test: simplify ASAN detection

test/cmakeconfig/paths.lua.in

@@ -6,6 +6,7 @@ for p in ("${TEST_INCLUDE_DIRS}" .. ";"):gmatch("[^;]+") do
 end
 
 M.translations_enabled = "${ENABLE_TRANSLATIONS}" == "ON"
+M.is_asan = "${ENABLE_ASAN_UBSAN}" == "ON"
 M.vterm_test_file = "${VTERM_TEST_FILE}"
 M.test_build_dir = "${CMAKE_BINARY_DIR}"
 M.test_source_path = "${CMAKE_SOURCE_DIR}"

test/functional/legacy/memory_usage_spec.lua

@@ -13,10 +13,9 @@ local load_adjust = n.load_adjust
 local write_file = t.write_file
 local is_os = t.is_os
 local is_ci = t.is_ci
-local is_asan = n.is_asan
 
 clear()
-if is_asan() then
+if t.is_asan() then
   pending('ASAN build is difficult to estimate memory usage', function() end)
   return
 elseif is_os('win') then

test/functional/testnvim.lua

@@ -905,11 +905,6 @@ function M.testprg(name)
   return ('%s/%s%s'):format(M.nvim_dir, name, ext)
 end
 
-function M.is_asan()
-  local version = M.eval('execute("verbose version")')
-  return version:match('-fsanitize=[a-z,]*address')
-end
-
 --- Returns a valid, platform-independent Nvim listen address.
 --- Useful for communicating with child instances.
 ---

test/testutil.lua

@@ -418,6 +418,10 @@ function M.is_arch(s)
   return s == architecture
 end
 
+function M.is_asan()
+  return M.paths.is_asan
+end
+
 local tmpname_id = 0
 local tmpdir = os.getenv('TMPDIR') or os.getenv('TEMP')
 local tmpdir_is_local = not not (tmpdir and tmpdir:find('Xtest'))

test/unit/testutil.lua

@@ -876,18 +876,6 @@ local function ptr2key(ptr)
   return ffi.string(s)
 end
 
-local function is_asan()
-  cimport('./src/nvim/version.h')
-  local status, res = pcall(function()
-    return lib.version_cflags
-  end)
-  if status then
-    return ffi.string(res):match('-fsanitize=[a-z,]*address')
-  else
-    return false
-  end
-end
-
 --- @class test.unit.testutil.module
 local M = {
   cimport = cimport,
@@ -916,7 +904,6 @@ local M = {
   ptr2addr = ptr2addr,
   ptr2key = ptr2key,
   debug_log = debug_log,
-  is_asan = is_asan,
 }
 --- @class test.unit.testutil: test.unit.testutil.module, test.testutil
 M = vim.tbl_extend('error', M, t_global)