I can bind checkbox

src/myfasthtml/test/testclient.py

@@ -20,6 +20,13 @@ verbs = {
 }
 
 
+class DoNotSendCls:
+  pass
+
+
+DoNotSend = DoNotSendCls()
+
+
 class TestableElement:
   """
   Represents an HTML element that can be interacted with in tests.
@@ -802,7 +809,8 @@ class TestableControl(TestableElement):
   
   def _send_value(self):
     if self._input_name and self._support_htmx():
-      return self._send_htmx_request(data={self._input_name: self.value})
+      value = {} if self.value is DoNotSend else {self._input_name: self.value}
+      return self._send_htmx_request(data=value)
     return None
 
 
@@ -824,16 +832,18 @@ class TestableCheckbox(TestableControl):
     return self.fields[self._input_name] == True
   
   def check(self):
-    self.fields[self._input_name] = True
+    self.fields[self._input_name] = "on"
     return self._send_value()
   
   def uncheck(self):
-    self.fields[self._input_name] = False
+    self.fields[self._input_name] = DoNotSend
     return self._send_value()
   
   def toggle(self):
-    self.fields[self._input_name] = not self.fields[self._input_name]
-    return self._send_value()
+    if self.fields[self._input_name] == "on":
+      return self.uncheck()
+    else:
+      return self.check()
 
 
 class TestableTextarea(TestableControl):