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

dot_vim/plugged/vimtex/test/test-get-main/test-latexmk/latexmkrc

@@ -0,0 +1 @@
+@default_files = ('main.tex');

dot_vim/plugged/vimtex/test/test-get-main/test-latexmk/main.tex

@@ -0,0 +1,7 @@
+\input{preamble.tex}
+\author{lervag}
+\title{VimTeX}
+\begin{document}
+\maketitle
+\lipsum[1-1]
+\end{document}

dot_vim/plugged/vimtex/test/test-get-main/test-latexmk/preamble.tex

@@ -0,0 +1,2 @@
+\documentclass{book}
+\usepackage{lipsum}