I can bind checkbox (needs refactoring)

tests/core/test_bindings.py

@@ -4,7 +4,7 @@ import pytest
 from fasthtml.components import Label, Input
 from myutils.observable import collect_return_values
 
-from myfasthtml.core.bindings import BindingsManager, Binding
+from myfasthtml.core.bindings import BindingsManager, Binding, DetectionMode
 
 
 @dataclass
@@ -94,3 +94,41 @@ def test_i_can_collect_updates_values(data):
   data.value = "another value"
   collected = collect_return_values(data)
   assert collected == [elt]
+
+
+def test_i_can_react_to_value_change(data):
+  elt = Input(name="input_elt", value="hello")
+  binding = Binding(data, ft=elt, ft_name="input_elt", ft_attr="value")
+  
+  res = binding.update({"input_elt": "new value"})
+  
+  assert len(res) == 1
+
+
+def test_i_do_not_react_to_other_value_change(data):
+  elt = Input(name="input_elt", value="hello")
+  binding = Binding(data, ft=elt, ft_name="input_elt", ft_attr="value")
+  
+  res = binding.update({"other_input_elt": "new value"})
+  
+  assert res is None
+
+
+def test_i_can_react_to_attr_presence(data):
+  elt = Input(name="input_elt", type="checkbox")
+  binding = Binding(data, ft=elt, ft_name="input_elt", ft_attr="checked",
+                    detection_mode=DetectionMode.AttributePresence)
+  
+  res = binding.update({"checked": "true"})
+  
+  assert len(res) == 1
+
+
+def test_i_can_react_to_attr_non_presence(data):
+  elt = Input(name="input_elt", type="checkbox")
+  binding = Binding(data, ft=elt, ft_name="input_elt", ft_attr="checked",
+                    detection_mode=DetectionMode.AttributePresence)
+  
+  res = binding.update({})
+  
+  assert len(res) == 1