Fix errors in test_latex_name_isnt_split for min environments (#5710)

Author: Illviljan

xarray/tests/test_plot.py

@@ -185,6 +185,11 @@ def test_label_from_attrs(self):
         da.attrs.pop("units")
         assert "a" == label_from_attrs(da)
 
+        # Latex strings can be longer without needing a new line:
+        long_latex_name = r"$Ra_s = \mathrm{mean}(\epsilon_k) / \mu M^2_\infty$"
+        da.attrs = dict(long_name=long_latex_name)
+        assert label_from_attrs(da) == long_latex_name
+
     def test1d(self):
         self.darray[:, 0, 0].plot()
 
@@ -2950,10 +2955,3 @@ def test_datarray_scatter(x, y, z, hue, markersize, row, col, add_legend, add_co
             add_legend=add_legend,
             add_colorbar=add_colorbar,
         )
-
-
-def test_latex_name_isnt_split():
-    da = xr.DataArray()
-    long_latex_name = r"$Ra_s = \mathrm{mean}(\epsilon_k) / \mu M^2_\infty$"
-    da.attrs = dict(long_name=long_latex_name)
-    assert label_from_attrs(da) == long_latex_name