def METHOD_NAME(self):
    a = np.repeat(np.arange(5), 5)
    b = np.repeat(np.arange(5)/10., 5)
    box = BoxWhisker((a, b, np.arange(25)), ['a', 'b'], 'd').opts(box_alpha='b')
    plot = bokeh_renderer.get_plot(box)
    source = plot.handles['vbar_1_source']
    glyph = plot.handles['vbar_1_glyph']
    self.assertEqual(source.data['box_alpha'], np.arange(5)/10.)
    self.assertEqual(property_to_dict(glyph.fill_alpha), {'field': 'box_alpha'})