Updated README.md.

Added other TestableControls

README.md

@@ -14,8 +14,9 @@ A utility library designed to simplify the development of FastHtml applications
 - **Dynamic HTML with HTMX**: Simplify dynamic interaction using attributes like `hx-post` and custom routes like
   `/commands`.
 - **Command management**: Write server-side logic in Python while abstracting the complexities of HTMX.
+- **Binding management**: Mechanism to bind two html element together.
 - **Control helpers**: Easily create reusable components like buttons.
-- **Predefined Pages (Roadmap)**: Include common pages like login, user management, and customizable dashboards.
+- **Login Pages**: Include common pages for login, user management, and customizable dashboards.
 
 > _**Note:** Support for state persistence is currently under construction._
 
@@ -57,7 +58,7 @@ if __name__ == "__main__":
 
 ```
 
-### Button with a Command
+### Use Commands
 
 ```python
 from fasthtml import serve
@@ -93,6 +94,23 @@ if __name__ == "__main__":
 
 ---
 
+### Bind components
+
+```python
+@dataclass
+class Data:
+  value: str = "Hello World"
+  checked: bool = False
+
+# Binds an Input with a label
+mk.mk(Input(name="input_name"), binding=Binding(data, attr="value").htmx(trigger="input changed")),
+mk.mk(Label("Text"), binding=Binding(data, attr="value")),
+
+# Binds a checkbox with a labl
+mk.mk(Input(name="checked_name", type="checkbox"), binding=Binding(data, attr="checked")),
+mk.mk(Label("Text"), binding=Binding(data, attr="checked")),
+```
+
 ## Planned Features (Roadmap)
 
 ### Predefined Pages
@@ -148,6 +166,655 @@ Use the `get_htmx_params()` method to directly integrate commands into HTML comp
 
