Updated checks that no warnings were raised

Tests/test_bmp_reference.py

@@ -1,6 +1,5 @@
 import os
-
-import pytest
+import warnings
 
 from PIL import Image
 
@@ -20,16 +19,14 @@ def test_bad():
     either"""
     for f in get_files("b"):
 
-        with pytest.warns(None) as record:
+        # Assert that there is no unclosed file warning
+        with warnings.catch_warnings():
             try:
                 with Image.open(f) as im:
                     im.load()
             except Exception:  # as msg:
                 pass
 
-        # Assert that there is no unclosed file warning
-        assert not record
-
 
 def test_questionable():
     """These shouldn't crash/dos, but it's not well defined that these

Tests/test_file_dcx.py

@@ -1,3 +1,5 @@
+import warnings
+
 import pytest
 
 from PIL import DcxImagePlugin, Image
@@ -31,21 +33,17 @@ def open():
 
 
 def test_closed_file():
-    with pytest.warns(None) as record:
+    with warnings.catch_warnings():
         im = Image.open(TEST_FILE)
         im.load()
         im.close()
 
-    assert not record
-
 
 def test_context_manager():
-    with pytest.warns(None) as record:
+    with warnings.catch_warnings():
         with Image.open(TEST_FILE) as im:
             im.load()
 
-    assert not record
-
 
 def test_invalid_file():
     with open("Tests/images/flower.jpg", "rb") as fp:

Tests/test_file_fli.py

@@ -1,3 +1,5 @@
+import warnings
+
 import pytest
 
 from PIL import FliImagePlugin, Image
@@ -38,21 +40,17 @@ def open():
 
 
 def test_closed_file():
-    with pytest.warns(None) as record:
+    with warnings.catch_warnings():
         im = Image.open(static_test_file)
         im.load()
         im.close()
 
-    assert not record
-
 
 def test_context_manager():
-    with pytest.warns(None) as record:
+    with warnings.catch_warnings():
         with Image.open(static_test_file) as im:
             im.load()
 
-    assert not record
-
 
 def test_tell():
     # Arrange

Tests/test_file_gif.py

@@ -1,3 +1,4 @@
+import warnings
 from io import BytesIO
 
 import pytest
@@ -39,21 +40,17 @@ def open():
 
 
 def test_closed_file():
-    with pytest.warns(None) as record:
+    with warnings.catch_warnings():
         im = Image.open(TEST_GIF)
         im.load()
         im.close()
 
-    assert not record
-
 
 def test_context_manager():
-    with pytest.warns(None) as record:
+    with warnings.catch_warnings():
         with Image.open(TEST_GIF) as im:
             im.load()
 
-    assert not record
-
 
 def test_invalid_file():
     invalid_file = "Tests/images/flower.jpg"

Tests/test_file_icns.py

@@ -1,5 +1,6 @@
 import io
 import os
+import warnings
 
 import pytest
 
@@ -19,9 +20,8 @@ def test_sanity():
     with Image.open(TEST_FILE) as im:
 
         # Assert that there is no unclosed file warning
-        with pytest.warns(None) as record:
+        with warnings.catch_warnings():
             im.load()
-        assert not record
 
         assert im.mode == "RGBA"
         assert im.size == (1024, 1024)

Tests/test_file_im.py

@@ -1,4 +1,5 @@
 import filecmp
+import warnings
 
 import pytest
 
@@ -35,21 +36,17 @@ def open():
 
 
 def test_closed_file():
-    with pytest.warns(None) as record:
+    with warnings.catch_warnings():
         im = Image.open(TEST_IM)
         im.load()
         im.close()
 
-    assert not record
-
 
 def test_context_manager():
-    with pytest.warns(None) as record:
+    with warnings.catch_warnings():
         with Image.open(TEST_IM) as im:
             im.load()
 
-    assert not record
-
 
 def test_tell():
     # Arrange

Tests/test_file_jpeg.py

@@ -1,5 +1,6 @@
 import os
 import re
+import warnings
 from io import BytesIO
 
 import pytest
@@ -756,9 +757,8 @@ def test_exif_x_resolution(self, tmp_path):
             assert exif[282] == 180
 
             out = str(tmp_path / "out.jpg")
-            with pytest.warns(None) as record:
+            with warnings.catch_warnings():
                 im.save(out, exif=exif)
-            assert not record
 
         with Image.open(out) as reloaded:
             assert reloaded.getexif()[282] == 180

Tests/test_file_mpo.py

@@ -1,3 +1,4 @@
+import warnings
 from io import BytesIO
 
 import pytest
@@ -41,21 +42,17 @@ def open():
 
 
 def test_closed_file():
-    with pytest.warns(None) as record:
+    with warnings.catch_warnings():
         im = Image.open(test_files[0])
         im.load()
         im.close()
 
-    assert not record
-
 
 def test_context_manager():
-    with pytest.warns(None) as record:
+    with warnings.catch_warnings():
         with Image.open(test_files[0]) as im:
             im.load()
 
