Ignore deprecated pkg_resources.declare_namespace warnings (#611)

As of setuptools v67.3.0 the use of pkg_resources.declare_namespace
in lib/mpl_toolkits/__init__.py raises a DeprecationWarning.

See also:
matplotlib/matplotlib#25244

Run tests directly rather than as a subprocess so that pytest
filterwarnings options have their intended effect.

newsfragments/611.misc

@@ -0,0 +1 @@
+Ignore deprecated ``pkg_resources.declare_namespace`` warnings in pytest

pytest.ini

@@ -4,6 +4,7 @@ filterwarnings =
     ignore:the matrix subclass is not the recommended way:PendingDeprecationWarning
     ignore:numpy.dtype size changed:RuntimeWarning
     ignore:Datablocks are deprecated:UserWarning
+    ignore:Deprecated call to `pkg_resources.declare_namespace:DeprecationWarning
 junit_family = legacy
 markers =
     regression: dxtbx regression test

tests/command_line/test_print_header.py

@@ -1,18 +1,19 @@
 from __future__ import annotations
 
-import procrunner
+from dxtbx.command_line import print_header
 
 
-def test_print_header(dials_data):
+def test_print_header(dials_data, capsys):
     screen = dials_data("thaumatin_eiger_screen", pathlib=True)
     master = screen / "Therm_6_1_master.h5"
-    result = procrunner.run(["dxtbx.print_header", master])
-    assert not result.returncode and not result.stderr
+    print_header.run([str(master)])
 
     expected_output = [
         f"=== {master} ===",
         "Using header reader: FormatNXmxDLS16M",
     ]
 
+    captured = capsys.readouterr()
+    assert not captured.err
     for record in expected_output:
-        assert record.strip().encode("latin-1") in result.stdout, record
+        assert record.strip() in captured.out, record

tests/command_line/test_show_mask_info.py

@@ -1,12 +1,12 @@
 from __future__ import annotations
 
-import procrunner
+from dxtbx.command_line import show_mask_info
 
 
-def test_show_mask_info(dials_data):
+def test_show_mask_info(dials_data, capsys):
     data = dials_data("image_examples", pathlib=True) / "dectris_eiger_master.h5"
 
-    result = procrunner.run(["dxtbx.show_mask_info", data])
-    assert not result.returncode and not result.stderr
-
-    assert b"Module 0 has 637992 masked pixels of 10166590" in result.stdout
+    show_mask_info.run([str(data)])
+    captured = capsys.readouterr()
+    assert not captured.err
+    assert "Module 0 has 637992 masked pixels of 10166590" in captured.out