Converted integration/experimental to pytest (#6822)

* converted test_CubeRep

* converted test_regrid_ProjUns

* converted geovista/test_cube_to_poly

* converted geovista/test_extract_uns_reg

Author: ESadek-MO

lib/iris/tests/integration/experimental/geovista/test_cube_to_poly.py

@@ -4,15 +4,13 @@
 # See LICENSE in the root of the repository for full licensing details.
 """Integration tests for the `iris.experimental.geovista.cube_to_polydata` function."""
 
-import numpy as np
-
 from iris import load_cube
 from iris.experimental.geovista import cube_to_polydata
-from iris.tests import get_data_path
+from iris.tests import _shared_utils
 
 
 def test_integration_2d():
-    file_path = get_data_path(
+    file_path = _shared_utils.get_data_path(
         [
             "NetCDF",
             "ORCA2",
@@ -26,11 +24,13 @@ def test_integration_2d():
     # This is a known good output, we have plotted the result and checked it.
     assert polydata.GetNumberOfCells() == 26640
     assert polydata.GetNumberOfPoints() == 26969
-    np.testing.assert_array_equal(cube[0, 1, :].data.flatten(), polydata.active_scalars)
+    _shared_utils.assert_array_equal(
+        cube[0, 1, :].data.flatten(), polydata.active_scalars
+    )
 
 
 def test_integration_1d():
-    file_path = get_data_path(
+    file_path = _shared_utils.get_data_path(
         [
             "NetCDF",
             "global",
@@ -44,11 +44,11 @@ def test_integration_1d():
     # This is a known good output, we have plotted the result and checked it.
     assert polydata.GetNumberOfCells() == 51200
     assert polydata.GetNumberOfPoints() == 51681
-    np.testing.assert_array_equal(cube[0, :].data.flatten(), polydata.active_scalars)
+    _shared_utils.assert_array_equal(cube[0, :].data.flatten(), polydata.active_scalars)
 
 
 def test_integration_mesh():
-    file_path = get_data_path(
+    file_path = _shared_utils.get_data_path(
         [
             "NetCDF",
             "unstructured_grid",
@@ -62,4 +62,4 @@ def test_integration_mesh():
     # This is a known good output, we have plotted the result and checked it.
     assert polydata.GetNumberOfCells() == 864
     assert polydata.GetNumberOfPoints() == 866
-    np.testing.assert_array_equal(polydata.active_scalars, cube[0, :].data)
+    _shared_utils.assert_array_equal(polydata.active_scalars, cube[0, :].data)

lib/iris/tests/integration/experimental/geovista/test_extract_unstructured_region.py

@@ -8,11 +8,11 @@
 
 from iris import load_cube
 from iris.experimental.geovista import cube_to_polydata, extract_unstructured_region
-from iris.tests import get_data_path
+from iris.tests import _shared_utils
 
 
 def test_face_region_extraction():
-    file_path = get_data_path(
+    file_path = _shared_utils.get_data_path(
         [
             "NetCDF",
             "unstructured_grid",

lib/iris/tests/integration/experimental/test_CubeRepresentation.py

@@ -4,23 +4,22 @@
 # See LICENSE in the root of the repository for full licensing details.
 """Integration tests for cube html representation."""
 
-# Import iris.tests first so that some things can be initialised before
-# importing anything else.
-import iris.tests as tests  # isort:skip
-
 from html import escape
 
 import numpy as np
+import pytest
 
 from iris.cube import Cube
 from iris.experimental.representation import CubeRepresentation
+from iris.tests import _shared_utils
 import iris.tests.stock as stock
 
 
-@tests.skip_data
-class TestNoMetadata(tests.IrisTest):
+@_shared_utils.skip_data
+class TestNoMetadata:
     # Test the situation where we have a cube with no metadata at all.
-    def setUp(self):
+    @pytest.fixture(autouse=True)
+    def _setup(self):
         self.shape = (2, 3, 4)
         self.cube = Cube(np.arange(24).reshape(self.shape))
         self.representer = CubeRepresentation(self.cube)
@@ -29,26 +28,27 @@ def setUp(self):
     def test_cube_name(self):
         expected = "Unknown"  # This cube has no metadata.
         result = self.representer.name
-        self.assertEqual(expected, result)
+        assert expected == result
 
     def test_cube_units(self):
         expected = "unknown"  # This cube has no metadata.
         result = self.representer.units
-        self.assertEqual(expected, result)
+        assert expected == result
 
     def test_dim_names(self):
         expected = ["--"] * len(self.shape)
         result = self.representer.names
-        self.assertEqual(expected, result)
+        assert expected == result
 
     def test_shape(self):
         result = self.representer.shapes
-        self.assertEqual(result, self.shape)
+        assert result == self.shape
 
