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, 35 deletions

diff --git a/test/functional/legacy/searchpos_spec.lua b/test/functional/legacy/searchpos_spec.lua
deleted file mode 100644
index fc18341c38..0000000000
--- a/test/functional/legacy/searchpos_spec.lua
+++ /dev/null
@@ -1,35 +0,0 @@
-local helpers = require('test.functional.helpers')(after_each)
-local call = helpers.call
-local clear = helpers.clear
-local command = helpers.command
-local eq = helpers.eq
-local eval = helpers.eval
-local insert = helpers.insert
-
-describe('searchpos', function()
-  before_each(clear)
-
-  it('is working', function()
-    insert([[
-      1a3
-      123xyz]])
-
-    call('cursor', 1, 1)
-    eq({1, 1, 2}, eval([[searchpos('\%(\([a-z]\)\|\_.\)\{-}xyz', 'pcW')]]))
-    call('cursor', 1, 2)
-    eq({2, 1, 1}, eval([['\%(\([a-z]\)\|\_.\)\{-}xyz'->searchpos('pcW')]]))
-
-    command('set cpo-=c')
-    call('cursor', 1, 2)
-    eq({1, 2, 2}, eval([[searchpos('\%(\([a-z]\)\|\_.\)\{-}xyz', 'pcW')]]))
-    call('cursor', 1, 3)
-    eq({1, 3, 1}, eval([[searchpos('\%(\([a-z]\)\|\_.\)\{-}xyz', 'pcW')]]))
-
-    -- Now with \zs, first match is in column 0, "a" is matched.
-    call('cursor', 1, 3)
-    eq({2, 4, 2}, eval([[searchpos('\%(\([a-z]\)\|\_.\)\{-}\zsxyz', 'pcW')]]))
-    -- With z flag start at cursor column, don't see the "a".
-    call('cursor', 1, 3)
-    eq({2, 4, 1}, eval([[searchpos('\%(\([a-z]\)\|\_.\)\{-}\zsxyz', 'pcWz')]]))
-  end)
-end)