Removing old MPL version checks and tolerances.

lib/cartopy/tests/mpl/__init__.py

@@ -205,14 +205,7 @@ def wrapped(*args, **kwargs):
                               (mod_name, test_name))
                 plt.close('all')
 
-            if MPL_VERSION >= '2':
-                style_context = mpl.style.context
-            else:
-                @contextlib.contextmanager
-                def style_context(style, after_reset=False):
-                    yield
-
-            with style_context(self.style):
+            with mpl.style.context(self.style):
                 if MPL_VERSION >= '3.2.0':
                     mpl.rcParams['text.kerning_factor'] = 6
 

lib/cartopy/tests/mpl/test_examples.py

@@ -30,8 +30,7 @@ def new_fn(*args, **kwargs):
 
 
 @pytest.mark.natural_earth
-@ExampleImageTesting(['global_map'],
-                     tolerance=4.5 if MPL_VERSION < '2' else 0.5)
+@ExampleImageTesting(['global_map'], tolerance=0.5)
 def test_global_map():
     fig = plt.figure(figsize=(10, 5))
     ax = fig.add_subplot(1, 1, 1, projection=ccrs.Robinson())
@@ -48,12 +47,8 @@ def test_global_map():
     ax.plot([-0.08, 132], [51.53, 43.17], transform=ccrs.Geodetic())
 
 
-if MPL_VERSION < '2':
-    contour_labels_tolerance = 7.5
-elif MPL_VERSION <= '2.0.2':
-    contour_labels_tolerance = 1.24
-elif MPL_VERSION <= '2.1.2':
-    contour_labels_tolerance = 0.63
+if MPL_VERSION < '3':
+    contour_labels_tolerance = 9.8
 else:
     contour_labels_tolerance = 0
 

lib/cartopy/tests/mpl/test_features.py

@@ -11,7 +11,7 @@
 import cartopy.feature as cfeature
 from cartopy.io.ogc_clients import _OWSLIB_AVAILABLE
 
-from cartopy.tests.mpl import MPL_VERSION, ImageTesting
+from cartopy.tests.mpl import ImageTesting
 
 
 @pytest.mark.filterwarnings("ignore:Downloading")
@@ -42,8 +42,7 @@ def test_natural_earth_custom():
     ax.set_ylim((58, 72))
 
 
-@ImageTesting(['gshhs_coastlines'],
-              tolerance=3.3 if MPL_VERSION < '2' else 0.95)
+@ImageTesting(['gshhs_coastlines'], tolerance=0.95)
 def test_gshhs():
     ax = plt.axes(projection=ccrs.Mollweide())
     ax.set_extent([138, 142, 32, 42], ccrs.Geodetic())

lib/cartopy/tests/mpl/test_gridliner.py

@@ -127,44 +127,15 @@ def test_gridliner_specified_lines():
 
