1 files changed, 23 insertions, 5 deletions
diff --git a/test/functional/ui/output_spec.lua b/test/functional/ui/output_spec.lua
index c028f44b44..d7dde6345f 100644
--- a/test/functional/ui/output_spec.lua
+++ b/test/functional/ui/output_spec.lua
@@ -10,6 +10,8 @@ local iswin = helpers.iswin
 local clear = helpers.clear
 local command = helpers.command
 local nvim_dir = helpers.nvim_dir
+local has_powershell = helpers.has_powershell
+local set_shell_powershell = helpers.set_shell_powershell
 
 describe("shell command :!", function()
   local screen
@@ -30,7 +32,6 @@ describe("shell command :!", function()
 
   after_each(function()
     child_session.feed_data("\3") -- Ctrl-C
-    screen:detach()
   end)
 
   it("displays output without LF/EOF. #4646 #4569 #3772", function()
@@ -51,8 +52,7 @@ describe("shell command :!", function()
 
   it("throttles shell-command output greater than ~10KB", function()
     if 'openbsd' == helpers.uname() then
-      pending('FIXME #10804', function() end)
-      return
+      pending('FIXME #10804')
     end
     child_session.feed_data(":!"..nvim_dir.."/shell-test REP 30001 foo\n")
 
@@ -96,8 +96,7 @@ describe("shell command :!", function()
 
   it('handles control codes', function()
     if iswin() then
-      pending('missing printf', function() end)
-      return
+      pending('missing printf')
     end
     local screen = Screen.new(50, 4)
     screen:attach()
@@ -230,4 +229,23 @@ describe("shell command :!", function()
       ]])
     end)
   end)
+  if has_powershell() then
+    it('powershell supports literal strings', function()
+      set_shell_powershell()
+      local screen = Screen.new(30, 4)
+      screen:attach()
+      feed_command([[!'Write-Output $a']])
+      screen:expect{any='\nWrite%-Output %$a', timeout=10000}
+      feed_command([[!$a = 1; Write-Output '$a']])
+      screen:expect{any='\n%$a', timeout=10000}
+      feed_command([[!"Write-Output $a"]])
+      screen:expect{any='\nWrite%-Output', timeout=10000}
+      feed_command([[!$a = 1; Write-Output "$a"]])
+      screen:expect{any='\n1', timeout=10000}
+      feed_command(iswin()
+        and [[!& 'C:\\Windows\\system32\\cmd.exe' /c 'echo $a']]
+        or  [[!& '/bin/sh' -c 'echo ''$a''']])
+      screen:expect{any='\n%$a', timeout=10000}
+    end)
+  end
 end)