MOTOR-689: Add async wrapper for pymongo.encryption.ClientEncryption

setup.py

@@ -29,13 +29,14 @@
 with open("README.rst") as readme:
     long_description = readme.read()
 
-install_requires = ['pymongo>=3.11,<4']
+pymongo_ver = ">=3.11,<4"
+
+install_requires = ["pymongo" + pymongo_ver]
+
+extras_require = {'encryption': ["pymongo" + "[encryption]" + pymongo_ver]}
 
 tests_require = ['mockupdb>=1.4.0']
 
-extras_require = {
-    'encryption': ['pymongo[encryption]>=3.11,<4'],
-}
 
 class test(Command):
     description = "run the tests"

test/asyncio_tests/test_asyncio_encryption.py

@@ -42,8 +42,10 @@
     _HAVE_PYMONGOCRYPT = False
 
 
-@unittest.skipUnless(_HAVE_PYMONGOCRYPT, "pymongocrypt is a required dependency")
 class TestExplicitSimple(AsyncIOTestCase):
+    def setUp(self):
+        if not _HAVE_PYMONGOCRYPT:
+            self.fail("PyMongoCrypt is a required dependency")
     def assertEncrypted(self, val):
         self.assertIsInstance(val, Binary)
         self.assertEqual(val.subtype, 6)