From 1b3e6e7594e1dd387207ffe304f2583e61afcb77 Mon Sep 17 00:00:00 2001
From: Christian Clason <c.clason@uni-graz.at>
Date: Sat, 31 Dec 2022 16:00:01 +0100
Subject: [PATCH] vim-patch:9.0.1120: tex filetype detection not sufficiently
 tested

Problem:    Tex filetype detection not sufficiently tested.
Solution:   Add more test cases for "tex" detection. (Jonas Strittmatter,
            closes vim/vim#11765)

https://github.com/vim/vim/commit/c55e8f2c6f5cafe11494df3e2d28ff3d03b92c71

Co-authored-by: smjonas <jonas.strittmatter@gmx.de>
---
 src/nvim/testdir/test_filetype.vim | 40 +++++++++++++++++++++++++-----
 1 file changed, 34 insertions(+), 6 deletions(-)

diff --git a/src/nvim/testdir/test_filetype.vim b/src/nvim/testdir/test_filetype.vim
index cf155b3cb9..912e702631 100644
--- a/src/nvim/testdir/test_filetype.vim
+++ b/src/nvim/testdir/test_filetype.vim
@@ -1676,17 +1676,45 @@ endfunc
 func Test_tex_file()
   filetype on
 
-  " only tests one case, should do more
-  let lines =<< trim END
-      % This is a sentence.
+  call writefile(['%& pdflatex'], 'Xfile.tex')
+  split Xfile.tex
+  call assert_equal('tex', &filetype)
+  bwipe
 
-      This is a sentence.
-  END
-  call writefile(lines, "Xfile.tex")
+  call writefile(['\newcommand{\test}{some text}'], 'Xfile.tex')
+  split Xfile.tex
+  call assert_equal('tex', &filetype)
+  bwipe
+
+  " tex_flavor is unset
+  call writefile(['%& plain'], 'Xfile.tex')
   split Xfile.tex
   call assert_equal('plaintex', &filetype)
   bwipe
 
+  let g:tex_flavor = 'plain'
+  call writefile(['just some text'], 'Xfile.tex')
+  split Xfile.tex
+  call assert_equal('plaintex', &filetype)
+  bwipe
+
+  let lines =<< trim END
+      % This is a comment.
+
+      \usemodule[translate]
+  END
+  call writefile(lines, 'Xfile.tex')
+  split Xfile.tex
+  call assert_equal('context', &filetype)
+  bwipe
+
+  let g:tex_flavor = 'context'
+  call writefile(['just some text'], 'Xfile.tex')
+  split Xfile.tex
+  call assert_equal('context', &filetype)
+  bwipe
+  unlet g:tex_flavor
+
   call delete('Xfile.tex')
   filetype off
 endfunc