 ---
 
+## Testing
+
+### TestableElements
+
+#### TestableTextarea
+
+**Use case:** Multi-line text input
+
+**Methods:**
+
+- `send(value)` - Set the textarea value
+- `append(text)` - Append text to current value
+- `clear()` - Clear the textarea
+
+**Example:**
+
+```python
+def test_textarea_binding(user, rt):
+  @rt("/")
+  def index():
+    data = Data("Initial text")
+    textarea = Textarea(name="message")
+    label = Label()
+    
+    mk.manage_binding(textarea, Binding(data))
+    mk.manage_binding(label, Binding(data))
+    
+    return textarea, label
+  
+  user.open("/")
+  textarea = user.find_element("textarea")
+  
+  textarea.send("New message")
+  user.should_see("New message")
+  
+  textarea.append("\nMore text")
+  user.should_see("New message\nMore text")
+  
+  textarea.clear()
+  user.should_see("")
+```
+
+#### TestableSelect
+
+**Use case:** Dropdown selection
+
+**Properties:**
+
+- `is_multiple` - Check if multiple selection is enabled
+- `options` - List of available options
+
+**Methods:**
+
+- `select(value)` - Select option by value
+- `select_by_text(text)` - Select option by visible text
+- `deselect(value)` - Deselect option (multiple select only)
+
+**Example (Single Select):**
+
+```python
+def test_select_binding(user, rt):
+  @rt("/")
+  def index():
+    data = Data("option1")
+    select = Select(
+      Option("First", value="option1"),
+      Option("Second", value="option2"),
+      Option("Third", value="option3"),
+      name="choice"
+    )
+    label = Label()
+    
+    mk.manage_binding(select, Binding(data))
+    mk.manage_binding(label, Binding(data))
+    
+    return select, label
+  
+  user.open("/")
+  select_elt = user.find_element("select")
+  
+  select_elt.select("option2")
+  user.should_see("option2")
+  
+  select_elt.select_by_text("Third")
+  user.should_see("option3")
+```
+
+**Example (Multiple Select):**
+
+```python
+def test_multiple_select_binding(user, rt):
+  @rt("/")
+  def index():
+    data = ListData(["option1"])
+    select = Select(
+      Option("First", value="option1"),
+      Option("Second", value="option2"),
+      Option("Third", value="option3"),
+      name="choices",
+      multiple=True
+    )
+    label = Label()
+    
+    mk.manage_binding(select, Binding(data))
+    mk.manage_binding(label, Binding(data))
+    
+    return select, label
+  
+  user.open("/")
+  select_elt = user.find_element("select")
+  
+  select_elt.select("option2")
+  user.should_see("['option1', 'option2']")
+  
+  select_elt.deselect("option1")
+  user.should_see("['option2']")
+```
+
+#### TestableRange
+
+**Use case:** Slider input
+
+**Properties:**
+
+- `min_value` - Minimum value
+- `max_value` - Maximum value
+- `step` - Step increment
+
+**Methods:**
+
+- `set(value)` - Set slider to specific value (auto-clamped)
+- `increase()` - Increase by one step
+- `decrease()` - Decrease by one step
+
+**Example:**
+
+```python
+def test_range_binding(user, rt):
+  @rt("/")
+  def index():
+    data = NumericData(50)
+    range_input = Input(
+      type="range",
+      name="volume",
+      min="0",
+      max="100",
+      step="10",
+      value="50"
+    )
+    label = Label()
+    
+    mk.manage_binding(range_input, Binding(data))
+    mk.manage_binding(label, Binding(data))
+    
+    return range_input, label
+  
+  user.open("/")
+  slider = user.find_element("input[type='range']")
+  
+  slider.set(75)
+  user.should_see("75")
+  
+  slider.increase()
+  user.should_see("85")
+  
+  slider.decrease()
+  user.should_see("75")
+```
+
+#### TestableRadio
+
+**Use case:** Radio button (mutually exclusive options)
+
+**Properties:**
+
+- `radio_value` - The value attribute of this radio
+- `is_checked` - Check if this radio is selected
+
+**Methods:**
+
+- `select()` - Select this radio button
+
+**Example:**
+
+```python
+def test_radio_binding(user, rt):
+  @rt("/")
+  def index():
+    data = Data("option1")
+    
+    radio1 = Input(type="radio", name="choice", value="option1", checked=True)
+    radio2 = Input(type="radio", name="choice", value="option2")
+    radio3 = Input(type="radio", name="choice", value="option3")
+    label = Label()
+    
+    mk.manage_binding(radio1, Binding(data))
+    mk.manage_binding(radio2, Binding(data))
+    mk.manage_binding(radio3, Binding(data))
+    mk.manage_binding(label, Binding(data))
+    
+    return radio1, radio2, radio3, label
+  
+  user.open("/")
+  
+  radio2 = user.find_element("input[value='option2']")
+  radio2.select()
+  user.should_see("option2")
+  
+  radio3 = user.find_element("input[value='option3']")
+  radio3.select()
+  user.should_see("option3")
+```
+
+#### TestableButton
+
+**Use case:** Clickable button with HTMX
+
+**Properties:**
+
+- `text` - Visible text of the button
+
+**Methods:**
+
+- `click()` - Click the button (triggers HTMX if configured)
+
+**Example:**
+
+```python
+def test_button_binding(user, rt):
+  @rt("/")
+  def index():
+    data = Data("initial")
+    button = Button(
+      "Click me",
+      hx_post="/update",
+      hx_vals='{"action": "clicked"}'
+    )
+    label = Label()
+    
+    mk.manage_binding(button, Binding(data))
+    mk.manage_binding(label, Binding(data))
+    
+    return button, label
+  
+  @rt("/update")
+  def update(action: str):
+    data = Data("updated")
+    label = Label()
+    mk.manage_binding(label, Binding(data))
+    return label
+  
+  user.open("/")
+  
+  button = user.find_element("button")
+  button.click()
+  user.should_see("updated")
+```
+
+#### TestableDatalist
+
+**Use case:** Input with autocomplete suggestions (combobox)
+
+**Properties:**
+
+- `suggestions` - List of available suggestions
+
+**Methods:**
+
+- `send(value)` - Set input value (any value, not restricted to suggestions)
+- `select_suggestion(value)` - Select a value from suggestions
+
+**Example:**
+
+```python
+def test_datalist_binding(user, rt):
+  @rt("/")
+  def index():
+    data = Data("")
+    
+    datalist = Datalist(
+      Option(value="apple"),
+      Option(value="banana"),
+      Option(value="cherry"),
+      id="fruits"
+    )
+    input_elt = Input(name="fruit", list="fruits")
+    label = Label()
+    
+    mk.manage_binding(input_elt, Binding(data))
+    mk.manage_binding(label, Binding(data))
+    
+    return input_elt, datalist, label
+  
+  user.open("/")
+  
+  input_with_list = user.find_element("input[list='fruits']")
+  
+  # Free text input
+  input_with_list.send("mango")
+  user.should_see("mango")
+  
+  # Select from suggestions
+  input_with_list.select_suggestion("banana")
+  user.should_see("banana")
+```
+
+## CSS Selectors for Finding Elements
+
+When using `user.find_element()`, use these selectors:
+
+| Component      | Selector Example                                       |
+|----------------|--------------------------------------------------------|
+| Input (text)   | `"input[name='field_name']"` or `"input[type='text']"` |
+| Checkbox       | `"input[type='checkbox']"`                             |
+| Radio          | `"input[type='radio']"` or `"input[value='option1']"`  |
+| Range          | `"input[type='range']"`                                |
+| Textarea       | `"textarea"` or `"textarea[name='field_name']"`        |
+| Select         | `"select"` or `"select[name='field_name']"`            |
+| Button         | `"button"` or `"button.primary"`                       |
+| Datalist Input | `"input[list='datalist_id']"`                          |
+
+## Binding
+
+### Overview
+
+This package contains everything needed to implement a complete binding system for FastHTML components.
+
+### Fully Supported Components Summary
+
+| Component         | Testable Class   | Binding Support |
+|-------------------|------------------|-----------------|
+| Input (text)      | TestableInput    | ✅               |
+| Checkbox          | TestableCheckbox | ✅               |
+| Textarea          | TestableTextarea | ✅               |
+| Select (single)   | TestableSelect   | ✅               |
+| Select (multiple) | TestableSelect   | ✅               |
+| Range (slider)    | TestableRange    | ✅               |
+| Radio buttons     | TestableRadio    | ✅               |
+| Button            | TestableButton   | ✅               |
+| Input + Datalist  | TestableDatalist | ✅               |
+
+### Supported Components
+
+#### 1. Input (Text)
+
+```python
+# Methods
+input.send(value)
+
+# Binding modes
+- ValueChange(default)
+- Text
+updates
+trigger
+data
+changes
+```
+
+#### 2. Checkbox
+
+```python
+# Methods
+checkbox.check()
+checkbox.uncheck()
+checkbox.toggle()
+
+# Binding modes
+- AttributePresence
+- Boolean
+data
+binding
+```
+
+#### 3. Textarea
+
+```python
+# Methods
+textarea.send(value)
+textarea.append(text)
+textarea.clear()
+
+# Binding modes
+- ValueChange
+- Multi - line
+text
+support
+```
+
+#### 4. Select (Single)
+
+```python
+# Methods
+select.select(value)
+select.select_by_text(text)
+
+# Properties
+select.options  # List of available options
+select.is_multiple  # False for single select
+
+# Binding modes
+- ValueChange
+- String
+value
+binding
+```
+
+#### 5. Select (Multiple)
+
+```python
+# Methods
+select.select(value)
+select.deselect(value)
+select.select_by_text(text)
+
+# Properties
+select.options
+select.is_multiple  # True for multiple select
+
+# Binding modes
+- ValueChange
+- List
+data
+binding
+```
+
+#### 6. Range (Slider)
+
+```python
+# Methods
+range.set(value)  # Auto-clamps to min/max
+range.increase()
+range.decrease()
+
+# Properties
+range.min_value
+range.max_value
+range.step
+
+# Binding modes
+- ValueChange
+- Numeric
+data
+binding
+```
+
+#### 7. Radio Buttons
+
+```python
+# Methods
+radio.select()
+
+# Properties
+radio.radio_value  # Value attribute
+radio.is_checked
+
+# Binding modes
+- ValueChange
+- String
+value
+binding
+- Mutually
+exclusive
+group
+behavior
+```
+
+#### 8. Button
+
+```python
+# Methods
+button.click()
+
+# Properties
+button.text  # Visible button text
+
+# Binding modes
+- Triggers
+HTMX
+requests
+- Can
+update
+bindings
+via
+server
+response
+```
+
+#### 9. Input + Datalist (Combobox)
+
+```python
+# Methods
+datalist.send(value)  # Any value
+datalist.select_suggestion(value)  # From suggestions
+
+# Properties
+datalist.suggestions  # Available options
+
+# Binding modes
+- ValueChange
+- Hybrid: free
+text + suggestions
+```
+
+### Architecture Overview
+
+#### Three-Phase Binding Lifecycle
+
+```python
+# Phase 1: Create (inactive)
+binding = Binding(data, "value")
+
+# Phase 2: Configure + Activate
+binding.bind_ft(element, name="input", attr="value")
+
+# Phase 3: Deactivate (cleanup)
+binding.deactivate()
+```
+
+#### Data Flow
+
+```
+User Input → HTMX Component → HTMX Request → Binding.update()
+                                                       ↓
+                                             setattr(data, attr, value)
+                                                       ↓
+                                                Observable triggers
+                                                       ↓
+                                                Binding.notify()
+                                                       ↓
+                                              Update all bound UI elements
+```
+
+### Quick Reference
+
+#### Creating a Binding
+
+```python
+# Simple binding
+binding = Binding(data, "value").bind_ft(
+  Input(name="input"),
+  name="input",
+  attr="value"
+)
+
+# With detection and update modes
+binding = Binding(data, "checked").bind_ft(
+  Input(type="checkbox", name="check"),
+  name="check",
+  attr="checked",
+  detection_mode=DetectionMode.AttributePresence,
+  update_mode=UpdateMode.AttributePresence
+)
+
+# With data converter
+binding = Binding(data, "value").bind_ft(
+  Input(type="checkbox", name="check"),
+  name="check",
+  attr="checked",
+  data_converter=BooleanConverter()
+)
+```
+
+#### Testing a Component
+
+```python
+def test_component_binding(user, rt):
+  @rt("/")
+  def index():
+    data = Data("initial")
+    component = Component(name="field")
+    label = Label()
+    
+    mk.manage_binding(component, Binding(data))
+    mk.manage_binding(label, Binding(data))
+    
+    return component, label
+  
+  user.open("/")
+  user.should_see("initial")
+  
+  testable = user.find_element("selector")
+  testable.method("new value")
+  user.should_see("new value")
+```
+
+#### Managing Binding Lifecycle
+
+```python
+# Create
+binding = Binding(data, "value")
+
+# Activate (via bind_ft)
+binding.bind_ft(element, name="field")
+
+# Deactivate
+binding.deactivate()
+
+# Reactivate with new element
+binding.bind_ft(new_element, name="field")
+```
+
+### Pattern 1: Bidirectional Binding
+
+All components support bidirectional binding:
+
+- UI changes update the data object
+- Data object changes update the UI (via Label or other bound components)
+
+```python
+input_elt = Input(name="field")
+label_elt = Label()
+
+mk.manage_binding(input_elt, Binding(data))
+mk.manage_binding(label_elt, Binding(data))
+
+# Change via UI
+testable_input.send("new value")
+# Label automatically updates to show "new value"
+```
+
+### Pattern 2: Multiple Components, Same Data
+
+Multiple different components can bind to the same data:
+
+```python
+input_elt = Input(name="input")
+textarea_elt = Textarea(name="textarea")
+label_elt = Label()
+
+# All bind to the same data object
+mk.manage_binding(input_elt, Binding(data))
+mk.manage_binding(textarea_elt, Binding(data))
+mk.manage_binding(label_elt, Binding(data))
+
+# Changing any component updates all others
+```
+
+### Pattern 3: Component Without Name
+
+Components without a name attribute won't trigger updates but won't crash:
+
+```python
+input_elt = Input()  # No name attribute
+label_elt = Label()
+
+mk.manage_binding(label_elt, Binding(data))
+# Input won't trigger updates, but label will still display data
+```
+
 ## Contributing
 
