test: add tests for executing commands with backwards range

2 files changed, 15 insertions, 0 deletions

diff --git a/test/functional/api/vim_spec.lua b/test/functional/api/vim_spec.lua
index af6fbf092a..c81b6e90cc 100644
--- a/test/functional/api/vim_spec.lua
+++ b/test/functional/api/vim_spec.lua
@@ -361,6 +361,12 @@ describe('API', function()
       eq('', eval('v:errmsg'))  -- v:errmsg was not updated.
       eq('', eval('v:exception'))
     end)
+
+    it('gives E493 instead of prompting on backwards range', function()
+      command('split')
+      eq('Vim(windo):E493: Backwards range given: 2,1windo echo',
+         pcall_err(command, '2,1windo echo'))
+    end)
   end)
 
   describe('nvim_command_output', function()
diff --git a/test/functional/vimscript/execute_spec.lua b/test/functional/vimscript/execute_spec.lua
index 17edf5c93e..a9a4ad4811 100644
--- a/test/functional/vimscript/execute_spec.lua
+++ b/test/functional/vimscript/execute_spec.lua
@@ -4,6 +4,7 @@ local eval = helpers.eval
 local clear = helpers.clear
 local source = helpers.source
 local exc_exec = helpers.exc_exec
+local pcall_err = helpers.pcall_err
 local funcs = helpers.funcs
 local Screen = require('test.functional.ui.screen')
 local command = helpers.command
@@ -284,6 +285,14 @@ describe('execute()', function()
       eq('42', eval('g:mes'))
     end)
 
+    it('gives E493 instead of prompting on backwards range for ""', function()
+      command('split')
+      eq('Vim(windo):E493: Backwards range given: 2,1windo echo',
+         pcall_err(funcs.execute, '2,1windo echo', ''))
+      eq('Vim(windo):E493: Backwards range given: 2,1windo echo',
+         pcall_err(funcs.execute, {'2,1windo echo'}, ''))
+    end)
+
     it('captures but does not display output for "silent"', function()
       local screen = Screen.new(40, 5)
       screen:attach()