Demonstrate new check_graphic in test_plot.

lib/iris/tests/test_plot.py

@@ -13,6 +13,7 @@
 
 import cf_units
 import numpy as np
+import pytest
 
 import iris
 import iris.analysis
@@ -240,14 +241,15 @@ def setUp(self):
 
 @tests.skip_data
 @tests.skip_plot
-class Test1dScatter(tests.GraphicsTest):
-    def setUp(self):
-        super().setUp()
+class Test1dScatter:
+    @pytest.fixture(autouse=True)
+    def setup(self, check_graphic_caller):
         self.cube = iris.load_cube(
             tests.get_data_path(("NAME", "NAMEIII_trajectory.txt")),
             "Temperature",
         )
         self.draw_method = iplt.scatter
+        self.check_graphic = check_graphic_caller
 
     def test_coord_coord(self):
         x = self.cube.coord("longitude")
@@ -288,27 +290,6 @@ def test_cube_cube(self):
         self.draw_method(x, y, c=c, edgecolor="none")
         self.check_graphic()
 
-    def test_incompatible_objects(self):
-        # cubes/coordinates of different sizes cannot be plotted
-        x = self.cube
-        y = self.cube.coord("altitude")[:-1]
-        with self.assertRaises(ValueError):
-            self.draw_method(x, y)
-
-    def test_multidimensional(self):
-        # multidimensional cubes/coordinates are not allowed
-        x = _load_4d_testcube()[0, :, :, 0]
-        y = x.coord("model_level_number")
-        with self.assertRaises(ValueError):
-            self.draw_method(x, y)
-
-    def test_not_cube_or_coord(self):
-        # inputs must be cubes or coordinates
-        x = np.arange(self.cube.shape[0])
-        y = self.cube
-        with self.assertRaises(TypeError):
-            self.draw_method(x, y)
-
 
 @tests.skip_data
 @tests.skip_plot