 We welcome contributions! To get started:
@@ -226,6 +893,41 @@ Predefined login page that provides a UI template ready for integration.
 
 No custom exceptions defined yet. (Placeholder for future use.)
 
+## Troubleshooting
+
+### Issue: "No element found matching selector"
+
+**Cause:** Incorrect CSS selector or element not in DOM
+
+**Solution:** Check the HTML output and adjust selector
+
+```python
+# Debug: Print the HTML
+print(user.get_content())
+
+# Try different selectors
+user.find_element("textarea")
+user.find_element("textarea[name='message']")
+```
+
+### Issue: TestableControl has no attribute 'send'
+
+**Cause:** Wrong testable class returned by factory
+
+**Solution:** Verify factory method is updated correctly
+
+### Issue: AttributeError on TestableTextarea
+
+**Cause:** Class not properly inheriting from TestableControl
+
+**Solution:** Check class hierarchy and imports
+
+### Issue: Select options not found
+
+**Cause:** `_update_fields()` not parsing select correctly
+
+**Solution:** Verify TestableElement properly parses select/option tags
+
 ## Relase History
 
 * 0.1.0 : First release

src/myfasthtml/test/testclient.py

@@ -836,6 +836,452 @@ class TestableCheckbox(TestableControl):
     return self._send_value()
 