 # The tolerance on these tests are particularly high because of the high number
 # of text objects. A new testing strategy is needed for this kind of test.
-grid_label_tol = grid_label_inline_tol = grid_label_inline_usa_tol = 0.5
-if MPL_VERSION >= '2.0':
-    grid_label_image = 'gridliner_labels'
-    if ccrs.PROJ4_VERSION < (4, 9, 3):
-        # A 0-longitude label is missing on older Proj versions.
-        grid_label_tol = 1.8
-    grid_label_inline_image = 'gridliner_labels_inline'
-    grid_label_inline_usa_image = 'gridliner_labels_inline_usa'
-    if ccrs.PROJ4_VERSION == (4, 9, 1):
-        # AzimuthalEquidistant was previously broken.
-        grid_label_inline_tol = 7.9
-        grid_label_inline_usa_tol = 7.7
-    elif ccrs.PROJ4_VERSION < (5, 0, 0):
-        # Stereographic was previously broken.
-        grid_label_inline_tol = 6.4
-        grid_label_inline_usa_tol = 4.0
+if MPL_VERSION < "3":
+    TOL = 15
 else:
-    # Skip test_grid_labels_tight for matplotlib 1.5.1 because it
-    # is not possible to override tight bounding box calculation
-    grid_label_image = 'gridliner_labels_1.5'
-    grid_label_tol = 1.8
-    grid_label_inline_image = 'gridliner_labels_inline_1.5'
-    grid_label_inline_usa_image = 'gridliner_labels_inline_usa_1.5'
-    if ccrs.PROJ4_VERSION >= (5, 0, 0):
-        # Stereographic was fixed, but test image was not updated.
-        grid_label_inline_tol = 7.9
-        grid_label_inline_usa_tol = 7.9
-    elif ccrs.PROJ4_VERSION >= (4, 9, 2):
-        # AzimuthalEquidistant was fixed, but test image was not updated.
-        grid_label_inline_tol = 5.4
-        grid_label_inline_usa_tol = 7.2
-if (5, 0, 0) <= ccrs.PROJ4_VERSION < (5, 1, 0):
-    # Several projections are broken in these versions, so not plotted.
-    grid_label_inline_tol += 5.1
-    grid_label_inline_usa_tol += 5.5
-elif (6, 0, 0) <= ccrs.PROJ4_VERSION:
-    # Better Robinson projection causes some text movement.
-    grid_label_inline_tol += 1.2
+    TOL = 0.5
+grid_label_tol = grid_label_inline_tol = grid_label_inline_usa_tol = TOL
+grid_label_inline_tol += 1.1
+grid_label_image = 'gridliner_labels'
+grid_label_inline_image = 'gridliner_labels_inline'
+grid_label_inline_usa_image = 'gridliner_labels_inline_usa'
 
 
 @pytest.mark.natural_earth
@@ -237,9 +208,6 @@ def test_grid_labels():
     plt.subplots_adjust(wspace=0.25, hspace=0.25)
 
 
-@pytest.mark.skipif(
-    MPL_VERSION < '2.0.0',
-    reason='Impossible to override tight layout algorithm in mpl < 2.0.0')
 @pytest.mark.natural_earth
 @ImageTesting(['gridliner_labels_tight'],
               tolerance=grid_label_tol if ccrs.PROJ4_VERSION < (7, 1, 0)

lib/cartopy/tests/mpl/test_images.py

@@ -19,7 +19,7 @@
 import cartopy.crs as ccrs
 import cartopy.io.img_tiles as cimgt
 
-from cartopy.tests.mpl import MPL_VERSION, ImageTesting
+from cartopy.tests.mpl import ImageTesting
 import cartopy.tests.test_img_tiles as ctest_tiles
 
 
@@ -33,20 +33,12 @@
 # We have an exceptionally large tolerance for the web_tiles test.
 # The basemap changes on a regular basis (for seasons) and we really only
 # care that it is putting images onto the map which are roughly correct.
-if MPL_VERSION < '2':
-    web_tiles_tolerance = 12
-elif MPL_VERSION < '2.1.0':
-    web_tiles_tolerance = 4.6
-else:
-    web_tiles_tolerance = 5.4
-
-
 @pytest.mark.natural_earth
 @pytest.mark.network
 @pytest.mark.xfail(ccrs.PROJ4_VERSION == (5, 0, 0),
                    reason='Proj returns slightly different bounds.',
                    strict=True)
-@ImageTesting(['web_tiles'], tolerance=web_tiles_tolerance)
+@ImageTesting(['web_tiles'], tolerance=5.4)
 def test_web_tiles():
     extent = [-15, 0.1, 50, 60]
     target_domain = sgeom.Polygon([[extent[0], extent[1]],
@@ -85,8 +77,7 @@ def test_web_tiles():
 @pytest.mark.xfail(ccrs.PROJ4_VERSION == (5, 0, 0),
                    reason='Proj returns slightly different bounds.',
                    strict=True)
-@ImageTesting(['image_merge'],
-              tolerance=3.9 if MPL_VERSION < '2' else 0.01)
+@ImageTesting(['image_merge'], tolerance=0.01)
 def test_image_merge():
     # tests the basic image merging functionality
     tiles = []
@@ -115,8 +106,7 @@ def test_image_merge():
 @pytest.mark.xfail((5, 0, 0) <= ccrs.PROJ4_VERSION < (5, 1, 0),
                    reason='Proj Orthographic projection is buggy.',
                    strict=True)
-@ImageTesting(['imshow_natural_earth_ortho'],
-              tolerance=3.99 if MPL_VERSION < '2' else 0.7)
+@ImageTesting(['imshow_natural_earth_ortho'], tolerance=0.7)
 def test_imshow():
     source_proj = ccrs.PlateCarree()
     img = plt.imread(NATURAL_EARTH_IMG)
@@ -129,8 +119,7 @@ def test_imshow():
 
