[Tarantool-patches] [PATCH 3/3] test: app-tap/logger -- test json in boottime logger

[Cyrill Gorcunov <gorcunov@gmail.com>]

Make sure we're allowed to setup json formatter before
box.cfg() call, ie that named boot-time logger.

Part-of #5121

Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
---
 test/app-tap/logger.test.lua | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/test/app-tap/logger.test.lua b/test/app-tap/logger.test.lua
index ae4a3b99a..41276c3d0 100755
--- a/test/app-tap/logger.test.lua
+++ b/test/app-tap/logger.test.lua
@@ -3,11 +3,13 @@
 local test = require('tap').test('log')
 test:plan(62)
 
--- gh-3946: Assertion failure when using log_format() before box.cfg()
+--
+-- gh-5121: Allow to use 'json' output before box.cfg()
+--
 local log = require('log')
-log.log_format('plain')
 _, err = pcall(log.log_format, 'json')
-test:ok(err:find("json can\'t be used") ~= nil)
+test:ok(err == nil)
+log.log_format('plain')
 
 --
 -- gh-689: various settings change from box.cfg/log.cfg interfaces
-- 
2.26.2