feat(eval/method): partially port v8.1.1925

Adds method call support for all functions in the patch, but it cannot
be fully ported due to missing tests for:

- getcwd(): requires chdir() and Test_chdir_func() from v8.1.1291.

Note that the method call tests for getreg() and getregtype() were
removed in v8.2.1547, which has already been ported, but doesn't seem to
have been replaced with a new test...

This patch also makes getchangelist()'s argument optional (defaults to
the current buffer).

eval.txt includes a typo for gettabwinvar(), which is fixed in
v8.1.1952.

1 files changed, 4 insertions, 3 deletions

diff --git a/test/functional/legacy/file_perm_spec.lua b/test/functional/legacy/file_perm_spec.lua
index 8fdee95e91..ccdbfe0534 100644
--- a/test/functional/legacy/file_perm_spec.lua
+++ b/test/functional/legacy/file_perm_spec.lua
@@ -3,7 +3,7 @@ require('os')
 
 local helpers = require('test.functional.helpers')(after_each)
 local clear, call, eq = helpers.clear, helpers.call, helpers.eq
-local neq, exc_exec = helpers.neq, helpers.exc_exec
+local neq, exc_exec, eval = helpers.neq, helpers.exc_exec, helpers.eval
 
 describe('Test getting and setting file permissions', function()
   local tempfile = helpers.tmpname()
@@ -14,11 +14,12 @@ describe('Test getting and setting file permissions', function()
   end)
 
   it('file permissions', function()
+    -- eval() is used to test VimL method syntax for setfperm() and getfperm()
     eq('', call('getfperm', tempfile))
-    eq(0, call('setfperm', tempfile, 'r--------'))
+    eq(0, eval("'" .. tempfile .. "'->setfperm('r--------')"))
 
     call('writefile', {'one'}, tempfile)
-    eq(9, call('len', call('getfperm', tempfile)))
+    eq(9, eval("len('" .. tempfile .. "'->getfperm())"))
 
     eq(1, call('setfperm', tempfile, 'rwx------'))
     if helpers.is_os('win') then