test: remove unnecessary nil argument to testutil (#28270)

test/functional/plugin/lsp/testutil.lua

@@ -1,4 +1,4 @@
-local t = require('test.functional.testutil')(nil)
+local t = require('test.functional.testutil')()
 
 local clear = t.clear
 local exec_lua = t.exec_lua

test/functional/preload.lua

@@ -1,7 +1,7 @@
 -- Modules loaded here will NOT be cleared and reloaded by Busted.
 -- Busted started doing this to help provide more isolation.  See issue #62
 -- for more information about this.
-local t = require('test.functional.testutil')(nil)
+local t = require('test.functional.testutil')()
 require('test.functional.ui.screen')
 local is_os = t.is_os
 

test/functional/provider/define_spec.lua

@@ -28,7 +28,7 @@ local function runx(sync, handler, on_setup)
   local function setup_cb(...)
     on_setup(...)
     -- need to stop on setup callback because there's two session:request
-    -- calls in `request/t.lua`. The second call will always return
+    -- calls in `request/testutil.lua`. The second call will always return
     -- after pending notification/request callbacks are processed
     stop()
   end

test/functional/shada/testutil.lua

@@ -1,4 +1,4 @@
-local t = require('test.functional.testutil')(nil)
+local t = require('test.functional.testutil')()
 local api = t.api
 local write_file = t.write_file
 local concat_tables = t.concat_tables

test/functional/terminal/testutil.lua

@@ -1,7 +1,7 @@
 -- To test tui/input.c, this module spawns `nvim` inside :terminal and sends
--- bytes via jobsend().  Note: the functional/t.lua test-session methods
+-- bytes via jobsend().  Note: the functional/testutil.lua test-session methods
 -- operate on the _host_ session, _not_ the child session.
-local t = require('test.functional.testutil')(nil)
+local t = require('test.functional.testutil')()
 local Screen = require('test.functional.ui.screen')
 local testprg = t.testprg
 local exec_lua = t.exec_lua

test/functional/testutil.lua

@@ -1042,7 +1042,6 @@ return function()
     before_each(function()
       local id = ('T%d'):format(testid())
       _G._nvim_test_id = id
-      return nil, true
     end)
   end
 

test/functional/ui/embed_spec.lua

@@ -233,7 +233,7 @@ describe('--embed UI', function()
     }
     eq({ [16777215] = true }, seen)
 
-    -- NB: by accident how functional/t.lua currently handles the default color scheme, the
+    -- NB: by accident how functional/testutil.lua currently handles the default color scheme, the
     -- above is sufficient to test the behavior. But in case that workaround is removed, we need
     -- a test with an explicit override like below, so do it to remain safe.
     startup('--cmd', 'hi NORMAL guibg=#FF00FF')

test/functional/ui/output_spec.lua

@@ -81,7 +81,7 @@ describe('shell command :!', function()
       {3:-- TERMINAL --}                                    |
     ]],
       {
-        -- test/functional/t.lua defaults to background=light.
+        -- test/functional/testutil.lua defaults to background=light.
         [1] = { reverse = true },
         [3] = { bold = true },
         [10] = { foreground = 2 },

test/functional/ui/screen.lua

@@ -70,7 +70,7 @@
 -- To help write screen tests, see Screen:snapshot_util().
 -- To debug screen tests, see Screen:redraw_debug().
 
-local t = require('test.functional.testutil')(nil)
+local t = require('test.functional.testutil')()
 local busted = require('busted')
 local deepcopy = vim.deepcopy
 local shallowcopy = t.shallowcopy