[Tarantool-patches] [PATCH 2/6] Fix luacheck warnings in test/

[Vladislav Shpilevoy]

Thanks for the patch!

Consider more fixes below and on the branch in a separate commit.
That allowed to remove some warning mutes from the luacheck
config.

====================

    Review fixes: test/

diff --git a/test/app-tap/console_lua.test.lua b/test/app-tap/console_lua.test.lua
index 3ed6aad97..d0e290d9c 100755
--- a/test/app-tap/console_lua.test.lua
+++ b/test/app-tap/console_lua.test.lua
@@ -13,7 +13,7 @@ local CONSOLE_SOCKET = 'console-lua.sock'
 --
 -- Set Lua output mode.
 local function set_lua_output(client, opts)
-    local opts = opts or {}
+    opts = opts or {}
     local mode = opts.block and 'lua,block' or 'lua'
     client:write(('\\set output %s\n'):format(mode))
     assert(client:read(EOL), 'true' .. EOL, 'set lua output mode')
diff --git a/test/app-tap/fail_main.test.lua b/test/app-tap/fail_main.test.lua
index f8c45bf6f..917577f46 100755
--- a/test/app-tap/fail_main.test.lua
+++ b/test/app-tap/fail_main.test.lua
@@ -16,7 +16,7 @@ function run_script(code)
     script:close()
     local output_file = fio.pathjoin(fio.cwd(), 'out.txt')
     local cmd = [[/bin/sh -c 'cd "%s" && "%s" ./script.lua 0> %s 2> %s']]
-    local code = os.execute(
+    code = os.execute(
         string.format(cmd, dir, tarantool_bin, output_file, output_file)
     )
     fio.rmtree(dir)
diff --git a/test/app-tap/tarantoolctl.test.lua b/test/app-tap/tarantoolctl.test.lua
index 4d7059559..3fda53274 100755
--- a/test/app-tap/tarantoolctl.test.lua
+++ b/test/app-tap/tarantoolctl.test.lua
@@ -97,23 +97,14 @@ local function tctl_wait_start(dir, name)
             fiber.sleep(0.01)
         end
         ::again::
-        while true do
-            local stat, nb = pcall(require('net.box').new, path, {
-                wait_connected = true, console = true
-            })
-            if stat == false then
-                fiber.sleep(0.01)
-                goto again
-            else
-                break
-            end
-            local stat, msg = pcall(nb.eval, nb, 'require("fiber").time()')
-            if stat == false then
-                fiber.sleep(0.01)
-            else
-                break
-            end
+        local stat, nb = pcall(require('net.box').new, path, {
+            wait_connected = true, console = true
+        })
+        if stat == false then
+            fiber.sleep(0.01)
+            goto again
         end
+        return
     end
 end