text: import sys
  from functools import partial
  from typing import Callable, Tuple, Sequence, Optional
  from unittest.mock import MagicMock
  
  import napari
  from qtpy.QtCore import Qt
  from qtpy.QtWidgets import QWidget, QPushButton, QHBoxLayout, QLabel
  from ..selectable_button_list import LabeledSelectableButtonList
  
  
  def test_selectable_button_list_instantiation(qtbot):
      button_1_callack = MagicMock()
      button_2_callback = MagicMock()
      widget = LabeledSelectableButtonList([
          ('button 1', button_1_callack),
          ('button 2', button_2_callback)
      ], label='label')
      widget.show()
      assert isinstance(widget, LabeledSelectableButtonList)
  
  
  def test_selectable_button_list_behaviour(qtbot):
      button_1_callack = MagicMock()
      button_2_callback = MagicMock()
      widget = LabeledSelectableButtonList([
          ('button 1', button_1_callack),
          ('button 2', button_2_callback)
      ], label='label')
  
      widget.show()
      qtbot.addWidget(widget)
  
      qtbot.mouseClick(widget.buttons[0], Qt.LeftButton)
      assert widget.buttons[0].isChecked()
      assert widget.buttons[1].isChecked() is not True
      button_1_callack.assert_called_once()
  
      qtbot.mouseClick(widget.buttons[1], Qt.LeftButton)
      assert widget.buttons[0].isChecked() is not True
      assert widget.buttons[1].isChecked()
      button_2_callback.assert_called_once()
  
      for _ in range(5):
          qtbot.mouseClick(widget.buttons[0], Qt.LeftButton)
          assert widget.buttons[0].isChecked()
          assert widget.buttons[1].isChecked() is not True
  