From b75f374d9c301324b5894647deaa021e3eaaa782 Mon Sep 17 00:00:00 2001
From: Uli Schlachter <psychon@znc.in>
Date: Wed, 29 Jul 2015 21:01:38 +0200
Subject: [PATCH] Fix sporadic test failure due to lgi

With version 2.0rc5, Busted started cleaning up between tests more thoroughly.
The result was that it managed to unload and reload lgi. However, the C part of
lgi is not safe to be reloaded. This caused sporadic errors in the test suite
runs.

Work around this via a helper script that is run before Busted starts running
tests. When we load lgi in this helper script, it is loaded before Busted starts
saving and restoring everything and thus lgi won't ever be unloaded.

Signed-off-by: Uli Schlachter <psychon@znc.in>
---
 CMakeLists.txt   | 3 ++-
 spec/preload.lua | 4 ++++
 2 files changed, 6 insertions(+), 1 deletion(-)
 create mode 100644 spec/preload.lua

diff --git a/CMakeLists.txt b/CMakeLists.txt
index b79bf602..6a86e3f7 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -324,7 +324,8 @@ endif()
 find_program(BUSTED_EXECUTABLE busted)
 if(BUSTED_EXECUTABLE)
     add_custom_target(check-unit ALL
-        ${BUSTED_EXECUTABLE} "--lpath=${CMAKE_BINARY_DIR}/lib/?.lua;${CMAKE_BINARY_DIR}/lib/?/init.lua;spec/?.lua"
+        ${BUSTED_EXECUTABLE} "--helper=${CMAKE_SOURCE_DIR}/spec/preload.lua"
+        "--lpath=${CMAKE_BINARY_DIR}/lib/?.lua;${CMAKE_BINARY_DIR}/lib/?/init.lua;spec/?.lua"
         WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}
         COMMENT "Running unit tests"
         VERBATIM)
diff --git a/spec/preload.lua b/spec/preload.lua
new file mode 100644
index 00000000..9c5610f1
--- /dev/null
+++ b/spec/preload.lua
@@ -0,0 +1,4 @@
+-- This script is given to Busted via the --helper argument. Modules loaded here
+-- won't be cleared and reloaded by Busted. This is needed for lgi because lgi
+-- is not safe to reload and yet Busted manages to do this.
+require("lgi")