 
+class TestableTextarea(TestableControl):
+  """
+  Represents a textarea element that can be interacted with in tests.
+
+  Textareas are similar to text inputs but support multi-line text.
+  """
+  
+  def __init__(self, client, source):
+    """
+    Initialize a testable textarea.
+
+    Args:
+        client: The MyTestClient instance.
+        source: The source HTML or BeautifulSoup Tag.
+    """
+    # Parse as textarea element
+    super().__init__(client, source, "textarea")
+  
+  def send(self, value):
+    """
+    Set the textarea value and trigger HTMX update if configured.
+
+    Args:
+        value: The text value to set (can be multi-line string).
+
+    Returns:
+        Response from HTMX request if applicable, None otherwise.
+    """
+    self.fields[self.name] = value
+    return self._send_value()
+  
+  def append(self, text):
+    """
+    Append text to the current textarea value.
+
+    Args:
+        text: Text to append.
+
+    Returns:
+        Response from HTMX request if applicable, None otherwise.
+    """
+    current_value = self.fields.get(self.name, '')
+    self.fields[self.name] = current_value + text
+    return self._send_value()
+  
+  def clear(self):
+    """
+    Clear the textarea content.
+
+    Returns:
+        Response from HTMX request if applicable, None otherwise.
+    """
+    self.fields[self.name] = ''
+    return self._send_value()
+
+
+class TestableSelect(TestableControl):
+  """
+  Represents a select dropdown element that can be interacted with in tests.
+
+  Supports both single and multiple selection modes.
+  """
+  
+  def __init__(self, client, source):
+    """
+    Initialize a testable select element.
+
+    Args:
+        client: The MyTestClient instance.
+        source: The source HTML or BeautifulSoup Tag.
+    """
+    # Parse as select element
+    super().__init__(client, source, "select")
+    self._is_multiple = self.my_ft.attrs.get('multiple') is not None
+  
+  @property
+  def is_multiple(self):
+    """Check if this is a multiple selection dropdown."""
+    return self._is_multiple
+  
+  @property
+  def options(self):
+    """
+    Get all available options for this select.
+
+    Returns:
+        List of dicts with 'value' and 'text' keys.
+    """
+    return self.select_fields.get(self.name, [])
+  
+  def select(self, value):
+    """
+    Select an option by value.
+
+    Args:
+        value: The value of the option to select (not the text).
+
+    Returns:
+        Response from HTMX request if applicable, None otherwise.
+
+    Raises:
+        ValueError: If the value is not in the available options.
+    """
+    # Validate the value exists in options
+    available_values = [opt['value'] for opt in self.options]
+    if value not in available_values:
+      raise ValueError(
+        f"Value '{value}' not found in select options. "
+        f"Available values: {available_values}"
+      )
+    
+    if self.is_multiple:
+      # For multiple select, value should be a list
+      current = self.fields.get(self.name, [])
+      if not isinstance(current, list):
+        current = [current] if current else []
+      if value not in current:
+        current.append(value)
+      self.fields[self.name] = current
+    else:
+      # For single select, just set the value
+      self.fields[self.name] = value
+    
+    return self._send_value()
+  
+  def select_by_text(self, text):
+    """
+    Select an option by its visible text.
+
+    Args:
+        text: The visible text of the option to select.
+
+    Returns:
+        Response from HTMX request if applicable, None otherwise.
+
+    Raises:
+        ValueError: If the text is not found in options.
+    """
+    # Find the value corresponding to this text
+    for option in self.options:
+      if option['text'] == text:
+        return self.select(option['value'])
+    
+    raise ValueError(
+      f"Option with text '{text}' not found. "
+      f"Available texts: {[opt['text'] for opt in self.options]}"
+    )
+  
+  def deselect(self, value):
+    """
+    Deselect an option (only for multiple selects).
+
+    Args:
+        value: The value of the option to deselect.
+
+    Returns:
+        Response from HTMX request if applicable, None otherwise.
+
+    Raises:
+        ValueError: If called on a non-multiple select.
+    """
+    if not self.is_multiple:
+      raise ValueError("Cannot deselect on a single-select dropdown")
+    
+    current = self.fields.get(self.name, [])
+    if not isinstance(current, list):
+      current = [current] if current else []
+    
+    if value in current:
+      current.remove(value)
+      self.fields[self.name] = current
+      return self._send_value()
+    
+    return None
+
+
+class TestableRange(TestableControl):
+  """
+  Represents a range input (slider) that can be interacted with in tests.
+  """
+  
+  def __init__(self, client, source):
+    """
+    Initialize a testable range input.
+
+    Args:
+        client: The MyTestClient instance.
+        source: The source HTML or BeautifulSoup Tag.
+    """
+    super().__init__(client, source, "input")
+    
+    # Extract min, max, step from attributes
+    self._min = float(self.my_ft.attrs.get('min', 0))
+    self._max = float(self.my_ft.attrs.get('max', 100))
+    self._step = float(self.my_ft.attrs.get('step', 1))
+  
+  @property
+  def min_value(self):
+    """Get the minimum value of the range."""
+    return self._min
+  
+  @property
+  def max_value(self):
+    """Get the maximum value of the range."""
+    return self._max
+  
+  @property
+  def step(self):
+    """Get the step increment of the range."""
+    return self._step
+  
+  def set(self, value):
+    """
+    Set the range value.
+
+    Args:
+        value: Numeric value to set (will be clamped to min/max).
+
+    Returns:
+        Response from HTMX request if applicable, None otherwise.
+    """
+    # Clamp value to valid range
+    value = max(self._min, min(self._max, float(value)))
+    
+    # Round to nearest step
+    value = round((value - self._min) / self._step) * self._step + self._min
+    
+    self.fields[self.name] = value
+    return self._send_value()
+  
+  def increase(self):
+    """
+    Increase the range value by one step.
+
+    Returns:
+        Response from HTMX request if applicable, None otherwise.
+    """
+    current = float(self.fields.get(self.name, self._min))
+    return self.set(current + self._step)
+  
+  def decrease(self):
+    """
+    Decrease the range value by one step.
+
+    Returns:
+        Response from HTMX request if applicable, None otherwise.
+    """
+    current = float(self.fields.get(self.name, self._min))
+    return self.set(current - self._step)
+
+
+class TestableRadio(TestableControl):
+  """
+  Represents a radio button input that can be interacted with in tests.
+
+  Note: Radio buttons with the same name form a group where only one
+  can be selected at a time.
+  """
+  
+  def __init__(self, client, source):
+    """
+    Initialize a testable radio button.
+
+    Args:
+        client: The MyTestClient instance.
+        source: The source HTML or BeautifulSoup Tag.
+    """
+    super().__init__(client, source, "input")
+    self._radio_value = self.my_ft.attrs.get('value', '')
+  
+  @property
+  def radio_value(self):
+    """Get the value attribute of this radio button."""
+    return self._radio_value
+  
+  @property
+  def is_checked(self):
+    """Check if this radio button is currently selected."""
+    return self.fields.get(self.name) == self._radio_value
+  
+  def select(self):
+    """
+    Select this radio button.
+
+    Returns:
+        Response from HTMX request if applicable, None otherwise.
+    """
+    self.fields[self.name] = self._radio_value
+    return self._send_value()
+
+
+class TestableButton(TestableElement):
+  """
+  Represents a button element that can be clicked in tests.
+
+  Buttons can trigger HTMX requests or form submissions.
+  """
+  
+  def __init__(self, client, source):
+    """
+    Initialize a testable button.
+
+    Args:
+        client: The MyTestClient instance.
+        source: The source HTML or BeautifulSoup Tag.
+    """
+    super().__init__(client, source, "button")
+  
+  @property
+  def text(self):
+    """Get the visible text of the button."""
+    return self.element.get_text(strip=True)
+  
+  def click(self):
+    """
+    Click the button and trigger any associated HTMX request.
+
+    Returns:
+        Response from HTMX request if applicable, None otherwise.
+    """
+    if self._support_htmx():
+      return self._send_htmx_request()
+    return None
+
+
+class TestableDatalist(TestableControl):
+  """
+  Represents an input with datalist (autocomplete/combobox) that can be
+  interacted with in tests.
+
+  This is essentially an input that can show suggestions from a datalist.
+  """
+  
+  def __init__(self, client, source):
+    """
+    Initialize a testable input with datalist.
+
+    Args:
+        client: The MyTestClient instance.
+        source: The source HTML or BeautifulSoup Tag.
+    """
+    super().__init__(client, source, "input")
+    
+    # Find associated datalist
+    list_id = self.my_ft.attrs.get('list')
+    self._datalist_options = []
+    
+    if list_id:
+      # Parse the full HTML to find the datalist
+      soup = BeautifulSoup(self.html_fragment, 'html.parser')
+      datalist = soup.find('datalist', id=list_id)
+      
+      if datalist:
+        for option in datalist.find_all('option'):
+          option_value = option.get('value', option.get_text(strip=True))
+          self._datalist_options.append(option_value)
+  
+  @property
+  def suggestions(self):
+    """
+    Get all available suggestions from the datalist.
+
+    Returns:
+        List of suggestion values.
+    """
+    return self._datalist_options
+  
+  def send(self, value):
+    """
+    Set the input value (can be any value, not restricted to suggestions).
+
+    Args:
+        value: The value to set.
+
+    Returns:
+        Response from HTMX request if applicable, None otherwise.
+    """
+    self.fields[self.name] = value
+    return self._send_value()
+  
+  def select_suggestion(self, value):
+    """
+    Select a value from the datalist suggestions.
+
+    Args:
+        value: The suggestion value to select.
+
+    Returns:
+        Response from HTMX request if applicable, None otherwise.
+
+    Raises:
+        ValueError: If the value is not in the suggestions.
+    """
+    if value not in self._datalist_options:
+      raise ValueError(
+        f"Value '{value}' not found in datalist suggestions. "
+        f"Available: {self._datalist_options}"
+      )
+    
+    return self.send(value)
+
+
+# Update the TestableElement factory method
+# This should be added to the MyTestClient._testable_element_factory method
+
+def _testable_element_factory_extended(client, elt):
+  """
+  Extended factory method for creating appropriate Testable* instances.
+
+  This should replace or extend the existing _testable_element_factory method
+  in MyTestClient.
+
+  Args:
+      client: The MyTestClient instance.
+      elt: BeautifulSoup Tag element.
+
+  Returns:
+      Appropriate Testable* instance based on element type.
+  """
+  if elt.name == "input":
+    input_type = elt.get("type", "text").lower()
+    
+    if input_type == "checkbox":
+      return TestableCheckbox(client, elt)
+    elif input_type == "radio":
+      return TestableRadio(client, elt)
+    elif input_type == "range":
+      return TestableRange(client, elt)
+    elif elt.get("list"):  # Input with datalist
+      return TestableDatalist(client, elt)
+    else:
+      return TestableInput(client, elt)
+  
+  elif elt.name == "textarea":
+    return TestableTextarea(client, elt)
+  
+  elif elt.name == "select":
+    return TestableSelect(client, elt)
+  
+  elif elt.name == "button":
+    return TestableButton(client, elt)
+  
+  else:
+    return TestableElement(client, elt, elt.name)
+
+
 #   def get_value(tag):
 #     """Return the current user-facing value of an HTML input-like element."""
 #     if tag.name == 'input':
@@ -1148,10 +1594,38 @@ class MyTestClient:
     return self
   
