test(old): add test_expand.vim

This removes expand_spec.lua and copies test_expand.vim from Vim at
version v8.1.2278.

The rest of patch 8.1.2278 were already applied in #15952, so this marks
that patch as fully ported.

vim-patch:8.1.2278: using "cd" with "exe" may fail

Problem:    Using "cd" with "exe" may fail.
Solution:   Use chdir() instead.
https://github.com/vim/vim/commit/3503d7c94a6c8c2a5ca1665d648d0cb81afcc863

1 files changed, 0 insertions, 129 deletions

diff --git a/test/functional/legacy/expand_spec.lua b/test/functional/legacy/expand_spec.lua
deleted file mode 100644
index cd3713eabe..0000000000
--- a/test/functional/legacy/expand_spec.lua
+++ /dev/null
@@ -1,129 +0,0 @@
--- Test for expanding file names
-
-local helpers = require('test.functional.helpers')(after_each)
-local eq = helpers.eq
-local call = helpers.call
-local nvim = helpers.meths
-local clear = helpers.clear
-local source = helpers.source
-
-local function expected_empty()
-  eq({}, nvim.get_vvar('errors'))
-end
-
-describe('expand file name', function()
-  after_each(function()
-    helpers.rmdir('Xdir1')
-    helpers.rmdir('Xdir2')
-    helpers.rmdir('Xdir3')
-    helpers.rmdir('Xdir4')
-  end)
-
-  before_each(function()
-    clear()
-
-    source([[
-      func Test_with_directories()
-        call mkdir('Xdir1')
-        call mkdir('Xdir2')
-        call mkdir('Xdir3')
-        cd Xdir3
-        call mkdir('Xdir4')
-        cd ..
-
-        split Xdir1/file
-        call setline(1, ['a', 'b'])
-        w
-        w Xdir3/Xdir4/file
-        close
-
-        next Xdir?/*/file
-        call assert_equal('Xdir3/Xdir4/file', expand('%'))
-				if has('unix')
-					next! Xdir?/*/nofile
-					call assert_equal('Xdir?/*/nofile', expand('%'))
-				endif
-        " Edit another file, on MS-Windows the swap file would be in use and can't
-        " be deleted
-        edit foo
-
-        call assert_equal(0, delete('Xdir1', 'rf'))
-        call assert_equal(0, delete('Xdir2', 'rf'))
-        call assert_equal(0, delete('Xdir3', 'rf'))
-      endfunc
-
-      func Test_with_tilde()
-        let dir = getcwd()
-        call mkdir('Xdir ~ dir')
-        call assert_true(isdirectory('Xdir ~ dir'))
-        cd Xdir\ ~\ dir
-        call assert_true(getcwd() =~ 'Xdir \~ dir')
-        exe 'cd ' . fnameescape(dir)
-        call delete('Xdir ~ dir', 'd')
-        call assert_false(isdirectory('Xdir ~ dir'))
-      endfunc
-
-      func Test_expand_tilde_filename()
-        split ~
-        call assert_equal('~', expand('%'))
-        call assert_notequal(expand('%:p'), expand('~/'))
-        call assert_match('\~', expand('%:p'))
-        bwipe!
-      endfunc
-
-      func Test_expandcmd()
-        let $FOO = 'Test'
-        call assert_equal('e x/Test/y', expandcmd('e x/$FOO/y'))
-        unlet $FOO
-
-        new
-        edit Xfile1
-        call assert_equal('e Xfile1', expandcmd('e %'))
-        edit Xfile2
-        edit Xfile1
-        call assert_equal('e Xfile2', 'e #'->expandcmd())
-        edit Xfile2
-        edit Xfile3
-        edit Xfile4
-        let bnum = bufnr('Xfile2')
-        call assert_equal('e Xfile2', expandcmd('e #' . bnum))
-        call setline('.', 'Vim!@#')
-        call assert_equal('e Vim', expandcmd('e <cword>'))
-        call assert_equal('e Vim!@#', expandcmd('e <cWORD>'))
-        enew!
-        edit Xfile.java
-        call assert_equal('e Xfile.py', expandcmd('e %:r.py'))
-        call assert_equal('make abc.java', expandcmd('make abc.%:e'))
-        call assert_equal('make Xabc.java', expandcmd('make %:s?file?abc?'))
-        edit a1a2a3.rb
-        call assert_equal('make b1b2b3.rb a1a2a3 Xfile.o', expandcmd('make %:gs?a?b? %< #<.o'))
-
-        call assert_fails('call expandcmd("make <afile>")', 'E495:')
-        call assert_fails('call expandcmd("make <afile>")', 'E495:')
-        enew
-        call assert_fails('call expandcmd("make %")', 'E499:')
-        close
-      endfunc
-    ]])
-  end)
-
-  it('works with directories', function()
-    call('Test_with_directories')
-    expected_empty()
-  end)
-
-  it('works with tilde', function()
-    call('Test_with_tilde')
-    expected_empty()
-  end)
-
-  it('does not expand tilde if it is a filename', function()
-    call('Test_expand_tilde_filename')
-    expected_empty()
-  end)
-
-  it('works with expandcmd()', function()
-    call('Test_expandcmd')
-    expected_empty()
-  end)
-end)