diff --git a/.gitignore b/.gitignore
index 41702df..33e9a46 100644
--- a/.gitignore
+++ b/.gitignore
@@ -3,3 +3,4 @@ build/*
 .gitconfiglock
 .initsubmodulelock
 .idea/
+__pycache__
diff --git a/tests/.gitignore b/tests/.gitignore
index ba167d2..41830ed 100644
--- a/tests/.gitignore
+++ b/tests/.gitignore
@@ -4,3 +4,8 @@
 *.log
 *.pdf
 wip/proof/.skip
+*.out
+*.idx
+*.ilg
+*.ind
+*.cnt
diff --git a/tests/COMPILE_MAKEFILE b/tests/COMPILE_MAKEFILE
new file mode 100644
index 0000000..768055d
--- /dev/null
+++ b/tests/COMPILE_MAKEFILE
@@ -0,0 +1,3 @@
+test:
+	latexmk -dvi- -pdf -gg -Werror -latexoption=-interaction=nonstopmode test.tex
+	latexmk -c test.tex
diff --git a/tests/DIR_MAKEFILE b/tests/DIR_MAKEFILE
new file mode 100644
index 0000000..61533ed
--- /dev/null
+++ b/tests/DIR_MAKEFILE
@@ -0,0 +1,7 @@
+SUBDIRS := $(wildcard */.)
+
+all: $(SUBDIRS)
+$(SUBDIRS):
+		$(MAKE) -C $@
+
+.PHONY: all $(SUBDIRS)
diff --git a/tests/Makefile b/tests/Makefile
deleted file mode 100644
index 61533ed..0000000
--- a/tests/Makefile
+++ /dev/null
@@ -1,7 +0,0 @@
-SUBDIRS := $(wildcard */.)
-
-all: $(SUBDIRS)
-$(SUBDIRS):
-		$(MAKE) -C $@
-
-.PHONY: all $(SUBDIRS)
diff --git a/tests/Makefile b/tests/Makefile
new file mode 120000
index 0000000..57a5fed
--- /dev/null
+++ b/tests/Makefile
@@ -0,0 +1 @@
+DIR_MAKEFILE
\ No newline at end of file
diff --git a/tests/environments/Makefile b/tests/environments/Makefile
deleted file mode 100644
index 61533ed..0000000
--- a/tests/environments/Makefile
+++ /dev/null
@@ -1,7 +0,0 @@
-SUBDIRS := $(wildcard */.)
-
-all: $(SUBDIRS)
-$(SUBDIRS):
-		$(MAKE) -C $@
-
-.PHONY: all $(SUBDIRS)
diff --git a/tests/environments/Makefile b/tests/environments/Makefile
new file mode 120000
index 0000000..63f6ffd
--- /dev/null
+++ b/tests/environments/Makefile
@@ -0,0 +1 @@
+../DIR_MAKEFILE
\ No newline at end of file
diff --git a/tests/environments/fancythm/Makefile b/tests/environments/fancythm/Makefile
deleted file mode 100644
index 7931aaf..0000000
--- a/tests/environments/fancythm/Makefile
+++ /dev/null
@@ -1,3 +0,0 @@
-test:
-	latexmk -c test.tex
-	latexmk -dvi- -pdf test.tex
diff --git a/tests/environments/fancythm/Makefile b/tests/environments/fancythm/Makefile
new file mode 120000
index 0000000..0fde22c
--- /dev/null
+++ b/tests/environments/fancythm/Makefile
@@ -0,0 +1 @@
+../../COMPILE_MAKEFILE
\ No newline at end of file
diff --git a/tests/lecture-notes/Makefile b/tests/lecture-notes/Makefile
deleted file mode 100644
index 61533ed..0000000
--- a/tests/lecture-notes/Makefile
+++ /dev/null
@@ -1,7 +0,0 @@
-SUBDIRS := $(wildcard */.)
