Tests: fix config creation error handling

1 files changed, 1 insertions, 2 deletions

diff --git a/test/test_environment.lua b/test/test_environment.lua
index 1edf3987..9f22e701 100644
--- a/test/test_environment.lua
+++ b/test/test_environment.lua
@@ -198,8 +198,7 @@ end
 -- @param config_path string: path where to save config file
 -- @param config_content string: content of this config file
 local function create_config(config_path, config_content)
-   local file, err = io.open(config_path, "w+")
-   if not file then return nil, err end
+   local file = assert(io.open(config_path, "w"))
    file:write(config_content)
    file:close()
 end