[Tarantool-patches] [PATCH luajit 1/2] test: set DYLD_LIBRARY_PATH environment variable

[Sergey Kaplun]

This patch allows to use tests with `ffi.load()` without usage of
`utils.selfrun()` by setting the DYLD_LIBRARY_PATH variable for the
process directly via additional env command. Also, this commit "reverts"
part of the commit fae1681dd1c117a913f99cbeed0ca2b87cf581a1 ('test: fix
dynamic modules loading on MacOS') since there is no need to tweak
environment while running those tests.

Needed for tarantool/tarantool#6548
---
 test/tarantool-tests/CMakeLists.txt           | 19 +++++++++++--------
 .../gh-4427-ffi-sandwich.test.lua             |  4 ----
 .../lj-flush-on-trace.test.lua                |  4 ----
 test/tarantool-tests/utils.lua                | 17 -----------------
 4 files changed, 11 insertions(+), 33 deletions(-)

diff --git a/test/tarantool-tests/CMakeLists.txt b/test/tarantool-tests/CMakeLists.txt
index a872fa5e..992556d9 100644
--- a/test/tarantool-tests/CMakeLists.txt
+++ b/test/tarantool-tests/CMakeLists.txt
@@ -94,22 +94,21 @@ if(CMAKE_SYSTEM_NAME STREQUAL "Darwin")
   # since some programs sanitize the environment before they start
   # child processes. Specifically, environment variables starting
   # with DYLD_ and LD_ are unset for child process started by
-  # system programs (like /usr/bin/env used for preparing testing
-  # environment). For more info, see the docs[2] below.
+  # other programs (like /usr/bin/prove --exec using for launching
+  # test suite). For more info, see the docs[2] below.
   #
   # These environment variables are used by FFI machinery to find
   # the proper shared library, hence we can still tweak testing
   # environment before calling <ffi.load>. However, the value
   # can't be passed via the standard environment variable, so we
-  # prepend TEST_ prefix to its name to get around SIP magic
-  # tricks. Finally, to set the variable required by FFI machinery
-  # the introduced <utils.tweakenv> routine is used.
+  # use env call in prove's --exec flag value to get around SIP
+  # magic tricks.
   #
   # [1]: https://support.apple.com/en-us/HT204899
   # [2]: https://developer.apple.com/library/archive/documentation/Security/Conceptual/System_Integrity_Protection_Guide/RuntimeProtections/RuntimeProtections.html
-  list(APPEND LUA_TEST_ENV TEST_DYLD_LIBRARY_PATH="${LD_LIBRARY_PATH}")
+  list(APPEND LUA_TEST_ENV_MORE DYLD_LIBRARY_PATH="${LD_LIBRARY_PATH}")
 else()
-  list(APPEND LUA_TEST_ENV LD_LIBRARY_PATH="${LD_LIBRARY_PATH}")
+  list(APPEND LUA_TEST_ENV_MORE LD_LIBRARY_PATH="${LD_LIBRARY_PATH}")
 endif()
 
 # LUA_CPATH and LD_LIBRARY_PATH variables and also TESTLIBS list
@@ -120,10 +119,14 @@ add_custom_target(tarantool-tests
 add_custom_command(TARGET tarantool-tests
   COMMENT "Running Tarantool tests"
   COMMAND
+  # XXX: We can't move everything to the "inner" env, since there
+  # are some issues with escaping ';' for different shells. As
+  # a result LUA_PATH/LUA_CPATH variables are set via the "outer"
+  # env, since they are not stripped by SIP like LD_*/DYLD_* are.
   env
     ${LUA_TEST_ENV}
     ${PROVE} ${CMAKE_CURRENT_SOURCE_DIR}
-      --exec '${LUAJIT_TEST_COMMAND}'
+      --exec 'env ${LUA_TEST_ENV_MORE} ${LUAJIT_TEST_COMMAND}'
       --ext ${LUA_TEST_SUFFIX}
       ${LUA_TEST_FLAGS}
   WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}
diff --git a/test/tarantool-tests/gh-4427-ffi-sandwich.test.lua b/test/tarantool-tests/gh-4427-ffi-sandwich.test.lua
index 3e6801a5..dd02130c 100644
--- a/test/tarantool-tests/gh-4427-ffi-sandwich.test.lua
+++ b/test/tarantool-tests/gh-4427-ffi-sandwich.test.lua
@@ -3,10 +3,6 @@ local utils = require('utils')
 -- Disabled on *BSD due to #4819.
 utils.skipcond(jit.os == 'BSD', 'Disabled due to #4819')
 
--- XXX: Tweak the process environment to get around SIP.
--- See the comment in suite CMakeLists.txt for more info.
-utils.tweakenv(jit.os == 'OSX', 'DYLD_LIBRARY_PATH')
-
 utils.selfrun(arg, {
   {
     arg = {
diff --git a/test/tarantool-tests/lj-flush-on-trace.test.lua b/test/tarantool-tests/lj-flush-on-trace.test.lua
index 81fd6e8f..c46b93f0 100644
--- a/test/tarantool-tests/lj-flush-on-trace.test.lua
+++ b/test/tarantool-tests/lj-flush-on-trace.test.lua
@@ -3,10 +3,6 @@ local utils = require('utils')
 -- Disabled on *BSD due to #4819.
 utils.skipcond(jit.os == 'BSD', 'Disabled due to #4819')
 
--- XXX: Tweak the process environment to get around SIP.
--- See the comment in suite CMakeLists.txt for more info.
-utils.tweakenv(jit.os == 'OSX', 'DYLD_LIBRARY_PATH')
-
 utils.selfrun(arg, {
   {
     arg = {
diff --git a/test/tarantool-tests/utils.lua b/test/tarantool-tests/utils.lua
index 5bd42b30..3b809515 100644
--- a/test/tarantool-tests/utils.lua
+++ b/test/tarantool-tests/utils.lua
@@ -1,13 +1,8 @@
 local M = {}
 
-local ffi = require('ffi')
 local tap = require('tap')
 local bc = require('jit.bc')
 
-ffi.cdef([[
-  int setenv(const char *name, const char *value, int overwrite);
-]])
-
 local function luacmd(args)
   -- arg[-1] is guaranteed to be not nil.
   local idx = -2
@@ -78,18 +73,6 @@ function M.skipcond(condition, message)
   os.exit(test:check() and 0 or 1)
 end
 
-function M.tweakenv(condition, variable)
-  if not condition or os.getenv(variable) then return end
-  local testvar = assert(os.getenv('TEST_' .. variable),
-                         ('Neither %s nor auxiliary TEST_%s variables are set')
-                         :format(variable, variable))
-  -- XXX: The third argument of setenv(3) is set to zero to forbid
-  -- overwriting the <variable>. Since there is the check above
-  -- whether this <variable> is set in the process environment, it
-  -- just makes this solution foolproof.
-  ffi.C.setenv(variable, testvar, 0)
-end
-
 function M.hasbc(f, bytecode)
   assert(type(f) == 'function', 'argument #1 should be a function')
   assert(type(bytecode) == 'string', 'argument #2 should be a string')
-- 
2.33.1