Function test_histogram

vispy/visuals/tests/test_histogram.py:12–21

Test histogram visual

()

@requires_application()
def test_histogram():
    """Test histogram visual"""
    size = (200, 100)
    with TestingCanvas(size=size, bgcolor='w') as c:
        np.random.seed(2397)
        data = np.random.normal(size=100)
        hist = Histogram(data, bins=20, color='k', parent=c.scene)
        hist.transform = STTransform((size[0] // 10, -size[1] // 20, 1),
                                     (100, size[1]))
        assert_image_approved(c.render(), "visuals/histogram.png")


run_tests_if_main()