tests: Use new write_file() function in tests.

test/functional/ex_cmds/wviminfo_spec.lua

@@ -1,7 +1,7 @@
 local helpers, lfs = require('test.functional.helpers'), require('lfs')
-local clear, execute, eq, neq, spawn, nvim_prog, set_session, wait =
-  helpers.clear, helpers.execute, helpers.eq, helpers.neq, helpers.spawn,
-  helpers.nvim_prog, helpers.set_session, helpers.wait
+local clear, execute, eq, neq, spawn, nvim_prog, set_session, wait, write_file
+  = helpers.clear, helpers.execute, helpers.eq, helpers.neq, helpers.spawn,
+  helpers.nvim_prog, helpers.set_session, helpers.wait, helpers.write_file
 
 describe(':wviminfo', function()
   local viminfo_file = 'wviminfo_test'
@@ -33,10 +33,7 @@ describe(':wviminfo', function()
     local text = 'wviminfo test'
 
     -- Create a dummy file
-    local fp = io.open(viminfo_file, 'w')
-    fp:write(text)
-    fp:flush()
-    fp:close()
+    write_file(viminfo_file, text)
 
     -- sanity check
     eq(text, io.open(viminfo_file):read())

test/functional/job/job_spec.lua

@@ -1,11 +1,11 @@
 
 local helpers = require('test.functional.helpers')
-local clear, nvim, eq, neq, ok, expect, eval, next_msg, run, stop, session
-  = helpers.clear, helpers.nvim, helpers.eq, helpers.neq, helpers.ok,
-  helpers.expect, helpers.eval, helpers.next_message, helpers.run,
-  helpers.stop, helpers.session
-local nvim_dir, insert, feed = helpers.nvim_dir, helpers.insert, helpers.feed
-local source, execute, wait = helpers.source, helpers.execute, helpers.wait
+local clear, eq, eval, execute, expect, feed, insert, neq, next_msg, nvim,
+  nvim_dir, ok, run, session, source, stop, wait, write_file = helpers.clear,
+  helpers.eq, helpers.eval, helpers.execute, helpers.expect, helpers.feed,
+  helpers.insert, helpers.neq, helpers.next_message, helpers.nvim,
+  helpers.nvim_dir, helpers.ok, helpers.run, helpers.session, helpers.source,
+  helpers.stop, helpers.wait, helpers.write_file
 
 
 describe('jobs', function()
@@ -64,9 +64,7 @@ describe('jobs', function()
   it('preserves NULs', function()
     -- Make a file with NULs in it.
     local filename = os.tmpname()
-    local file = io.open(filename, "w")
-    file:write("abc\0def\n")
-    file:close()
+    write_file(filename, "abc\0def\n")
 
     nvim('command', "let j = jobstart(['cat', '"..filename.."'], g:job_opts)")
     eq({'notification', 'stdout', {0, {'abc\ndef', ''}}}, next_msg())

test/functional/legacy/060_exists_and_has_functions_spec.lua

@@ -3,6 +3,7 @@
 local helpers = require('test.functional.helpers')
 local feed, insert, source = helpers.feed, helpers.insert, helpers.source
 local clear, execute, expect = helpers.clear, helpers.execute, helpers.expect
+local write_file = helpers.write_file
 local os = require('os')
 
 describe('exists() and has() functions', function()
@@ -11,8 +12,7 @@ describe('exists() and has() functions', function()
   it('is working', function()
 
     -- Create a temporary script needed for the test.
-    local script = io.open('test60.vim', 'w')
-    script:write(helpers.dedent([=[
+    write_file('test60.vim', [=[
       " Vim script for exists() function test
       " Script-local variables are checked here
       
@@ -110,9 +110,7 @@ describe('exists() and has() functions', function()
           echo "FAILED"
       endif
       unlet str
-      ]=]))
-    script:flush()
-    script:close()
+      ]=])
 
     source([=[
       " Add the special directory with test scripts to &rtp

test/functional/legacy/061_undo_tree_spec.lua

@@ -1,9 +1,10 @@
 -- Tests for undo tree and :earlier and :later.
 
 local helpers = require('test.functional.helpers')
-local feed, insert, source, eq, eval, clear, execute, expect, wait =
-  helpers.feed, helpers.insert, helpers.source, helpers.eq, helpers.eval,
-  helpers.clear, helpers.execute, helpers.expect, helpers.wait
+local feed, insert, source, eq, eval, clear, execute, expect, wait, write_file
+  = helpers.feed, helpers.insert, helpers.source, helpers.eq, helpers.eval,
+  helpers.clear, helpers.execute, helpers.expect, helpers.wait,
+  helpers.write_file
 
 local function expect_empty_buffer()
   -- The space will be removed by helpers.dedent but is needed because dedent
@@ -13,12 +14,6 @@ end
 local function expect_line(line)
   return eq(line, eval('getline(".")'))
 end
-local function write_file(name, text)
-  local file = io.open(name, 'w')
-  file:write(text)
-  file:flush()
-  file:close()
-end
 
 describe('undo tree:', function()
   before_each(clear)
@@ -40,7 +35,7 @@ describe('undo tree:', function()
       write_file('Xtest', '\n123456789\n')
 
       -- `:earlier` and `:later` are (obviously) time-sensitive, so this test
-      -- sometimes fails if the system is under load. It is wrapped in a local 
+      -- sometimes fails if the system is under load. It is wrapped in a local
       -- function to allow multiple attempts.
       local function test_earlier_later()
         clear()

test/functional/runtime/autoload/provider/python3_spec.lua

@@ -11,7 +11,7 @@ end
 local helpers = require('test.functional.helpers')
 local eval, command, feed = helpers.eval, helpers.command, helpers.feed
 local eq, clear, insert = helpers.eq, helpers.clear, helpers.insert
-local expect = helpers.expect
+local expect, write_file = helpers.expect, helpers.write_file
 
 
 describe('python3 commands and functions', function()
@@ -46,9 +46,7 @@ describe('python3 commands and functions', function()
 
   it('py3file', function()
     local fname = 'py3file.py'
-    local F = io.open(fname, 'w')
-    F:write('vim.command("let set_by_py3file = 123")')
-    F:close()
+    write_file(fname, 'vim.command("let set_by_py3file = 123")')
     command('py3file py3file.py')
     eq(123, eval('g:set_by_py3file'))
     os.remove(fname)

test/functional/runtime/autoload/provider/python_spec.lua

@@ -11,7 +11,7 @@ end
 local helpers = require('test.functional.helpers')
 local eval, command, feed = helpers.eval, helpers.command, helpers.feed
 local eq, clear, insert = helpers.eq, helpers.clear, helpers.insert
-local expect = helpers.expect
+local expect, write_file = helpers.expect, helpers.write_file
 
 
 describe('python commands and functions', function()
@@ -46,9 +46,7 @@ describe('python commands and functions', function()
 
   it('pyfile', function()
     local fname = 'pyfile.py'
-    local F = io.open(fname, 'w')
-    F:write('vim.command("let set_by_pyfile = 123")')
-    F:close()
+    write_file(fname, 'vim.command("let set_by_pyfile = 123")')
     command('pyfile pyfile.py')
     eq(123, eval('g:set_by_pyfile'))
     os.remove(fname)