1 files changed, 39 insertions, 0 deletions
diff --git a/deps/rabbitmq_cli/test/diagnostics/discover_peers_command_test.exs b/deps/rabbitmq_cli/test/diagnostics/discover_peers_command_test.exs
new file mode 100644
index 0000000000..dd54d6eed9
--- /dev/null
+++ b/deps/rabbitmq_cli/test/diagnostics/discover_peers_command_test.exs
@@ -0,0 +1,39 @@
+## This Source Code Form is subject to the terms of the Mozilla Public
+## License, v. 2.0. If a copy of the MPL was not distributed with this
+## file, You can obtain one at https://mozilla.org/MPL/2.0/.
+##
+## Copyright (c) 2007-2020 VMware, Inc. or its affiliates.  All rights reserved.
+
+defmodule DiscoverPeersCommandTest do
+  use ExUnit.Case, async: false
+  import TestHelper
+
+  @command RabbitMQ.CLI.Diagnostics.Commands.DiscoverPeersCommand
+  setup_all do
+    RabbitMQ.CLI.Core.Distribution.start()
+    :ok
+  end
+
+  setup context do
+    {:ok, opts: %{node: get_rabbit_hostname(), timeout: context[:test_timeout]}}
+  end
+
+  test "validate: providing no arguments passes validation", context do
+    assert @command.validate([], context[:opts]) == :ok
+  end
+
+  test "validate: providing any arguments fails validation", context do
+    assert @command.validate(["a"], context[:opts]) ==
+      {:validation_failure, :too_many_args}
+  end
+
+  @tag test_timeout: 3000
+  test "run: targeting an unreachable node throws a badrpc", context do
+    assert match?({:badrpc, _}, @command.run([], Map.merge(context[:opts], %{node: :jake@thedog})))
+  end
+
+  @tag test_timeout: 15000
+  test "run: returns a list of nodes when the backend isn't configured", context do
+    assert match?({:ok, {[], _}}, @command.run([], context[:opts]))
+  end
+end