 
 @pytest.mark.natural_earth
-@ImageTesting(['imshow_regional_projected'],
-              tolerance=10.4 if MPL_VERSION < '2' else 0.8)
+@ImageTesting(['imshow_regional_projected'], tolerance=0.8)
 def test_imshow_projected():
     source_proj = ccrs.PlateCarree()
     img_extent = (-120.67660000000001, -106.32104523100001,
@@ -184,8 +173,7 @@ def test_imshow_rgb():
 @pytest.mark.xfail((5, 0, 0) <= ccrs.PROJ4_VERSION < (5, 1, 0),
                    reason='Proj Orthographic projection is buggy.',
                    strict=True)
-@ImageTesting(['imshow_natural_earth_ortho'],
-              tolerance=4.19 if MPL_VERSION < '2' else 0.7)
+@ImageTesting(['imshow_natural_earth_ortho'], tolerance=0.7)
 def test_stock_img():
     ax = plt.axes(projection=ccrs.Orthographic())
     ax.stock_img()
@@ -194,8 +182,7 @@ def test_stock_img():
 @pytest.mark.xfail((5, 0, 0) <= ccrs.PROJ4_VERSION < (5, 1, 0),
                    reason='Proj Orthographic projection is buggy.',
                    strict=True)
-@ImageTesting(['imshow_natural_earth_ortho'],
-              tolerance=3.99 if MPL_VERSION < '2' else 0.7)
+@ImageTesting(['imshow_natural_earth_ortho'], tolerance=0.7)
 def test_pil_Image():
     img = Image.open(NATURAL_EARTH_IMG)
     source_proj = ccrs.PlateCarree()
@@ -207,8 +194,7 @@ def test_pil_Image():
 @pytest.mark.xfail((5, 0, 0) <= ccrs.PROJ4_VERSION < (5, 1, 0),
                    reason='Proj Orthographic projection is buggy.',
                    strict=True)
-@ImageTesting(['imshow_natural_earth_ortho'],
-              tolerance=4.2 if MPL_VERSION < '2' else 0.5)
+@ImageTesting(['imshow_natural_earth_ortho'], tolerance=0.5)
 def test_background_img():
     ax = plt.axes(projection=ccrs.Orthographic())
     ax.background_img(name='ne_shaded', resolution='low')

lib/cartopy/tests/mpl/test_img_transform.py

@@ -13,7 +13,7 @@
 import pytest
 
 from cartopy import config
-from cartopy.tests.mpl import MPL_VERSION, ImageTesting
+from cartopy.tests.mpl import ImageTesting
 import cartopy.crs as ccrs
 import cartopy.img_transform as im_trans
 from functools import reduce
@@ -78,22 +78,9 @@ def test_different_dims(self):
                             target_proj, target_x, target_y)
 
 
-if MPL_VERSION < '2':
-    # Changes in zooming in old versions.
-    regrid_tolerance = 2.5
-elif MPL_VERSION < '2.0.1':
-    regrid_tolerance = 0.5
-elif MPL_VERSION < '2.1.0':
-    # Bug in latest Matplotlib that we don't consider correct.
-    regrid_tolerance = 4.78
-else:
-    # Bug in latest Matplotlib that we don't consider correct.
-    regrid_tolerance = 5.55
-
-
+# Bug in latest Matplotlib that we don't consider correct.
 @pytest.mark.natural_earth
-@ImageTesting(['regrid_image'],
-              tolerance=regrid_tolerance)
+@ImageTesting(['regrid_image'], tolerance=5.55)
 def test_regrid_image():
     # Source data
     fname = os.path.join(config["repo_data_dir"], 'raster', 'natural_earth',