From 050f68cf5df486a632a73ccc5f1d5a907187a114 Mon Sep 17 00:00:00 2001
From: "Zaiming (Stone) Shi" <zmstone@gmail.com>
Date: Tue, 19 Jul 2022 20:13:54 +0200
Subject: [PATCH] test: allow missing schema for app in tests

---
 apps/emqx/test/emqx_common_test_helpers.erl | 12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)

diff --git a/apps/emqx/test/emqx_common_test_helpers.erl b/apps/emqx/test/emqx_common_test_helpers.erl
index b3292ded3..ce998656a 100644
--- a/apps/emqx/test/emqx_common_test_helpers.erl
+++ b/apps/emqx/test/emqx_common_test_helpers.erl
@@ -181,11 +181,15 @@ start_app(App, Handler) ->
 app_conf_file(emqx_conf) -> "emqx.conf.all";
 app_conf_file(App) -> atom_to_list(App) ++ ".conf".
 
-%% TODO: get rid of cuttlefish
 app_schema(App) ->
     Mod = list_to_atom(atom_to_list(App) ++ "_schema"),
-    true = is_list(Mod:roots()),
-    Mod.
+    try
+        true = is_list(Mod:roots()),
+        Mod
+    catch
+        error:undef ->
+            no_schema
+    end.
 
 mustache_vars(App) ->
     [
@@ -221,6 +225,8 @@ render_config_file(ConfigFile, Vars0) ->
     ok = file:write_file(NewName, Targ),
     NewName.
 
+read_schema_configs(no_schema, _ConfigFile) ->
+    ok;
 read_schema_configs(Schema, ConfigFile) ->
     NewConfig = generate_config(Schema, ConfigFile),
     lists:foreach(