Test reorganization and cleanup. (#18270)

- Correct directory name in test/README.md
- Move code-smell tests to test/sanity/code-smell
- Update code-smell.sh to use new script paths
- Add test/integration/target-prefixes.win for ansible-test
- Move module unit tests to match module directory layout

test/units/modules/core/packaging/os/test_apt.py

@@ -0,0 +1,50 @@
+import collections
+import os
+import sys
+
+from ansible.compat.tests import mock
+from ansible.compat.tests import unittest
+
+try:
+    from ansible.modules.core.packaging.os.apt import (
+        expand_pkgspec_from_fnmatches,
+    )
+except:
+    # Need some more module_utils work (porting urls.py) before we can test
+    # modules.  So don't error out in this case.
+    if sys.version_info[0] >= 3:
+        pass
+
+
+class AptExpandPkgspecTestCase(unittest.TestCase):
+
+    def setUp(self):
+        FakePackage = collections.namedtuple("Package", ("name",))
+        self.fake_cache = [ FakePackage("apt"),
+                            FakePackage("apt-utils"),
+                            FakePackage("not-selected"),
+        ]
+
+    def test_trivial(self):
+        foo = ["apt"]
+        self.assertEqual(
+            expand_pkgspec_from_fnmatches(None, foo, self.fake_cache), foo)
+
+    def test_version_wildcard(self):
+        foo = ["apt=1.0*"]
+        self.assertEqual(
+            expand_pkgspec_from_fnmatches(None, foo, self.fake_cache), foo)
+
+    def test_pkgname_wildcard_version_wildcard(self):
+        foo = ["apt*=1.0*"]
+        m_mock = mock.Mock()
+        self.assertEqual(
+            expand_pkgspec_from_fnmatches(m_mock, foo, self.fake_cache),
+            ['apt', 'apt-utils'])
+
+    def test_pkgname_expands(self):
+        foo = ["apt*"]
+        m_mock = mock.Mock()
+        self.assertEqual(
+            expand_pkgspec_from_fnmatches(m_mock, foo, self.fake_cache),
+            ["apt", "apt-utils"])