-    assert not record
-
 
 def test_app():
     for test_file in test_files:

Tests/test_file_png.py

@@ -1,5 +1,6 @@
 import re
 import sys
+import warnings
 import zlib
 from io import BytesIO
 
@@ -331,9 +332,8 @@ def test_load_verify(self):
 
         with Image.open(TEST_PNG_FILE) as im:
             # Assert that there is no unclosed file warning
-            with pytest.warns(None) as record:
+            with warnings.catch_warnings():
                 im.verify()
-            assert not record
 
         with Image.open(TEST_PNG_FILE) as im:
             im.load()

Tests/test_file_psd.py

@@ -1,3 +1,5 @@
+import warnings
+
 import pytest
 
 from PIL import Image, PsdImagePlugin
@@ -29,21 +31,17 @@ def open():
 
 
 def test_closed_file():
-    with pytest.warns(None) as record:
+    with warnings.catch_warnings():
         im = Image.open(test_file)
         im.load()
         im.close()
 
-    assert not record
-
 
 def test_context_manager():
-    with pytest.warns(None) as record:
+    with warnings.catch_warnings():
         with Image.open(test_file) as im:
             im.load()
 
-    assert not record
-
 
 def test_invalid_file():
     invalid_file = "Tests/images/flower.jpg"

Tests/test_file_spider.py

@@ -1,4 +1,5 @@
 import tempfile
+import warnings
 from io import BytesIO
 
 import pytest
@@ -28,21 +29,17 @@ def open():
 
 
 def test_closed_file():
-    with pytest.warns(None) as record:
+    with warnings.catch_warnings():
         im = Image.open(TEST_FILE)
         im.load()
         im.close()
 
-    assert not record
-
 
 def test_context_manager():
-    with pytest.warns(None) as record:
+    with warnings.catch_warnings():
         with Image.open(TEST_FILE) as im:
             im.load()
 
-    assert not record
-
 
 def test_save(tmp_path):
     # Arrange

Tests/test_file_tar.py

@@ -1,3 +1,5 @@
+import warnings
+
 import pytest
 
 from PIL import Image, TarIO, features
@@ -31,16 +33,12 @@ def open():
 
 
 def test_close():
-    with pytest.warns(None) as record:
+    with warnings.catch_warnings():
         tar = TarIO.TarIO(TEST_TAR_FILE, "hopper.jpg")
         tar.close()
 
-    assert not record
-
 
 def test_contextmanager():
-    with pytest.warns(None) as record:
+    with warnings.catch_warnings():
         with TarIO.TarIO(TEST_TAR_FILE, "hopper.jpg"):
             pass
-
-    assert not record

Tests/test_file_tiff.py

@@ -1,4 +1,5 @@
 import os
+import warnings
 from io import BytesIO
 
 import pytest
@@ -64,20 +65,16 @@ def open():
         pytest.warns(ResourceWarning, open)
 
     def test_closed_file(self):
-        with pytest.warns(None) as record:
+        with warnings.catch_warnings():
             im = Image.open("Tests/images/multipage.tiff")
             im.load()
             im.close()
 
-        assert not record
-
     def test_context_manager(self):
-        with pytest.warns(None) as record:
+        with warnings.catch_warnings():
             with Image.open("Tests/images/multipage.tiff") as im:
                 im.load()
 
-        assert not record
-
     def test_mac_tiff(self):
         # Read RGBa images from macOS [@PIL136]
 

Tests/test_file_webp.py

@@ -1,6 +1,7 @@
 import io
 import re
 import sys
+import warnings
 
 import pytest
 
@@ -161,9 +162,8 @@ def test_no_resource_warning(self, tmp_path):
         file_path = "Tests/images/hopper.webp"
         with Image.open(file_path) as image:
             temp_file = str(tmp_path / "temp.webp")
-            with pytest.warns(None) as record:
+            with warnings.catch_warnings():
                 image.save(temp_file)
-            assert not record
 
     def test_file_pointer_could_be_reused(self):
         file_path = "Tests/images/hopper.webp"

Tests/test_image.py

@@ -3,6 +3,7 @@
 import shutil
 import sys
 import tempfile
+import warnings
 
 import pytest
 
@@ -648,9 +649,8 @@ def test_no_resource_warning_on_save(self, tmp_path):
 
         # Act/Assert
         with Image.open(test_file) as im:
-            with pytest.warns(None) as record:
+            with warnings.catch_warnings():
                 im.save(temp_file)
-            assert not record
 
     def test_load_on_nonexclusive_multiframe(self):
         with open("Tests/images/frozenpond.mpo", "rb") as fp:

Tests/test_imageqt.py

@@ -1,3 +1,5 @@
+import warnings
+
 import pytest
 
 from PIL import ImageQt
@@ -56,7 +58,5 @@ def test_image():
 
 
 def test_closed_file():
-    with pytest.warns(None) as record:
+    with warnings.catch_warnings():
         ImageQt.ImageQt("Tests/images/hopper.gif")
-
-    assert not record