-
-all: $(SUBDIRS)
-$(SUBDIRS):
-		$(MAKE) -C $@
-
-.PHONY: all $(SUBDIRS)
diff --git a/tests/lecture-notes/Makefile b/tests/lecture-notes/Makefile
new file mode 120000
index 0000000..63f6ffd
--- /dev/null
+++ b/tests/lecture-notes/Makefile
@@ -0,0 +1 @@
+../DIR_MAKEFILE
\ No newline at end of file
diff --git a/tests/lecture-notes/lectures/Makefile b/tests/lecture-notes/lectures/Makefile
deleted file mode 100644
index 7931aaf..0000000
--- a/tests/lecture-notes/lectures/Makefile
+++ /dev/null
@@ -1,3 +0,0 @@
-test:
-	latexmk -c test.tex
-	latexmk -dvi- -pdf test.tex
diff --git a/tests/lecture-notes/lectures/Makefile b/tests/lecture-notes/lectures/Makefile
new file mode 120000
index 0000000..0fde22c
--- /dev/null
+++ b/tests/lecture-notes/lectures/Makefile
@@ -0,0 +1 @@
+../../COMPILE_MAKEFILE
\ No newline at end of file
diff --git a/tests/math/Makefile b/tests/math/Makefile
deleted file mode 100644
index 61533ed..0000000
--- a/tests/math/Makefile
+++ /dev/null
@@ -1,7 +0,0 @@
-SUBDIRS := $(wildcard */.)
-
-all: $(SUBDIRS)
-$(SUBDIRS):
-		$(MAKE) -C $@
-
-.PHONY: all $(SUBDIRS)
diff --git a/tests/math/Makefile b/tests/math/Makefile
new file mode 120000
index 0000000..63f6ffd
--- /dev/null
+++ b/tests/math/Makefile
@@ -0,0 +1 @@
+../DIR_MAKEFILE
\ No newline at end of file
diff --git a/tests/math/faktor/Makefile b/tests/math/faktor/Makefile
deleted file mode 100644
index 8381565..0000000
--- a/tests/math/faktor/Makefile
+++ /dev/null
@@ -1,3 +0,0 @@
-test:
-	latexmk -c test.tex
-	latexmk -pdf -dvi- test.tex
diff --git a/tests/math/faktor/Makefile b/tests/math/faktor/Makefile
new file mode 120000
index 0000000..0fde22c
--- /dev/null
+++ b/tests/math/faktor/Makefile
@@ -0,0 +1 @@
+../../COMPILE_MAKEFILE
\ No newline at end of file
diff --git a/tests/math/faktor/test.tex b/tests/math/faktor/test.tex
index e15312d..b2deb2b 100644
--- a/tests/math/faktor/test.tex
+++ b/tests/math/faktor/test.tex
@@ -3,6 +3,7 @@
 \usepackage{mkessler-faktor}
 
 \begin{document}
+
 \[
     \faktor{A}{B} \cong \cofaktor{A}{B}
 \] 
diff --git a/tests/math/math/Makefile b/tests/math/math/Makefile
deleted file mode 100644
index 7931aaf..0000000
--- a/tests/math/math/Makefile
+++ /dev/null
@@ -1,3 +0,0 @@
-test:
-	latexmk -c test.tex
-	latexmk -dvi- -pdf test.tex
diff --git a/tests/math/math/Makefile b/tests/math/math/Makefile
new file mode 120000
index 0000000..0fde22c
--- /dev/null
+++ b/tests/math/math/Makefile
@@ -0,0 +1 @@
+../../COMPILE_MAKEFILE
\ No newline at end of file
diff --git a/tests/math/mathalias/Makefile b/tests/math/mathalias/Makefile
deleted file mode 100644
index 8381565..0000000
--- a/tests/math/mathalias/Makefile
+++ /dev/null
@@ -1,3 +0,0 @@
-test:
-	latexmk -c test.tex
-	latexmk -pdf -dvi- test.tex
diff --git a/tests/math/mathalias/Makefile b/tests/math/mathalias/Makefile
new file mode 120000
index 0000000..0fde22c
--- /dev/null
+++ b/tests/math/mathalias/Makefile
@@ -0,0 +1 @@
+../../COMPILE_MAKEFILE
\ No newline at end of file
diff --git a/tests/math/mathfig/Makefile b/tests/math/mathfig/Makefile
