Merge remote-tracking branch 'origin/master' into stream-timestamp-offsetstream-timestamp-offset

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diff --git a/deps/rabbitmq_cli/test/core/node_name_test.exs b/deps/rabbitmq_cli/test/core/node_name_test.exs
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+## 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 NodeNameTest do
+  use ExUnit.Case, async: true
+
+  @subject RabbitMQ.CLI.Core.NodeName
+
+  test "shortnames: RabbitMQ nodename is properly formed from atom" do
+    want = String.to_atom("rabbit@#{:inet_db.gethostname()}")
+    {:ok, got} = @subject.create(:rabbit, :shortnames)
+    assert want == got
+  end
+
+  test "shortnames: RabbitMQ nodename is properly formed from string" do
+    want = String.to_atom("rabbit@#{:inet_db.gethostname()}")
+    {:ok, got} = @subject.create("rabbit", :shortnames)
+    assert want == got
+  end
+
+  test "shortnames: RabbitMQ nodename is properly formed with trailing @" do
+    want = String.to_atom("rabbit@#{:inet_db.gethostname()}")
+    {:ok, got} = @subject.create(:rabbit@, :shortnames)
+    assert want == got
+  end
+
+  test "shortnames: RabbitMQ nodename is properly formed with host part" do
+    want = :rabbit@foofoo
+    {:ok, got} = @subject.create(want, :shortnames)
+    assert want == got
+  end
+
+  test "shortnames: nodename head only supports alphanumerics, underscores and hyphens in name head" do
+    {:error, {:node_name, :invalid_node_name_head}} = @subject.create("кириллица", :shortnames)
+  end
+
+  test "longnames: RabbitMQ nodename is properly formed from atom" do
+    {:ok, got} = @subject.create(:rabbit, :longnames)
+    assert Atom.to_string(got) =~ ~r/rabbit@[\w\-]+\.\w+/
+  end
+
+  test "longnames: RabbitMQ nodename is properly formed from string" do
+    {:ok, got} = @subject.create("rabbit", :longnames)
+    assert Atom.to_string(got) =~ ~r/rabbit@[\w\-]+\.\w+/
+  end
+
+  test "longnames: RabbitMQ nodename is properly formed from atom with domain" do
+    want = :"rabbit@localhost.localdomain"
+    {:ok, got} = @subject.create(want, :longnames)
+    assert want == got
+  end
+
+  test "longnames: RabbitMQ nodename is properly formed from string with domain" do
+    name_str = "rabbit@localhost.localdomain"
+    want = String.to_atom(name_str)
+    {:ok, got} = @subject.create(name_str, :longnames)
+    assert want == got
+  end
+
+  test "longnames: RabbitMQ nodename is properly formed from string with partial domain" do
+    name_str = "rabbit@localhost"
+    want = String.to_atom(name_str <> "." <> @subject.domain())
+    {:ok, got} = @subject.create(name_str, :longnames)
+    assert want == got
+  end
+
+  test "longnames: nodename head only supports alphanumerics, underscores and hyphens in name head" do
+    {:error, {:node_name, :invalid_node_name_head}} = @subject.create("кириллица", :longnames)
+  end
+end