test(old): add more missing test files and run more tests alone

Copy four files from Vim v8.2.1432.
Try to match Vim's test_alot.vim.
This marks Vim patch 8.2.0164 as ported:

vim-patch:8.2.0164: test_alot takes too long

Problem:    Test_alot takes too long.
Solution:   Run several tests individually.
https://github.com/vim/vim/commit/842931cd7af37ea95e826b7a93a5d5587d18c9bb

1 files changed, 0 insertions, 43 deletions

diff --git a/test/functional/legacy/delete_spec.lua b/test/functional/legacy/delete_spec.lua
index 141d9583e6..623b6b14a5 100644
--- a/test/functional/legacy/delete_spec.lua
+++ b/test/functional/legacy/delete_spec.lua
@@ -1,7 +1,6 @@
 local helpers = require('test.functional.helpers')(after_each)
 local clear, source = helpers.clear, helpers.source
 local eq, eval, command = helpers.eq, helpers.eval, helpers.command
-local exc_exec = helpers.exc_exec
 
 describe('Test for delete()', function()
   before_each(clear)
@@ -9,42 +8,6 @@ describe('Test for delete()', function()
     os.remove('Xfile')
   end)
 
-  it('file delete', function()
-    command('split Xfile')
-    command("call setline(1, ['a', 'b'])")
-    command('wq')
-    eq(eval("['a', 'b']"), eval("readfile('Xfile')"))
-    eq(0, eval("delete('Xfile')"))
-    eq(-1, eval("delete('Xfile')"))
-  end)
-
-  it('directory delete', function()
-    command("call mkdir('Xdir1')")
-    eq(1, eval("isdirectory('Xdir1')"))
-    eq(0, eval("delete('Xdir1', 'd')"))
-    eq(0, eval("isdirectory('Xdir1')"))
-    eq(-1, eval("delete('Xdir1', 'd')"))
-  end)
-  it('recursive delete', function()
-    command("call mkdir('Xdir1')")
-    command("call mkdir('Xdir1/subdir')")
-    command("call mkdir('Xdir1/empty')")
-    command('split Xdir1/Xfile')
-    command("call setline(1, ['a', 'b'])")
-    command('w')
-    command('w Xdir1/subdir/Xfile')
-    command('close')
-
-    eq(1, eval("isdirectory('Xdir1')"))
-    eq(eval("['a', 'b']"), eval("readfile('Xdir1/Xfile')"))
-    eq(1, eval("isdirectory('Xdir1/subdir')"))
-    eq(eval("['a', 'b']"), eval("readfile('Xdir1/subdir/Xfile')"))
-    eq(1, eval("'Xdir1/empty'->isdirectory()"))
-    eq(0, eval("delete('Xdir1', 'rf')"))
-    eq(0, eval("isdirectory('Xdir1')"))
-    eq(-1, eval("delete('Xdir1', 'd')"))
-  end)
-
   it('symlink delete', function()
     source([[
       split Xfile
@@ -115,10 +78,4 @@ describe('Test for delete()', function()
     eq(0, eval("delete('Xdir4/Xfile')"))
     eq(0, eval("delete('Xdir4', 'd')"))
   end)
-
-  it('gives correct emsgs', function()
-    eq('Vim(call):E474: Invalid argument', exc_exec("call delete('')"))
-    eq('Vim(call):E15: Invalid expression: 0',
-       exc_exec("call delete('foo', 0)"))
-  end)
 end)