deleted file mode 100644
index 7931aaf..0000000
--- a/tests/math/mathfig/Makefile
+++ /dev/null
@@ -1,3 +0,0 @@
-test:
-	latexmk -c test.tex
-	latexmk -dvi- -pdf test.tex
diff --git a/tests/math/mathfig/Makefile b/tests/math/mathfig/Makefile
new file mode 120000
index 0000000..0fde22c
--- /dev/null
+++ b/tests/math/mathfig/Makefile
@@ -0,0 +1 @@
+../../COMPILE_MAKEFILE
\ No newline at end of file
diff --git a/tests/math/mathfixes/Makefile b/tests/math/mathfixes/Makefile
deleted file mode 100644
index 7931aaf..0000000
--- a/tests/math/mathfixes/Makefile
+++ /dev/null
@@ -1,3 +0,0 @@
-test:
-	latexmk -c test.tex
-	latexmk -dvi- -pdf test.tex
diff --git a/tests/math/mathfixes/Makefile b/tests/math/mathfixes/Makefile
new file mode 120000
index 0000000..0fde22c
--- /dev/null
+++ b/tests/math/mathfixes/Makefile
@@ -0,0 +1 @@
+../../COMPILE_MAKEFILE
\ No newline at end of file
diff --git a/tests/math/mathfont/Makefile b/tests/math/mathfont/Makefile
deleted file mode 100644
index 7931aaf..0000000
--- a/tests/math/mathfont/Makefile
+++ /dev/null
@@ -1,3 +0,0 @@
-test:
-	latexmk -c test.tex
-	latexmk -dvi- -pdf test.tex
diff --git a/tests/math/mathfont/Makefile b/tests/math/mathfont/Makefile
new file mode 120000
index 0000000..0fde22c
--- /dev/null
+++ b/tests/math/mathfont/Makefile
@@ -0,0 +1 @@
+../../COMPILE_MAKEFILE
\ No newline at end of file
diff --git a/tests/math/mathop/Makefile b/tests/math/mathop/Makefile
deleted file mode 100644
index 7931aaf..0000000
--- a/tests/math/mathop/Makefile
+++ /dev/null
@@ -1,3 +0,0 @@
-test:
-	latexmk -c test.tex
-	latexmk -dvi- -pdf test.tex
diff --git a/tests/math/mathop/Makefile b/tests/math/mathop/Makefile
new file mode 120000
index 0000000..0fde22c
--- /dev/null
+++ b/tests/math/mathop/Makefile
@@ -0,0 +1 @@
+../../COMPILE_MAKEFILE
\ No newline at end of file
diff --git a/tests/math/mathsymb/Makefile b/tests/math/mathsymb/Makefile
deleted file mode 100644
index 7931aaf..0000000
--- a/tests/math/mathsymb/Makefile
+++ /dev/null
@@ -1,3 +0,0 @@
-test:
-	latexmk -c test.tex
-	latexmk -dvi- -pdf test.tex
diff --git a/tests/math/mathsymb/Makefile b/tests/math/mathsymb/Makefile
new file mode 120000
index 0000000..0fde22c
--- /dev/null
+++ b/tests/math/mathsymb/Makefile
@@ -0,0 +1 @@
+../../COMPILE_MAKEFILE
\ No newline at end of file
diff --git a/tests/math/unicodechar/Makefile b/tests/math/unicodechar/Makefile
deleted file mode 100644
index 7931aaf..0000000
--- a/tests/math/unicodechar/Makefile
+++ /dev/null
@@ -1,3 +0,0 @@
-test:
-	latexmk -c test.tex
-	latexmk -dvi- -pdf test.tex
diff --git a/tests/math/unicodechar/Makefile b/tests/math/unicodechar/Makefile
new file mode 120000
index 0000000..0fde22c
--- /dev/null
+++ b/tests/math/unicodechar/Makefile
@@ -0,0 +1 @@
+../../COMPILE_MAKEFILE
\ No newline at end of file
diff --git a/tests/misc/Makefile b/tests/misc/Makefile
deleted file mode 100644
index 61533ed..0000000
--- a/tests/misc/Makefile
+++ /dev/null
@@ -1,7 +0,0 @@
-SUBDIRS := $(wildcard */.)
