BUG: Fix module level import requires

pytest_doctestplus/plugin.py

@@ -673,6 +673,7 @@ def check_required_modules(cls, mods):
             if mod in cls._import_cache:
                 if not cls._import_cache[mod]:
                     return False
+                continue
 
             if cls._module_checker.check(mod):
                 cls._import_cache[mod] = True
@@ -714,9 +715,17 @@ def test_filter(test):
                 for pats, mods in reqs.items():
                     if not isinstance(pats, tuple):
                         pats = (pats,)
+
                     for pat in pats:
-                        if not fnmatch.fnmatch(test.name, '.'.join((name, pat))):
-                            continue
+                        if pat == '*':
+                            pass
+                        elif pat == '.' and test.name == name:
+                            pass
+                        elif fnmatch.fnmatch(test.name, '.'.join((name, pat))):
+                            pass
+                        else:
+                            continue  # The pattern does not apply
+
                         if not self.check_required_modules(mods):
                             return False
                 return True

tests/python/doctests.py

@@ -1,12 +1,20 @@
 # Licensed under a 3-clause BSD style license - see LICENSE.rst
 
+"""
+Also module level skips should be matched with `*` and `.`, test at least
+the `.` version (the star would match all others too).
+
+>>> import foobar
+"""
+
 __doctest_skip__ = [
     'skip_this_test',
     'ClassWithSomeBadDocTests.this_test_fails',
     'ClassWithAllBadDocTests.*',
 ]
 
 __doctest_requires__ = {
+    '.': ['foobar'],
     'depends_on_foobar': ['foobar'],
     'depends_on_foobar_submodule': ['foobar.baz'],
     'depends_on_two_modules': ['os', 'foobar'],