[Tarantool-patches] [PATCH v2 luajit 6/6] test: rewrite lj-49-bad-lightuserdata test in C

[Sergey Kaplun via Tarantool-patches <tarantool-patches@dev.tarantool.org>]

This patch rewrites the aforementioned test with the usage libtest
recently introduced. The approach is similar to the previous patch.

Nevertheless, glibc `assert()` is used to check the correctness
of the `mmap()` usage.

Part of tarantool/tarantool#7900
---
 .../lj-49-bad-lightuserdata.test.c}           | 47 ++++++++++---------
 test/tarantool-tests/CMakeLists.txt           |  1 -
 .../lj-49-bad-lightuserdata.test.lua          | 11 -----
 .../lj-49-bad-lightuserdata/CMakeLists.txt    |  1 -
 4 files changed, 25 insertions(+), 35 deletions(-)
 rename test/{tarantool-tests/lj-49-bad-lightuserdata/testlightuserdata.c => tarantool-c-tests/lj-49-bad-lightuserdata.test.c} (55%)
 delete mode 100644 test/tarantool-tests/lj-49-bad-lightuserdata.test.lua
 delete mode 100644 test/tarantool-tests/lj-49-bad-lightuserdata/CMakeLists.txt

diff --git a/test/tarantool-tests/lj-49-bad-lightuserdata/testlightuserdata.c b/test/tarantool-c-tests/lj-49-bad-lightuserdata.test.c
similarity index 55%
rename from test/tarantool-tests/lj-49-bad-lightuserdata/testlightuserdata.c
rename to test/tarantool-c-tests/lj-49-bad-lightuserdata.test.c
index 1b909fc6..a9cc4763 100644
--- a/test/tarantool-tests/lj-49-bad-lightuserdata/testlightuserdata.c
+++ b/test/tarantool-c-tests/lj-49-bad-lightuserdata.test.c
@@ -1,16 +1,21 @@
-#include <lua.h>
-#include <lauxlib.h>
+#include "lua.h"
+#include "lauxlib.h"
 
 #include <sys/mman.h>
 #include <unistd.h>
 
-#undef NDEBUG
-#include <assert.h>
+#include "test.h"
+#include "utils.h"
 
 #define START ((void *)-1)
 
-static int crafted_ptr(lua_State *L)
+/* XXX: Still need normal assert to validate mmap correctness. */
+#undef NDEBUG
+#include <assert.h>
+
+static int crafted_ptr(void *test_state)
 {
+	lua_State *L = test_state;
 	/*
 	 * We know that for arm64 at least 48 bits are available.
 	 * So emulate manually push of lightuseradata within
@@ -18,15 +23,15 @@ static int crafted_ptr(lua_State *L)
 	 */
 	void *longptr = (void *)(1llu << 48);
 	lua_pushlightuserdata(L, longptr);
-	assert(longptr == lua_topointer(L, -1));
+	assert_ptr_equal(longptr, lua_topointer(L, -1));
 	/* Clear our stack. */
 	lua_pop(L, 0);
-	lua_pushboolean(L, 1);
-	return 1;
+	return TEST_EXIT_SUCCESS;
 }
 
-static int mmaped_ptr(lua_State *L)
+static int mmaped_ptr(void *test_state)
 {
+	lua_State *L = test_state;
 	/*
 	 * If start mapping address is not NULL, then the kernel
 	 * takes it as a hint about where to place the mapping, so
@@ -38,24 +43,22 @@ static int mmaped_ptr(lua_State *L)
 			    -1, 0);
 	if (mmaped != MAP_FAILED) {
 		lua_pushlightuserdata(L, mmaped);
-		assert(mmaped == lua_topointer(L, -1));
+		assert_ptr_equal(mmaped, lua_topointer(L, -1));
 		assert(munmap(mmaped, pagesize) == 0);
 	}
 	/* Clear our stack. */
 	lua_pop(L, 0);
-	lua_pushboolean(L, 1);
-	return 1;
+	return TEST_EXIT_SUCCESS;
 }
 
-static const struct luaL_Reg testlightuserdata[] = {
-	{"crafted_ptr", crafted_ptr},
-	{"mmaped_ptr", mmaped_ptr},
-	{NULL, NULL}
-};
-
-LUA_API int luaopen_testlightuserdata(lua_State *L)
+int main(void)
 {
-	luaL_register(L, "testlightuserdata", testlightuserdata);
-	return 1;
+	lua_State *L = utils_lua_init();
+	const struct test_unit tgroup[] = {
+		test_unit_new(crafted_ptr),
+		test_unit_new(mmaped_ptr)
+	};
+	const int test_result = test_run_group(tgroup, L);
+	utils_lua_close(L);
+	return test_result;
 }
-
diff --git a/test/tarantool-tests/CMakeLists.txt b/test/tarantool-tests/CMakeLists.txt
index b1c7207f..527905b6 100644
--- a/test/tarantool-tests/CMakeLists.txt
+++ b/test/tarantool-tests/CMakeLists.txt
@@ -61,7 +61,6 @@ add_subdirectory(gh-5813-resolving-of-c-symbols/gnuhash)
 add_subdirectory(gh-5813-resolving-of-c-symbols/stripped)
 add_subdirectory(gh-6098-fix-side-exit-patching-on-arm64)
 add_subdirectory(gh-6189-cur_L)
-add_subdirectory(lj-49-bad-lightuserdata)
 add_subdirectory(lj-416-xor-before-jcc)
 add_subdirectory(lj-601-fix-gc-finderrfunc)
 add_subdirectory(lj-727-lightuserdata-itern)
diff --git a/test/tarantool-tests/lj-49-bad-lightuserdata.test.lua b/test/tarantool-tests/lj-49-bad-lightuserdata.test.lua
deleted file mode 100644
index 94a743c7..00000000
--- a/test/tarantool-tests/lj-49-bad-lightuserdata.test.lua
+++ /dev/null
@@ -1,11 +0,0 @@
-local tap = require('tap')
-
-local test = tap.test('lj-49-bad-lightuserdata')
-test:plan(2)
-
-local testlightuserdata = require('testlightuserdata')
-
-test:ok(testlightuserdata.crafted_ptr())
-test:ok(testlightuserdata.mmaped_ptr())
-
-os.exit(test:check() and 0 or 1)
diff --git a/test/tarantool-tests/lj-49-bad-lightuserdata/CMakeLists.txt b/test/tarantool-tests/lj-49-bad-lightuserdata/CMakeLists.txt
deleted file mode 100644
index ec6bb62c..00000000
--- a/test/tarantool-tests/lj-49-bad-lightuserdata/CMakeLists.txt
+++ /dev/null
@@ -1 +0,0 @@
-BuildTestCLib(testlightuserdata testlightuserdata.c)
-- 
2.34.1