any]) -> bool:
             elif op == 'like':
                 # Simple wildcard matching
                 pattern = value.replace('*', '')
-                results.append(pattern.lower() in str(prop_value).lower() if prop_value else False)
+                results.append(pattern.lower() in str(prop_value).lower() if prop_value is not None else False)
             elif op == 'greater_or_equal':
                 results.append(prop_value >= value if prop_value is not None else False)
             elif op == 'less_or_equal':