refactor(vim.version): cleanup

- version.cmp(): assert valid version
- add test for loading vim.version (the other tests use shared.lua in
  the test runner)
- reduce test scopes, reword test descriptions

1 files changed, 1 insertions, 0 deletions

diff --git a/scripts/gen_vimdoc.py b/scripts/gen_vimdoc.py
index 45a6d8e402..1e85fa49e9 100755
--- a/scripts/gen_vimdoc.py
+++ b/scripts/gen_vimdoc.py
@@ -194,6 +194,7 @@ CONFIG = {
             'keymap': 'vim.keymap',
             'fs': 'vim.fs',
             'secure': 'vim.secure',
+            'version': 'vim.version',
         },
         'append_only': [
             'shared.lua',