def test_mouse_move():
"""Test painting labels with different brush sizes."""
np.random.seed(0)
data = np.random.randint(20, size=(20, 20))
layer = Labels(data)
layer.brush_size = 10
layer.mode = 'paint'
layer.selected_label = 3
layer._last_cursor_coord = (0, 0)
layer.coordinates = (19, 19)
Event = collections.namedtuple('Event', 'is_dragging')
event = Event(is_dragging=True)
layer.on_mouse_move(event)
assert np.unique(layer.data[:5, :5]) == 3
assert np.unique(layer.data[-5:, -5:]) == 3
