TabsManager.py Added unit tests + documentation

src/myfasthtml/test/matcher.py

@@ -110,6 +110,14 @@ class Regex(AttrPredicate):
     return re.match(self.value, actual) is not None
 
 
+class And(AttrPredicate):
+  def __init__(self, *predicates):
+    super().__init__(predicates)
+  
+  def validate(self, actual):
+    return all(p.validate(actual) for p in self.value)
+
+
 class ChildrenPredicate(Predicate):
   """
   Predicate given as a child of an element.
@@ -791,10 +799,6 @@ def find(ft, expected):
   for element in elements_to_search:
     all_matches.extend(_search_tree(element, expected))
   
-  # Raise error if nothing found
-  if not all_matches:
-    raise AssertionError(f"No element found for '{expected}'")
-  
   return all_matches