update INFO_MATH_IMAGES test
diff --git a/tta/tests/info_tex/res_parser/tex_math_info_math_images/tex_math_info_math2img.tex b/tta/tests/info_tex/res_parser/tex_math_info_math_images/tex_math_info_math2img.tex
index 4f3e6a9..b48fdb3 100644
--- a/tta/tests/info_tex/res_parser/tex_math_info_math_images/tex_math_info_math2img.tex
+++ b/tta/tests/info_tex/res_parser/tex_math_info_math_images/tex_math_info_math2img.tex
@@ -1,6 +1,6 @@
% Automatically generated by Texinfo math to image code
-\documentclass{minimal}
+\documentclass[fleqn]{minimal}
\usepackage[utf8]{inputenc}
\usepackage[T1]{fontenc}
\usepackage{amsmath}
@@ -9,6 +9,10 @@
\usepackage{bm}
\usepackage[active,tightpage]{preview}
\pagestyle{empty}
+\setlength{\abovedisplayskip}{0pt}
+\setlength{\belowdisplayskip}{0pt}
+\setlength{\abovedisplayshortskip}{0pt}
+\setlength{\belowdisplayshortskip}{0pt}
\begin{document}
\begin{preview}
${x^i}\over{\tan y}$