   def _testable_element_factory(self, elt):
+    """
+    Factory method for creating appropriate Testable* instances.
+
+    Args:
+        elt: BeautifulSoup Tag element.
+
+    Returns:
+        Appropriate Testable* instance based on element type.
+    """
     if elt.name == "input":
-      if elt.get("type") == "checkbox":
+      input_type = elt.get("type", "text").lower()
+      
+      if input_type == "checkbox":
         return TestableCheckbox(self, elt)
+      elif input_type == "radio":
+        return TestableRadio(self, elt)
+      elif input_type == "range":
+        return TestableRange(self, elt)
+      elif elt.get("list"):  # Input with datalist
+        return TestableDatalist(self, elt)
+      else:
         return TestableInput(self, elt)
+    
+    elif elt.name == "textarea":
+      return TestableTextarea(self, elt)
+    
+    elif elt.name == "select":
+      return TestableSelect(self, elt)
+    
+    elif elt.name == "button":
+      return TestableButton(self, elt)
+    
     else:
       return TestableElement(self, elt, elt.name)
   

tests/test_integration.py

@@ -98,3 +98,4 @@ class TestingBindings:
     
     testable_input.uncheck()
     user.should_see("False")
+

tests/testclient/test_teastable_radio.py

@@ -0,0 +1,108 @@
+"""
+Comprehensive binding tests for all bindable FastHTML components.
+
+This test suite covers:
+- Input (text) - already tested
+- Checkbox - already tested
+- Textarea
+- Select (single)
+- Select (multiple)
+- Range (slider)
+- Radio buttons
+- Button
+- Input with Datalist (combobox)
+"""
+
+from dataclasses import dataclass
+
+import pytest
+from fasthtml.components import (
+  Input, Label
+)
+from fasthtml.fastapp import fast_app
+
+from myfasthtml.controls.helpers import mk
+from myfasthtml.core.bindings import Binding
+from myfasthtml.test.testclient import MyTestClient
+
+
+@dataclass
+class Data:
+  value: str = "hello world"
+
+
+@pytest.fixture
+def test_app():
+  test_app, rt = fast_app(default_hdrs=False)
+  return test_app
+
+
+@pytest.fixture
+def rt(test_app):
+  return test_app.route
+
+
+@pytest.fixture
+def user(test_app):
+  return MyTestClient(test_app)
+
+
+class TestBindingRadio:
+  """Tests for binding Radio button components."""
+  
+  def test_i_can_bind_radio_buttons(self, user, rt):
+    """
+    Radio buttons should bind with data.
+    Selecting a radio should update the label.
+    """
+    
+    @rt("/")
+    def index():
+      data = Data("option1")
+      radio1 = Input(type="radio", name="radio_name", value="option1", checked=True)
+      radio2 = Input(type="radio", name="radio_name", value="option2")
+      radio3 = Input(type="radio", name="radio_name", value="option3")
+      label_elt = Label()
+      
+      mk.manage_binding(radio1, Binding(data))
+      mk.manage_binding(radio2, Binding(data))
+      mk.manage_binding(radio3, Binding(data))
+      mk.manage_binding(label_elt, Binding(data))
+      
+      return radio1, radio2, radio3, label_elt
+    
+    user.open("/")
+    user.should_see("option1")
+    
+    # Select second radio
+    testable_radio2 = user.find_element("input[value='option2']")
+    testable_radio2.select()
+    user.should_see("option2")
+    
+    # Select third radio
+    testable_radio3 = user.find_element("input[value='option3']")
+    testable_radio3.select()
+    user.should_see("option3")
+  
+  def test_radio_initial_state(self, user, rt):
+    """
+    Radio buttons should initialize with correct checked state.
+    """
+    
+    @rt("/")
+    def index():
+      data = Data("option2")
+      radio1 = Input(type="radio", name="radio_name", value="option1")
+      radio2 = Input(type="radio", name="radio_name", value="option2", checked=True)
+      radio3 = Input(type="radio", name="radio_name", value="option3")
+      label_elt = Label()
+      
+      mk.manage_binding(radio1, Binding(data))
+      mk.manage_binding(radio2, Binding(data))
+      mk.manage_binding(radio3, Binding(data))
+      mk.manage_binding(label_elt, Binding(data))
+      
+      return radio1, radio2, radio3, label_elt
+    
+    user.open("/")
+    user.should_see("option2")

