diff --git a/test/lua/plugin/a.vader b/test/lua/plugin/a.vader
new file mode 100644
index 000000000..d60e651ca
--- /dev/null
+++ b/test/lua/plugin/a.vader
@@ -0,0 +1,15 @@
+Execute ( SpaceVim plugin: a.lua ):
+  let root = SpaceVim#plugins#a#getConfigPath()
+  AssertEqual SpaceVim#plugins#a#get_alt('docs/index.md', root, 1), 'docs/cn/index.md'
+  AssertEqual SpaceVim#plugins#a#get_alt('docs/cn/index.md', root, 1), 'docs/index.md'
+  AssertEqual SpaceVim#plugins#a#get_alt('docs/api/job.md', root, 1), 'docs/cn/api/job.md'
+  AssertEqual SpaceVim#plugins#a#get_alt('docs/cn/api/job.md', root, 1), 'docs/api/job.md'
+  AssertEqual SpaceVim#plugins#a#get_alt('wiki/en/Project-layout.md', root, 1), 'wiki/cn/Project-layout.md'
+  AssertEqual SpaceVim#plugins#a#get_alt('wiki/cn/Project-layout.md', root, 1), 'wiki/en/Project-layout.md'
+  AssertEqual SpaceVim#plugins#a#get_alt('docs/_posts/2018-09-28-use-vim-as-ide.md', root, 1), 'docs/_posts/2018-09-27-use-vim-as-ide.md'
+  AssertEqual SpaceVim#plugins#a#get_alt('docs/_posts/2018-09-27-use-vim-as-ide.md', root, 1), 'docs/_posts/2018-09-28-use-vim-as-ide.md'
+  AssertEqual SpaceVim#plugins#a#get_alt('docs/_posts/2020-01-28-manage-project-alternate-files.md', root, 1), 'docs/_posts/2020-01-27-manage-project-alternate-files.md'
+  AssertEqual SpaceVim#plugins#a#get_alt('docs/_posts/2020-01-27-manage-project-alternate-files.md', root, 1), 'docs/_posts/2020-01-28-manage-project-alternate-files.md'
+  unlet root
+
+