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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 EvalCommandTest do
use ExUnit.Case, async: false
import TestHelper
import ExUnit.CaptureIO
@command RabbitMQ.CLI.Ctl.Commands.EvalCommand
setup_all do
RabbitMQ.CLI.Core.Distribution.start()
:ok
end
setup _ do
{:ok, opts: %{node: get_rabbit_hostname()}}
end
test "validate: providing no arguments succeeds" do
# expression is expected to be provided via standard input
assert @command.validate([], %{}) == :ok
end
test "validate: empty expression to eval fails validation" do
assert @command.validate([""], %{}) == {:validation_failure, "Expression must not be blank"}
assert @command.validate(["", "foo"], %{}) == {:validation_failure, "Expression must not be blank"}
end
test "validate: syntax error in expression to eval fails validation" do
assert @command.validate(["foo bar"], %{}) == {:validation_failure, "syntax error before: bar"}
assert @command.validate(["foo bar", "foo"], %{}) == {:validation_failure, "syntax error before: bar"}
end
test "run: request to a non-existent node returns a badrpc", _context do
opts = %{node: :jake@thedog, timeout: 200}
assert match?({:badrpc, _}, @command.run(["ok."], opts))
end
test "run: evaluates provided Erlang expression", context do
assert @command.run(["foo."], context[:opts]) == {:ok, :foo}
assert @command.run(["length([1,2,3])."], context[:opts]) == {:ok, 3}
assert @command.run(["lists:sum([1,2,3])."], context[:opts]) == {:ok, 6}
{:ok, apps} = @command.run(["application:loaded_applications()."], context[:opts])
assert is_list(apps)
end
test "run: evaluates provided expression on the target server node", context do
{:ok, apps} = @command.run(["application:loaded_applications()."], context[:opts])
assert is_list(apps)
assert List.keymember?(apps, :rabbit, 0)
end
test "run: returns stdout output", context do
assert capture_io(fn ->
assert @command.run(["io:format(\"output\")."], context[:opts]) == {:ok, :ok}
end) == "output"
end
test "run: passes parameters to the expression as positional/numerical variables", context do
assert @command.run(["binary_to_atom(_1, utf8).", "foo"], context[:opts]) == {:ok, :foo}
assert @command.run(["{_1, _2}.", "foo", "bar"], context[:opts]) == {:ok, {"foo", "bar"}}
end
test "run: passes globally recognised options as named variables", context do
assert @command.run(["{_vhost, _node}."], Map.put(context[:opts], :vhost, "a-node")) ==
{:ok, {"a-node", context[:opts][:node]}}
end
end
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