1 files changed, 24 insertions, 0 deletions
diff --git a/test/functional/lua/vim_spec.lua b/test/functional/lua/vim_spec.lua
index c7490756d4..a262d239e8 100644
--- a/test/functional/lua/vim_spec.lua
+++ b/test/functional/lua/vim_spec.lua
@@ -3543,6 +3543,18 @@ describe('lua stdlib', function()
       ]])
       )
     end)
+
+    it('can return values by reference', function()
+      eq(
+        { 4, 7 },
+        exec_lua [[
+        local val = {4, 10}
+        local ref = vim.api.nvim_buf_call(0, function() return val end)
+        ref[2] = 7
+        return val
+      ]]
+      )
+    end)
   end)
 
   describe('vim.api.nvim_win_call', function()
@@ -3640,6 +3652,18 @@ describe('lua stdlib', function()
                                       |
       ]]
     end)
+
+    it('can return values by reference', function()
+      eq(
+        { 7, 10 },
+        exec_lua [[
+        local val = {4, 10}
+        local ref = vim.api.nvim_win_call(0, function() return val end)
+        ref[1] = 7
+        return val
+      ]]
+      )
+    end)
   end)
 
   describe('vim.iconv', function()