def _key_pressed(canvas, ktype='key_press', key='', **kwargs):
"""Test VisPy KeyEvent."""
k = KeyEvent(ktype, text=key, **kwargs) # noqa
eval('canvas.events.' + ktype + '(k)')
def test_key_previous_signal(self):
"""Test function previous_signal."""
k = KeyEvent('key_press', text='b')
sig._signal_canvas.canvas.events.key_press(k)