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"""
Unit tests for nyx.menu.
"""
import curses
import unittest
import nyx.curses
from nyx.menu import MenuItem, Submenu, RadioMenuItem, RadioGroup, MenuCursor
class Container(object):
value = False
def __nonzero__(self):
return bool(self.value) # for python 2.x
def __bool__(self):
return bool(self.value) # for python 3.x
def action(*args):
IS_CALLED.value = args if args else True
def menu_cursor(*key_inputs):
cursor = MenuCursor(INITIAL_SELECTION)
for key in key_inputs:
cursor.handle_key(nyx.curses.KeyInput(key))
return cursor
def no_op():
pass
IS_CALLED = Container()
TEST_MENU = Submenu('Root Submenu', [
Submenu('Submenu 1', [
MenuItem('Item 1', action, 'selected 1'),
MenuItem('Item 2', action, 'selected 2'),
Submenu('Inner Submenu', [
MenuItem('Item 3', action, 'selected 3'),
]),
Submenu('Empty Submenu', []),
]),
Submenu('Submenu 2', [
MenuItem('Item 4', action, 'selected 1'),
MenuItem('Item 5', action, 'selected 2'),
])
])
INITIAL_SELECTION = TEST_MENU.children[0].children[0]
class TestMenuItem(unittest.TestCase):
def setUp(self):
IS_CALLED.value = False
def test_parameters(self):
menu_item = MenuItem('Test Item', no_op)
self.assertEqual('', menu_item.prefix)
self.assertEqual('Test Item', menu_item.label)
self.assertEqual('', menu_item.suffix)
self.assertEqual(None, menu_item.next)
self.assertEqual(None, menu_item.prev)
self.assertEqual(None, menu_item.parent)
self.assertEqual(menu_item, menu_item.submenu)
def test_selection(self):
menu_item = MenuItem('Test Item', action)
menu_item.select()
self.assertTrue(IS_CALLED)
def test_selection_with_value(self):
menu_item = MenuItem('Test Item', action, 'hi')
menu_item.select()
self.assertEqual(('hi',), IS_CALLED.value)
def test_menu_item_hierarchy(self):
root_submenu = Submenu('Root Submenu')
middle_submenu = Submenu('Middle Submenu')
root_submenu.add(MenuItem('Middle Item 1', no_op))
root_submenu.add(MenuItem('Middle Item 2', no_op))
root_submenu.add(middle_submenu)
bottom_item = MenuItem('Bottom Item', no_op)
middle_submenu.add(bottom_item)
self.assertEqual(middle_submenu, bottom_item.parent)
self.assertEqual(middle_submenu, bottom_item.submenu)
self.assertEqual(bottom_item, bottom_item.next)
self.assertEqual(bottom_item, bottom_item.prev)
self.assertEqual(root_submenu, middle_submenu.parent)
self.assertEqual(middle_submenu, middle_submenu.submenu)
self.assertEqual('Middle Item 1', middle_submenu.next.label)
self.assertEqual('Middle Item 2', middle_submenu.prev.label)
class TestSubmenu(unittest.TestCase):
def test_parameters(self):
menu_item = Submenu('Test Item')
self.assertEqual('', menu_item.prefix)
self.assertEqual('Test Item', menu_item.label)
self.assertEqual(' >', menu_item.suffix)
self.assertEqual(None, menu_item.next)
self.assertEqual(None, menu_item.prev)
self.assertEqual(None, menu_item.parent)
self.assertEqual(menu_item, menu_item.submenu)
self.assertEqual([], menu_item.children)
menu_item = Submenu('Test Item', [
MenuItem('Test Item 1', no_op),
MenuItem('Test Item 2', no_op),
])
self.assertEqual(2, len(menu_item.children))
def test_add(self):
submenu = Submenu('Menu')
item_1 = MenuItem('Test Item 1', no_op)
item_2 = MenuItem('Test Item 2', no_op)
self.assertEqual([], submenu.children)
submenu.add(item_1)
