def test_get_display(self):
entries = [("A","a"),("B","b"),("C","c")]
m = Menu(entries)
lines = m.get_display()
self.assertEqual(len(lines),2)
self.assertEqual(lines[0],">A")
self.assertEqual(lines[1]," B")
def test_scroll_down(self):
entries = [("A","a"),("B","b"),("C","c")]
m = Menu(entries)
m.scroll('down')
lines = m.get_display()
self.assertEqual(lines[0]," A")
self.assertEqual(lines[1],">B")
def test_scroll_up(self):
entries = [("A","a"),("B","b"),("C","c")]
m = Menu(entries)
m._select_line = 1
m.scroll('up')
lines = m.get_display()
self.assertEqual(lines[0],">A")
self.assertEqual(lines[1]," B")
def test_scroll_display_double_up(self):
entries = [("A","a"),("B","b"),("C","c")]
m = Menu(entries)
m._display_start = 1
m.scroll_display('up')
m.scroll_display('up')
lines = m.get_display()
self.assertEqual(lines[0],">A")
self.assertEqual(lines[1]," B")