I broke up with neovim....vim is my best friend now

dot_vim/plugged/vimtex/test/test-completion-environments/test1.vim

@@ -0,0 +1,22 @@
+set nocompatible
+let &rtp = '../..,' . &rtp
+filetype plugin on
+
+nnoremap q :qall!<cr>
+
+let g:vimtex_cache_root = '.'
+let g:vimtex_cache_persistent = 0
+
+silent edit test1.tex
+
+if empty($INMAKE) | finish | endif
+
+" Candidates from \newenvironment
+let s:candidates = vimtex#test#completion('\begin{', 'test')
+call assert_equal(s:candidates[0].word, 'testnewenvironment')
+
+" Candidates from package (align from amsmath)
+let s:candidates = vimtex#test#completion('\begin{', 'ali')
+call assert_equal(s:candidates[0].word, 'align')
+
+call vimtex#test#finished()