self.assertEqual([item_1], submenu.children)
submenu.add(item_2)
self.assertEqual([item_1, item_2], submenu.children)
def test_add_raises_when_already_in_menu(self):
submenu_1 = Submenu('Menu 1')
submenu_2 = Submenu('Menu 2')
item = MenuItem('Test Item', no_op)
submenu_1.add(item)
self.assertRaises(ValueError, submenu_2.add, item)
class TestRadioMenuItem(unittest.TestCase):
def setUp(self):
IS_CALLED.value = False
def test_parameters(self):
group = RadioGroup(no_op, 'selected_item')
menu_item = RadioMenuItem('Test Item', group, 'selected_item')
self.assertEqual('[X] ', menu_item.prefix)
self.assertEqual('Test Item', menu_item.label)
self.assertEqual('', menu_item.suffix)
self.assertEqual(None, menu_item.next)
self.assertEqual(None, menu_item.prev)
self.assertEqual(None, menu_item.parent)
self.assertEqual(menu_item, menu_item.submenu)
def test_selection(self):
group = RadioGroup(action, 'other_item')
menu_item = RadioMenuItem('Test Item', group, 'selected_item')
menu_item.select()
self.assertTrue(IS_CALLED)
def test_when_already_selected(self):
group = RadioGroup(action, 'selected_item')
menu_item = RadioMenuItem('Test Item', group, 'selected_item')
menu_item.select()
self.assertFalse(IS_CALLED)
class TestMenuCursor(unittest.TestCase):
def setUp(self):
IS_CALLED.value = False
def test_selection_of_item(self):
cursor = menu_cursor(curses.KEY_ENTER)
self.assertEqual(('selected 1',), IS_CALLED.value)
self.assertTrue(cursor.is_done)
def test_selection_of_submenu(self):
cursor = menu_cursor(curses.KEY_DOWN, curses.KEY_DOWN, curses.KEY_ENTER)
self.assertEqual('Item 3', cursor.selection.label)
self.assertFalse(IS_CALLED.value)
self.assertFalse(cursor.is_done)
def test_up(self):
cursor = menu_cursor()
for expected in ('Item 1', 'Empty Submenu', 'Inner Submenu', 'Item 2', 'Item 1'):
self.assertEqual(expected, cursor.selection.label)
cursor.handle_key(nyx.curses.KeyInput(curses.KEY_UP))
def test_down(self):
cursor = menu_cursor()
for expected in ('Item 1', 'Item 2', 'Inner Submenu', 'Empty Submenu', 'Item 1'):
self.assertEqual(expected, cursor.selection.label)
cursor.handle_key(nyx.curses.KeyInput(curses.KEY_DOWN))
def test_left(self):
cursor = menu_cursor()
for expected in ('Item 1', 'Item 4', 'Item 1'):
self.assertEqual(expected, cursor.selection.label)
cursor.handle_key(nyx.curses.KeyInput(curses.KEY_LEFT))
def test_left_when_inner_submenu(self):
cursor = menu_cursor(curses.KEY_DOWN, curses.KEY_DOWN, curses.KEY_RIGHT)
for expected in ('Item 3', 'Inner Submenu', 'Item 4'):
self.assertEqual(expected, cursor.selection.label)
cursor.handle_key(nyx.curses.KeyInput(curses.KEY_LEFT))
def test_right(self):
cursor = menu_cursor()
for expected in ('Item 1', 'Item 4', 'Item 1'):
self.assertEqual(expected, cursor.selection.label)
cursor.handle_key(nyx.curses.KeyInput(curses.KEY_RIGHT))
def test_right_when_inner_submenu(self):
cursor = menu_cursor(curses.KEY_DOWN, curses.KEY_DOWN)
for expected in ('Inner Submenu', 'Item 3', 'Item 4', 'Item 1'):
self.assertEqual(expected, cursor.selection.label)
cursor.handle_key(nyx.curses.KeyInput(curses.KEY_RIGHT))
def test_esc(self):
cursor = menu_cursor(27)
self.assertTrue(cursor.is_done)
# pressing 'm' closes the menu too
cursor = menu_cursor(ord('m'))
self.assertTrue(cursor.is_done)
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