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

dot_vim/plugged/vimtex/test/test-syntax/test-mathtools.vim

@@ -0,0 +1,16 @@
+source common.vim
+
+highlight Conceal ctermfg=4 ctermbg=7 guibg=NONE guifg=blue
+
+silent edit test-mathtools.tex
+
+vsplit
+silent wincmd w
+silent windo set scrollbind
+set conceallevel=2
+
+if empty($INMAKE) | finish | endif
+
+call assert_true(vimtex#syntax#in('texMathZoneEnv', 7, 1))
+
+call vimtex#test#finished()