Add test cases for emqx_boot module

test/emqx_boot_SUITE.erl

@@ -0,0 +1,43 @@
+%%--------------------------------------------------------------------
+%% Copyright (c) 2019 EMQ Technologies Co., Ltd. All Rights Reserved.
+%%
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
+%%--------------------------------------------------------------------
+
+-module(emqx_boot_SUITE).
+
+-compile(export_all).
+-compile(nowarn_export_all).
+
+-include_lib("eunit/include/eunit.hrl").
+
+all() -> emqx_ct:all(?MODULE).
+
+t_is_enabled(_) ->
+    ok = application:set_env(emqx, boot_modules, all),
+    ?assert(emqx_boot:is_enabled(router)),
+    ?assert(emqx_boot:is_enabled(broker)),
+    ?assert(emqx_boot:is_enabled(listeners)),
+    ok = application:set_env(emqx, boot_modules, [router]),
+    ?assert(emqx_boot:is_enabled(router)),
+    ?assertNot(emqx_boot:is_enabled(broker)),
+    ?assertNot(emqx_boot:is_enabled(listeners)),
+    ok = application:set_env(emqx, boot_modules, [router, broker]),
+    ?assert(emqx_boot:is_enabled(router)),
+    ?assert(emqx_boot:is_enabled(broker)),
+    ?assertNot(emqx_boot:is_enabled(listeners)),
+    ok = application:set_env(emqx, boot_modules, [router, broker, listeners]),
+    ?assert(emqx_boot:is_enabled(router)),
+    ?assert(emqx_boot:is_enabled(broker)),
+    ?assert(emqx_boot:is_enabled(listeners)).
+