1 files changed, 14 insertions, 3 deletions
diff --git a/test/functional/legacy/memory_usage_spec.lua b/test/functional/legacy/memory_usage_spec.lua
index 8d25b9d927..eec89aa919 100644
--- a/test/functional/legacy/memory_usage_spec.lua
+++ b/test/functional/legacy/memory_usage_spec.lua
@@ -10,6 +10,7 @@ local source = helpers.source
 local poke_eventloop = helpers.poke_eventloop
 local uname = helpers.uname
 local load_adjust = helpers.load_adjust
+local write_file = helpers.write_file
 local isCI = helpers.isCI
 
 local function isasan()
@@ -84,6 +85,12 @@ setmetatable(monitor_memory_usage,
 end})
 
 describe('memory usage', function()
+  local tmpfile = 'X_memory_usage'
+
+  after_each(function()
+    os.remove(tmpfile)
+  end)
+
   local function check_result(tbl, status, result)
     if not status then
       print('')
@@ -103,7 +110,7 @@ describe('memory usage', function()
   it('function capture vargs', function()
     local pid = eval('getpid()')
     local before = monitor_memory_usage(pid)
-    source([[
+    write_file(tmpfile, [[
       func s:f(...)
         let x = a:000
       endfunc
@@ -111,6 +118,8 @@ describe('memory usage', function()
         call s:f(0)
       endfor
     ]])
+    -- TODO: check_result fails if command() is used here. Why? #16064
+    feed_command('source '..tmpfile)
     poke_eventloop()
     local after = monitor_memory_usage(pid)
     -- Estimate the limit of max usage as 2x initial usage.
@@ -136,7 +145,7 @@ describe('memory usage', function()
   it('function capture lvars', function()
     local pid = eval('getpid()')
     local before = monitor_memory_usage(pid)
-    local fname = source([[
+    write_file(tmpfile, [[
       if !exists('s:defined_func')
         func s:f()
           let x = l:
@@ -147,10 +156,12 @@ describe('memory usage', function()
         call s:f()
       endfor
     ]])
+    feed_command('source '..tmpfile)
     poke_eventloop()
     local after = monitor_memory_usage(pid)
     for _ = 1, 3 do
-      feed_command('so '..fname)
+      -- TODO: check_result fails if command() is used here. Why? #16064
+      feed_command('source '..tmpfile)
       poke_eventloop()
     end
     local last = monitor_memory_usage(pid)