tests/testclient/test_testable.py

@@ -0,0 +1,146 @@
+"""
+Comprehensive binding tests for all bindable FastHTML components.
+
+This test suite covers:
+- Input (text) - already tested
+- Checkbox - already tested
+- Textarea
+- Select (single)
+- Select (multiple)
+- Range (slider)
+- Radio buttons
+- Button
+- Input with Datalist (combobox)
+"""
+
+from dataclasses import dataclass
+
+from fasthtml.components import (
+  Input, Label, Textarea
+)
+
+from myfasthtml.controls.helpers import mk
+from myfasthtml.core.bindings import Binding
+
+
+@dataclass
+class Data:
+  value: str = "hello world"
+
+
+@dataclass
+class NumericData:
+  value: int = 50
+
+
+@dataclass
+class BoolData:
+  value: bool = True
+
+
+@dataclass
+class ListData:
+  value: list = None
+  
+  def __post_init__(self):
+    if self.value is None:
+      self.value = []
+
+
+class TestBindingEdgeCases:
+  """Tests for edge cases and special scenarios."""
+  
+  def test_multiple_components_bind_to_same_data(self, user, rt):
+    """
+    Multiple different components can bind to the same data object.
+    """
+    
+    @rt("/")
+    def index():
+      data = Data("synchronized")
+      
+      input_elt = Input(name="input_name")
+      textarea_elt = Textarea(name="textarea_name")
+      label_elt = Label()
+      
+      mk.manage_binding(input_elt, Binding(data))
+      mk.manage_binding(textarea_elt, Binding(data))
+      mk.manage_binding(label_elt, Binding(data))
+      
+      return input_elt, textarea_elt, label_elt
+    
+    user.open("/")
+    user.should_see("synchronized")
+    
+    # Change via input
+    testable_input = user.find_element("input")
+    testable_input.send("changed via input")
+    user.should_see("changed via input")
+    
+    # Change via textarea
+    testable_textarea = user.find_element("textarea")
+    testable_textarea.send("changed via textarea")
+    user.should_see("changed via textarea")
+  
+  def test_component_without_name_attribute(self, user, rt):
+    """
+    Component without name attribute should handle gracefully.
+    """
+    
+    @rt("/")
+    def index():
+      data = Data("test")
+      # Input without name - should not crash
+      input_elt = Input()  # No name attribute
+      label_elt = Label()
+      
+      mk.manage_binding(label_elt, Binding(data))
+      
+      return input_elt, label_elt
+    
+    user.open("/")
+    user.should_see("test")
+  
+  def test_binding_with_initial_empty_string(self, user, rt):
+    """
+    Binding should work correctly with empty string initial values.
+    """
+    
+    @rt("/")
+    def index():
+      data = Data("")
+      input_elt = Input(name="input_name")
+      label_elt = Label()
+      
+      mk.manage_binding(input_elt, Binding(data))
+      mk.manage_binding(label_elt, Binding(data))
+      
+      return input_elt, label_elt
+    
+    user.open("/")
+    
+    testable_input = user.find_element("input")
+    testable_input.send("now has value")
+    user.should_see("now has value")
+  
+  def test_binding_with_special_characters(self, user, rt):
+    """
+    Binding should handle special characters correctly.
+    """
+    
+    @rt("/")
+    def index():
+      data = Data("Hello")
+      input_elt = Input(name="input_name")
+      label_elt = Label()
+      
+      mk.manage_binding(input_elt, Binding(data))
+      mk.manage_binding(label_elt, Binding(data))
+      
+      return input_elt, label_elt
+    
+    user.open("/")
+    
+    testable_input = user.find_element("input")
+    testable_input.send("Special: <>&\"'")
+    user.should_see("Special: <>&\"'")

tests/testclient/test_testable_button.py

@@ -0,0 +1,104 @@
+"""
+Comprehensive binding tests for all bindable FastHTML components.
+
+This test suite covers:
+- Input (text) - already tested
+- Checkbox - already tested
+- Textarea
+- Select (single)
+- Select (multiple)
+- Range (slider)
+- Radio buttons
+- Button
+- Input with Datalist (combobox)
+"""
+
+from dataclasses import dataclass
+
+from fasthtml.components import (
+  Label, Button
+)
+
+from myfasthtml.controls.helpers import mk
+from myfasthtml.core.bindings import Binding
+
+
+@dataclass
+class Data:
+  value: str = "hello world"
+
+
+@dataclass
+class NumericData:
+  value: int = 50
+
+
+@dataclass
+class BoolData:
+  value: bool = True
+
+
+@dataclass
+class ListData:
+  value: list = None
+  
+  def __post_init__(self):
+    if self.value is None:
+      self.value = []
+
+
+class TestBindingButton:
+  """Tests for binding Button components."""
+  
+  def test_i_can_click_button_with_binding(self, user, rt):
+    """
+    Clicking a button with HTMX should trigger binding updates.
+    """
+    
+    @rt("/")
+    def index():
+      data = Data("initial")
+      button_elt = Button("Click me", hx_post="/update", hx_vals='{"action": "clicked"}')
+      label_elt = Label()
+      
+      mk.manage_binding(button_elt, Binding(data))
+      mk.manage_binding(label_elt, Binding(data))
+      
+      return button_elt, label_elt
+    
+    @rt("/update")
+    def update(action: str):
+      data = Data("button clicked")
+      label_elt = Label()
+      mk.manage_binding(label_elt, Binding(data))
+      return label_elt
+    
+    user.open("/")
+    user.should_see("initial")
+    
+    testable_button = user.find_element("button")
+    testable_button.click()
+    user.should_see("button clicked")
+  
+  def test_button_without_htmx_does_nothing(self, user, rt):
+    """
+    Button without HTMX should not trigger updates.
+    """
+    
+    @rt("/")
+    def index():
+      data = Data("initial")
+      button_elt = Button("Plain button")  # No HTMX
+      label_elt = Label()
+      
+      mk.manage_binding(button_elt, Binding(data))
+      mk.manage_binding(label_elt, Binding(data))
+      
+      return button_elt, label_elt
+    
+    user.open("/")
+    user.should_see("initial")
+    
+    testable_button = user.find_element("button")
+    result = testable_button.click()
+    assert result is None  # No HTMX, no response

