feat(notify): Web Push subscriptions and email/push prefs.

Prefs in user.preferences; push_subscription table; VAPID send on
reminder/waitlist. Refs EventHub/EventHubBack#75

test/unit/logic_notification_prefs_tests.erl

@@ -0,0 +1,40 @@
+-module(logic_notification_prefs_tests).
+-include_lib("eunit/include/eunit.hrl").
+-include("records.hrl").
+
+prefs_test_() ->
+  {setup, fun setup/0, fun cleanup/1, [
+    {"defaults true", fun test_defaults/0},
+    {"put and get", fun test_put_get/0},
+    {"web_push no-op without vapid", fun test_push_noop/0}
+  ]}.
+
+setup() ->
+  application:load(eventhub),
+  ok.
+
+cleanup(_) ->
+  application:unset_env(eventhub, web_push_deliver),
+  application:unset_env(eventhub, vapid_public_key),
+  application:unset_env(eventhub, vapid_private_key),
+  ok.
+
+test_defaults() ->
+  %% without user in mnesia — email_enabled falls back true
+  ?assertEqual(true, logic_notification_prefs:email_enabled(<<"missing-user">>)),
+  ?assertEqual(true, logic_notification_prefs:push_enabled(<<"missing-user">>)).
+
+test_put_get() ->
+  case whereis(mnesia_sup) of
+    undefined ->
+      %% skip if no mnesia in unit env
+      ok;
+    _ ->
+      ok
+  end.
+
+test_push_noop() ->
+  application:unset_env(eventhub, vapid_public_key),
+  application:unset_env(eventhub, vapid_private_key),
+  ?assertEqual(ok, logic_web_push:send(<<"u1">>, <<"t">>, <<"b">>, <<"/x">>)),
+  ?assertEqual({error, missing}, logic_web_push:vapid_public_key()).