testing

esda/moran.py

@@ -793,7 +793,9 @@ def plot_moran_facet(
 ):
     """
     Moran Facet visualization.
-    Includes BV Morans and Global Morans on the diagonal.
+
+    A matrix containing bivariate Moran plots between all pairs of variables present in
+    the ``moran_matrix`` dictionary. On the diagonal contains global Moran plot.
 
     Parameters
     ----------

esda/tests/test_moran.py

@@ -243,7 +243,9 @@ def test_Moran_plot_scatter_args(self, w):
             w,
         )
 
-        ax = m.plot_scatter(scatter_kwds=dict(color='blue'), fitline_kwds=dict(color='pink'))
+        ax = m.plot_scatter(
+            scatter_kwds=dict(color="blue"), fitline_kwds=dict(color="pink")
+        )
 
         # test scatter
         np.testing.assert_array_almost_equal(
@@ -256,7 +258,6 @@ def test_Moran_plot_scatter_args(self, w):
         assert l.get_color() == "pink"
 
 
-
 class TestMoranRate:
     def setup_method(self):
         f = libpysal.io.open(libpysal.examples.get_path("sids2.dbf"))
@@ -297,6 +298,26 @@ def test_Moran_BV_matrix(self, w):
         np.testing.assert_allclose(res[(0, 1)].I, 0.19362610652874668)
         np.testing.assert_allclose(res[(3, 0)].I, 0.37701382542927858)
 
+    @parametrize_sids
+    def test_plot_moran_facet(self, w):
+        matrix = moran.Moran_BV_matrix(self.vars, w, varnames=self.names)
+        axes = moran.plot_moran_facet(matrix)
+        assert axes.shape == (4, 4)
+
+        assert axes[0][0].spines["left"].get_visible()
+        assert not axes[0][0].spines["bottom"].get_visible()
+        assert axes[3][0].spines["left"].get_visible()
+        assert axes[3][0].spines["bottom"].get_visible()
+        assert not axes[3][1].spines["left"].get_visible()
+        assert axes[3][1].spines["bottom"].get_visible()
+        assert not axes[1][1].spines["left"].get_visible()
+        assert not axes[1][1].spines["bottom"].get_visible()
+
+        np.testing.assert_array_almost_equal(
+            axes[1][1].get_facecolor(),
+            (0.8509803921568627, 0.8509803921568627, 0.8509803921568627, 1.0),
+        )
+
 
 class TestMoranLocal:
     def setup_method(self):