Enable safe NPM replica convergence

tests/test_npm_adapter.py

@@ -94,7 +94,7 @@ class NpmAdapterTests(unittest.TestCase):
         self.assertIs(adapters[0].client, first_client)
         self.assertIs(adapters[1].client, second_client)
 
-    def test_capabilities_cover_discovery_and_verify_only(self):
+    def test_capabilities_cover_discovery_apply_and_verify(self):
         adapter = self.adapter(Mock())
 
         self.assertEqual(
@@ -105,6 +105,10 @@ class NpmAdapterTests(unittest.TestCase):
                         PROXY_HOSTS,
                         CapabilityOperation.DISCOVER,
                     ),
+                    Capability(
+                        PROXY_HOSTS,
+                        CapabilityOperation.APPLY,
+                    ),
                     Capability(
                         PROXY_HOSTS,
                         CapabilityOperation.VERIFY,
@@ -113,6 +117,10 @@ class NpmAdapterTests(unittest.TestCase):
                         CERTIFICATES,
                         CapabilityOperation.DISCOVER,
                     ),
+                    Capability(
+                        CERTIFICATES,
+                        CapabilityOperation.APPLY,
+                    ),
                     Capability(
                         CERTIFICATES,
                         CapabilityOperation.VERIFY,
@@ -121,21 +129,6 @@ class NpmAdapterTests(unittest.TestCase):
             ),
         )
 
-        self.assertNotIn(
-            Capability(
-                PROXY_HOSTS,
-                CapabilityOperation.APPLY,
-            ),
-            adapter.capabilities,
-        )
-        self.assertNotIn(
-            Capability(
-                CERTIFICATES,
-                CapabilityOperation.APPLY,
-            ),
-            adapter.capabilities,
-        )
-
     def test_discovers_proxy_hosts_with_endpoint_local_key(self):
         client = Mock()
         client.proxy_hosts.return_value = [