def test_brush_indices_change(self, small_df, populated_config):
ds = DataSource(small_df, None)
hw = HistogramWidget(ds, 0, 0, 1.0, 400)
hw.build()
ds.brushed_indices = [1, 2, 3]
assert hw.figure_widget.data[1].selectedpoints == ds.brushed_indices
assert hw.figure_widget.data[0].visible
def test_normal_build(self, small_df, populated_config):
ds = DataSource(small_df, None)
hw = HistogramWidget(ds, 0, 0, 1.0, 400)
root_widget = hw.build()
assert isinstance(root_widget, widgets.VBox)