BUG: collect doctests from docstrings of data descriptors

cross-ref python/cpython#127962
numpy/numpy#28002

scipy_doctest/impl.py

@@ -1,5 +1,6 @@
 import re
 import warnings
+import inspect
 import doctest
 from doctest import NORMALIZE_WHITESPACE, ELLIPSIS, IGNORE_EXCEPTION_DETAIL
 from itertools import zip_longest
@@ -538,6 +539,19 @@ def find(self, obj, name=None, module=None, globs=None, extraglobs=None):
         # XXX: does this make similar checks in testmod/testfile duplicate?
         if module not in self.config.skiplist:   
             tests = super().find(obj, name, module, globs, extraglobs)
+
+            if inspect.isclass(obj):
+                descriptors = [
+                    (name_, method)
+                    for name_, method in inspect.getmembers(obj)
+                    if inspect.isdatadescriptor(method)
+                ]
+
+                for name_, method in descriptors:
+                    tests += super().find(
+                        method, f'{name}.{name_}', module, globs, extraglobs
+                    )
+
             return tests
 
 

scipy_doctest/tests/test_finder.py

@@ -1,10 +1,13 @@
 import pytest
 
+import numpy as np
+
 from . import finder_cases
 from ..util import get_all_list, get_public_objects
 from ..impl import DTFinder, DTConfig
 from ..frontend import find_doctests
 
+
 def test_get_all_list():
     items, depr, other = get_all_list(finder_cases)
     assert sorted(items) == ['Klass', 'func']
@@ -168,3 +171,11 @@ def test_dtfinder_config():
     config = DTConfig()
     finder = DTFinder(config=config)
     assert finder.config is config
+
+
+@pytest.mark.skipif(np.__version__ < '2', reason="XXX check if works on numpy 1.x")
+def test_descriptors_get_collected():
+    tests = find_doctests(np, strategy=[np.dtype])
+    names = [test.name for test in tests]
+    assert 'numpy.dtype.kind' in names   # was previously missing
+