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- import pytest
- from numpy.testing import assert_, assert_array_equal, suppress_warnings
- try:
- import matplotlib
- matplotlib.rcParams['backend'] = 'Agg'
- import matplotlib.pyplot as plt
- has_matplotlib = True
- except Exception:
- has_matplotlib = False
- from scipy.spatial import \
- delaunay_plot_2d, voronoi_plot_2d, convex_hull_plot_2d, \
- Delaunay, Voronoi, ConvexHull
- @pytest.mark.skipif(not has_matplotlib, reason="Matplotlib not available")
- class TestPlotting:
- points = [(0,0), (0,1), (1,0), (1,1)]
- def test_delaunay(self):
- # Smoke test
- fig = plt.figure()
- obj = Delaunay(self.points)
- s_before = obj.simplices.copy()
- with suppress_warnings() as sup:
- # filter can be removed when matplotlib 1.x is dropped
- sup.filter(message="The ishold function was deprecated in version")
- r = delaunay_plot_2d(obj, ax=fig.gca())
- assert_array_equal(obj.simplices, s_before) # shouldn't modify
- assert_(r is fig)
- delaunay_plot_2d(obj, ax=fig.gca())
- def test_voronoi(self):
- # Smoke test
- fig = plt.figure()
- obj = Voronoi(self.points)
- with suppress_warnings() as sup:
- # filter can be removed when matplotlib 1.x is dropped
- sup.filter(message="The ishold function was deprecated in version")
- r = voronoi_plot_2d(obj, ax=fig.gca())
- assert_(r is fig)
- voronoi_plot_2d(obj)
- voronoi_plot_2d(obj, show_vertices=False)
- def test_convex_hull(self):
- # Smoke test
- fig = plt.figure()
- tri = ConvexHull(self.points)
- with suppress_warnings() as sup:
- # filter can be removed when matplotlib 1.x is dropped
- sup.filter(message="The ishold function was deprecated in version")
- r = convex_hull_plot_2d(tri, ax=fig.gca())
- assert_(r is fig)
- convex_hull_plot_2d(tri)
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