Tag distributed test as such to avoid flaky on regular ones

Author: jyeshe

.circleci/config.yml

@@ -131,7 +131,7 @@ workflows:
           execute:
             - run: sudo -u lightning mix do ecto.create, ecto.migrate
             - run:
-                command: sudo -u lightning mix coveralls.json -o ./test/reports
+                command: sudo -u lightning mix coveralls.json --exclude dist_integration -o ./test/reports
             - codecov/upload:
                 file: test/reports/excoveralls.json
             - store_test_results:

test/lightning/distributed_rate_limiter_test.exs

@@ -44,11 +44,12 @@ defmodule Lightning.DistributedRateLimiterTest do
       assert 500 < wait_ms and wait_ms <= 1_000
     end
 
-    # For testing the replication use manual procedure:
+    # For testing the replication use manual procedure or use this test case isolated to avoid interfering the tests above:
     # 0. Disable Endpoint server
     # 1. Run node1 on one terminal: iex --sname node1@localhost --cookie hordecookie -S mix phx.server
     # 2. Run node2 on another terminal: iex --sname node2@localhost --cookie hordecookie -S mix phx.server
     # 3. Call Lightning.DistributedRateLimiter.inspect_table() on both iex and they show the same ets table process and node.
+    @tag :dist_integration
     test "works on top of a single worker of a distributed dynamic supervisor" do
       {:ok, peer, _node1, node2} = start_nodes(:node1, :node2, ~c"localhost")