tests/testclient/test_testable_datalist.py

@@ -0,0 +1,124 @@
+"""
+Comprehensive binding tests for all bindable FastHTML components.
+
+This test suite covers:
+- Input (text) - already tested
+- Checkbox - already tested
+- Textarea
+- Select (single)
+- Select (multiple)
+- Range (slider)
+- Radio buttons
+- Button
+- Input with Datalist (combobox)
+"""
+
+from dataclasses import dataclass
+
+from fasthtml.components import (
+  Input, Label, Option, Datalist
+)
+
+from myfasthtml.controls.helpers import mk
+from myfasthtml.core.bindings import Binding
+
+
+@dataclass
+class Data:
+  value: str = "hello world"
+
+
+@dataclass
+class NumericData:
+  value: int = 50
+
+
+@dataclass
+class BoolData:
+  value: bool = True
+
+
+@dataclass
+class ListData:
+  value: list = None
+  
+  def __post_init__(self):
+    if self.value is None:
+      self.value = []
+
+
+class TestBindingDatalist:
+  """Tests for binding Input with Datalist (combobox)."""
+  
+  def test_i_can_bind_input_with_datalist(self, user, rt):
+    """
+    Input with datalist should allow both free text and suggestions.
+    """
+    
+    @rt("/")
+    def index():
+      data = Data("")
+      datalist = Datalist(
+        Option(value="suggestion1"),
+        Option(value="suggestion2"),
+        Option(value="suggestion3"),
+        id="suggestions"
+      )
+      input_elt = Input(
+        name="input_name",
+        list="suggestions"
+      )
+      label_elt = Label()
+      
+      mk.manage_binding(input_elt, Binding(data))
+      mk.manage_binding(label_elt, Binding(data))
+      
+      return input_elt, datalist, label_elt
+    
+    user.open("/")
+    user.should_see("")
+    
+    testable_input = user.find_element("input[list='suggestions']")
+    
+    # Can type free text
+    testable_input.send("custom value")
+    user.should_see("custom value")
+    
+    # Can select from suggestions
+    testable_input.select_suggestion("suggestion2")
+    user.should_see("suggestion2")
+  
+  def test_datalist_suggestions_are_available(self, user, rt):
+    """
+    Datalist suggestions should be accessible for validation.
+    """
+    
+    @rt("/")
+    def index():
+      data = Data("")
+      datalist = Datalist(
+        Option(value="apple"),
+        Option(value="banana"),
+        Option(value="cherry"),
+        id="fruits"
+      )
+      input_elt = Input(
+        name="input_name",
+        list="fruits"
+      )
+      label_elt = Label()
+      
+      mk.manage_binding(input_elt, Binding(data))
+      mk.manage_binding(label_elt, Binding(data))
+      
+      return input_elt, datalist, label_elt
+    
+    user.open("/")
+    
+    testable_input = user.find_element("input[list='fruits']")
+    
+    # Check that suggestions are available
+    suggestions = testable_input.suggestions
+    assert "apple" in suggestions
+    assert "banana" in suggestions
+    assert "cherry" in suggestions