 
-@tests.skip_data
-class TestMissingMetadata(tests.IrisTest):
-    def setUp(self):
+@_shared_utils.skip_data
+class TestMissingMetadata:
+    @pytest.fixture(autouse=True)
+    def _setup(self):
         self.cube = stock.realistic_3d()
 
     def test_no_coords(self):
@@ -57,107 +57,104 @@ def test_no_coords(self):
             self.cube.remove_coord(coord)
         representer = CubeRepresentation(self.cube)
         result = representer.repr_html().lower()
-        self.assertNotIn("dimension coordinates", result)
-        self.assertNotIn("auxiliary coordinates", result)
-        self.assertNotIn("scalar coordinates", result)
-        self.assertIn("attributes", result)
+        assert "dimension coordinates" not in result
+        assert "auxiliary coordinates" not in result
+        assert "scalar coordinates" not in result
+        assert "attributes" in result
 
     def test_no_dim_coords(self):
         dim_coords = [c.name() for c in self.cube.coords(dim_coords=True)]
         for coord in dim_coords:
             self.cube.remove_coord(coord)
         representer = CubeRepresentation(self.cube)
         result = representer.repr_html().lower()
-        self.assertNotIn("dimension coordinates", result)
-        self.assertIn("auxiliary coordinates", result)
-        self.assertIn("scalar coordinates", result)
-        self.assertIn("attributes", result)
+        assert "dimension coordinates" not in result
+        assert "auxiliary coordinates" in result
+        assert "scalar coordinates" in result
+        assert "attributes" in result
 
     def test_no_aux_coords(self):
         aux_coords = ["forecast_period"]
         for coord in aux_coords:
             self.cube.remove_coord(coord)
         representer = CubeRepresentation(self.cube)
         result = representer.repr_html().lower()
-        self.assertIn("dimension coordinates", result)
-        self.assertNotIn("auxiliary coordinates", result)
-        self.assertIn("scalar coordinates", result)
-        self.assertIn("attributes", result)
+        assert "dimension coordinates" in result
+        assert "auxiliary coordinates" not in result
+        assert "scalar coordinates" in result
+        assert "attributes" in result
 
     def test_no_scalar_coords(self):
         aux_coords = ["air_pressure"]
         for coord in aux_coords:
             self.cube.remove_coord(coord)
         representer = CubeRepresentation(self.cube)
         result = representer.repr_html().lower()
-        self.assertIn("dimension coordinates", result)
-        self.assertIn("auxiliary coordinates", result)
-        self.assertNotIn("scalar coordinates", result)
-        self.assertIn("attributes", result)
+        assert "dimension coordinates" in result
+        assert "auxiliary coordinates" in result
+        assert "scalar coordinates" not in result
+        assert "attributes" in result
 
     def test_no_attrs(self):
         self.cube.attributes = {}
         representer = CubeRepresentation(self.cube)
         result = representer.repr_html().lower()
-        self.assertIn("dimension coordinates", result)
-        self.assertIn("auxiliary coordinates", result)
-        self.assertIn("scalar coordinates", result)
-        self.assertNotIn("attributes", result)
+        assert "dimension coordinates" in result
+        assert "auxiliary coordinates" in result
+        assert "scalar coordinates" in result
+        assert "attributes" not in result
 
     def test_no_cell_methods(self):
         representer = CubeRepresentation(self.cube)
         result = representer.repr_html().lower()
-        self.assertNotIn("cell methods", result)
+        assert "cell methods" not in result
 
 
-@tests.skip_data
-class TestScalarCube(tests.IrisTest):
-    def setUp(self):
+@_shared_utils.skip_data
+class TestScalarCube:
+    @pytest.fixture(autouse=True)
+    def _setup(self):
         self.cube = stock.realistic_3d()[0, 0, 0]
         self.representer = CubeRepresentation(self.cube)
         self.representer.repr_html()
 
     def test_identfication(self):
         # Is this scalar cube accurately identified?
-        self.assertTrue(self.representer.scalar_cube)
+        assert self.representer.scalar_cube
 
     def test_header__name(self):
         header = self.representer._make_header()
         expected_name = escape(self.cube.name().title().replace("_", " "))
-        self.assertIn(expected_name, header)
+        assert expected_name in header
 
     def test_header__units(self):
         header = self.representer._make_header()
         expected_units = escape(self.cube.units.symbol)
-        self.assertIn(expected_units, header)
+        assert expected_units in header
 
     def test_header__scalar_str(self):
         # Check that 'scalar cube' is placed in the header.
         header = self.representer._make_header()
         expected_str = "(scalar cube)"
-        self.assertIn(expected_str, header)
+        assert expected_str in header
 
     def test_content__scalars(self):
         # Check an element "Scalar coordinates" is present in the main content.
         content = self.representer._make_content()
         expected_str = "Scalar coordinates"
-        self.assertIn(expected_str, content)
+        assert expected_str in content
 
     def test_content__specific_scalar_coord(self):
         # Check a specific scalar coord is present in the main content.
         content = self.representer._make_content()
         expected_coord = self.cube.coords()[0]
         expected_coord_name = escape(expected_coord.name())
-        self.assertIn(expected_coord_name, content)
+        assert expected_coord_name in content
         expected_coord_val = escape(str(expected_coord.points[0]))
-        self.assertIn(expected_coord_val, content)
+        assert expected_coord_val in content
 
     def test_content__attributes(self):
         # Check an element "attributes" is present in the main content.
         content = self.representer._make_content()
         expected_str = "Attributes"
-        self.assertIn(expected_str, content)
-
-
-if __name__ == "__main__":
-    tests.main()
+        assert expected_str in content