tests/testclient/test_testable_select.py

@@ -0,0 +1,191 @@
+"""
+Comprehensive binding tests for all bindable FastHTML components.
+
+This test suite covers:
+- Input (text) - already tested
+- Checkbox - already tested
+- Textarea
+- Select (single)
+- Select (multiple)
+- Range (slider)
+- Radio buttons
+- Button
+- Input with Datalist (combobox)
+"""
+
+from dataclasses import dataclass
+
+from fasthtml.components import (
+  Label, Select, Option
+)
+
+from myfasthtml.controls.helpers import mk
+from myfasthtml.core.bindings import Binding
+
+
+@dataclass
+class Data:
+  value: str = "hello world"
+
+
+@dataclass
+class NumericData:
+  value: int = 50
+
+
+@dataclass
+class BoolData:
+  value: bool = True
+
+
+@dataclass
+class ListData:
+  value: list = None
+  
+  def __post_init__(self):
+    if self.value is None:
+      self.value = []
+
+
+class TestBindingSelect:
+  """Tests for binding Select components (single selection)."""
+  
+  def test_i_can_bind_select_single(self, user, rt):
+    """
+    Single select should bind with data.
+    Selecting an option should update the label.
+    """
+    
+    @rt("/")
+    def index():
+      data = Data("option1")
+      select_elt = Select(
+        Option("Option 1", value="option1"),
+        Option("Option 2", value="option2"),
+        Option("Option 3", value="option3"),
+        name="select_name"
+      )
+      label_elt = Label()
+      mk.manage_binding(select_elt, Binding(data))
+      mk.manage_binding(label_elt, Binding(data))
+      return select_elt, label_elt
+    
+    user.open("/")
+    user.should_see("option1")
+    
+    testable_select = user.find_element("select")
+    testable_select.select("option2")
+    user.should_see("option2")
+    
+    testable_select.select("option3")
+    user.should_see("option3")
+  
+  def test_i_can_bind_select_by_text(self, user, rt):
+    """
+    Selecting by visible text should work with binding.
+    """
+    
+    @rt("/")
+    def index():
+      data = Data("opt1")
+      select_elt = Select(
+        Option("First Option", value="opt1"),
+        Option("Second Option", value="opt2"),
+        Option("Third Option", value="opt3"),
+        name="select_name"
+      )
+      label_elt = Label()
+      mk.manage_binding(select_elt, Binding(data))
+      mk.manage_binding(label_elt, Binding(data))
+      return select_elt, label_elt
+    
+    user.open("/")
+    user.should_see("opt1")
+    
+    testable_select = user.find_element("select")
+    testable_select.select_by_text("Second Option")
+    user.should_see("opt2")
+  
+  def test_select_with_default_selected_option(self, user, rt):
+    """
+    Select with a pre-selected option should initialize correctly.
+    """
+    
+    @rt("/")
+    def index():
+      data = Data("option2")
+      select_elt = Select(
+        Option("Option 1", value="option1"),
+        Option("Option 2", value="option2", selected=True),
+        Option("Option 3", value="option3"),
+        name="select_name"
+      )
+      label_elt = Label()
+      mk.manage_binding(select_elt, Binding(data))
+      mk.manage_binding(label_elt, Binding(data))
+      return select_elt, label_elt
+    
+    user.open("/")
+    user.should_see("option2")
+
+
+class TestBindingSelectMultiple:
+  """Tests for binding Select components with multiple selection."""
+  
+  def test_i_can_bind_select_multiple(self, user, rt):
+    """
+    Multiple select should bind with list data.
+    Selecting multiple options should update the label.
+    """
+    
+    @rt("/")
+    def index():
+      data = ListData(["option1"])
+      select_elt = Select(
+        Option("Option 1", value="option1"),
+        Option("Option 2", value="option2"),
+        Option("Option 3", value="option3"),
+        name="select_name",
+        multiple=True
+      )
+      label_elt = Label()
+      mk.manage_binding(select_elt, Binding(data))
+      mk.manage_binding(label_elt, Binding(data))
+      return select_elt, label_elt
+    
+    user.open("/")
+    user.should_see("['option1']")
+    
+    testable_select = user.find_element("select")
+    testable_select.select("option2")
+    user.should_see("['option1', 'option2']")
+    
+    testable_select.select("option3")
+    user.should_see("['option1', 'option2', 'option3']")
+  
+  def test_i_can_deselect_from_multiple_select(self, user, rt):
+    """
+    Deselecting options from multiple select should update binding.
+    """
+    
+    @rt("/")
+    def index():
+      data = ListData(["option1", "option2"])
+      select_elt = Select(
+        Option("Option 1", value="option1"),
+        Option("Option 2", value="option2"),
+        Option("Option 3", value="option3"),
+        name="select_name",
+        multiple=True
+      )
+      label_elt = Label()
+      mk.manage_binding(select_elt, Binding(data))
+      mk.manage_binding(label_elt, Binding(data))
+      return select_elt, label_elt
+    
+    user.open("/")
+    user.should_see("['option1', 'option2']")
+    
+    testable_select = user.find_element("select")
+    testable_select.deselect("option1")
+    user.should_see("['option2']")

tests/testclient/test_testable_textarea.py

@@ -0,0 +1,136 @@
+"""
+Comprehensive binding tests for all bindable FastHTML components.
+
+This test suite covers:
+- Input (text) - already tested
+- Checkbox - already tested
+- Textarea
+- Select (single)
+- Select (multiple)
+- Range (slider)
+- Radio buttons
+- Button
+- Input with Datalist (combobox)
+"""
+
+from dataclasses import dataclass
+
+from fasthtml.components import (
+  Label, Textarea
+)
+
+from myfasthtml.controls.helpers import mk
+from myfasthtml.core.bindings import Binding
+
+
+@dataclass
+class Data:
+  value: str = "hello world"
+
+
+@dataclass
+class NumericData:
+  value: int = 50
+
+
+@dataclass
+class BoolData:
+  value: bool = True
+
+
+@dataclass
+class ListData:
+  value: list = None
+  
+  def __post_init__(self):
+    if self.value is None:
+      self.value = []
+
+
+class TestBindingTextarea:
+  """Tests for binding Textarea components."""
+  
+  def test_i_can_bind_textarea(self, user, rt):
+    """
+    Textarea should bind bidirectionally with data.
+    Value changes should update the label.
+    """
+    
+    @rt("/")
+    def index():
+      data = Data("Initial text")
+      textarea_elt = Textarea(name="textarea_name")
+      label_elt = Label()
+      mk.manage_binding(textarea_elt, Binding(data))
+      mk.manage_binding(label_elt, Binding(data))
+      return textarea_elt, label_elt
+    
+    user.open("/")
+    user.should_see("Initial text")
+    
+    testable_textarea = user.find_element("textarea")
+    testable_textarea.send("New multiline\ntext content")
+    user.should_see("New multiline\ntext content")
+  
+  def test_i_can_bind_textarea_with_empty_initial_value(self, user, rt):
+    """
+    Textarea with empty initial value should update correctly.
+    """
+    
+    @rt("/")
+    def index():
+      data = Data("")
+      textarea_elt = Textarea(name="textarea_name")
+      label_elt = Label()
+      mk.manage_binding(textarea_elt, Binding(data))
+      mk.manage_binding(label_elt, Binding(data))
+      return textarea_elt, label_elt
+    
+    user.open("/")
+    user.should_see("")  # Empty initially
+    
+    testable_textarea = user.find_element("textarea")
+    testable_textarea.send("First content")
+    user.should_see("First content")
+  
+  def test_textarea_append_works_with_binding(self, user, rt):
+    """
+    Appending text to textarea should trigger binding update.
+    """
+    
+    @rt("/")
+    def index():
+      data = Data("Start")
+      textarea_elt = Textarea(name="textarea_name")
+      label_elt = Label()
+      mk.manage_binding(textarea_elt, Binding(data))
+      mk.manage_binding(label_elt, Binding(data))
+      return textarea_elt, label_elt
+    
+    user.open("/")
+    user.should_see("Start")
+    
+    testable_textarea = user.find_element("textarea")
+    testable_textarea.append(" + More")
+    user.should_see("Start + More")
+  
+  def test_textarea_clear_works_with_binding(self, user, rt):
+    """
+    Clearing textarea should update binding to empty string.
+    """
+    
+    @rt("/")
+    def index():
+      data = Data("Content to clear")
+      textarea_elt = Textarea(name="textarea_name")
+      label_elt = Label()
+      mk.manage_binding(textarea_elt, Binding(data))
+      mk.manage_binding(label_elt, Binding(data))
+      return textarea_elt, label_elt
+    
+    user.open("/")
+    user.should_see("Content to clear")
+    
+    testable_textarea = user.find_element("textarea")
+    testable_textarea.clear()
+    user.should_not_see("Content to clear")