-
-all: $(SUBDIRS)
-$(SUBDIRS):
-		$(MAKE) -C $@
-
-.PHONY: all $(SUBDIRS)
diff --git a/tests/misc/Makefile b/tests/misc/Makefile
new file mode 120000
index 0000000..63f6ffd
--- /dev/null
+++ b/tests/misc/Makefile
@@ -0,0 +1 @@
+../DIR_MAKEFILE
\ No newline at end of file
diff --git a/tests/misc/hypersetup/Makefile b/tests/misc/hypersetup/Makefile
deleted file mode 100644
index 7931aaf..0000000
--- a/tests/misc/hypersetup/Makefile
+++ /dev/null
@@ -1,3 +0,0 @@
-test:
-	latexmk -c test.tex
-	latexmk -dvi- -pdf test.tex
diff --git a/tests/misc/hypersetup/Makefile b/tests/misc/hypersetup/Makefile
new file mode 120000
index 0000000..0fde22c
--- /dev/null
+++ b/tests/misc/hypersetup/Makefile
@@ -0,0 +1 @@
+../../COMPILE_MAKEFILE
\ No newline at end of file
diff --git a/tests/misc/hypersetup/test.out b/tests/misc/hypersetup/test.out
deleted file mode 100644
index 1c879f7..0000000
--- a/tests/misc/hypersetup/test.out
+++ /dev/null
@@ -1 +0,0 @@
-\BOOKMARK [1][-]{section.1}{test}{}% 1
diff --git a/tests/misc/vocab/Makefile b/tests/misc/vocab/Makefile
deleted file mode 100644
index 7931aaf..0000000
--- a/tests/misc/vocab/Makefile
+++ /dev/null
@@ -1,3 +0,0 @@
-test:
-	latexmk -c test.tex
-	latexmk -dvi- -pdf test.tex
diff --git a/tests/misc/vocab/Makefile b/tests/misc/vocab/Makefile
new file mode 120000
index 0000000..0fde22c
--- /dev/null
+++ b/tests/misc/vocab/Makefile
@@ -0,0 +1 @@
+../../COMPILE_MAKEFILE
\ No newline at end of file
diff --git a/tests/misc/vocab/vocabindex.idx b/tests/misc/vocab/vocabindex.idx
deleted file mode 100644
index 7889d72..0000000
--- a/tests/misc/vocab/vocabindex.idx
+++ /dev/null
@@ -1 +0,0 @@
-\indexentry{Test}{1}
diff --git a/tests/misc/vocab/vocabindex.ilg b/tests/misc/vocab/vocabindex.ilg
deleted file mode 100644
index 92ed096..0000000
--- a/tests/misc/vocab/vocabindex.ilg
+++ /dev/null
@@ -1,6 +0,0 @@
-This is makeindex, version 2.15 [TeX Live 2019] (kpathsea + Thai support).
-Scanning input file vocabindex.idx....done (1 entries accepted, 0 rejected).
-Sorting entries...done (0 comparisons).
-Generating output file vocabindex.ind....done (5 lines written, 0 warnings).
-Output written in vocabindex.ind.
-Transcript written in vocabindex.ilg.
diff --git a/tests/misc/vocab/vocabindex.ind b/tests/misc/vocab/vocabindex.ind
deleted file mode 100644
index daf8d44..0000000
--- a/tests/misc/vocab/vocabindex.ind
+++ /dev/null
@@ -1,5 +0,0 @@
-\begin{theindex}
-
-  \item Test, 1
-
-\end{theindex}
diff --git a/tests/utils/Makefile b/tests/utils/Makefile
deleted file mode 100644
index 61533ed..0000000
--- a/tests/utils/Makefile
+++ /dev/null
@@ -1,7 +0,0 @@
-SUBDIRS := $(wildcard */.)
-
-all: $(SUBDIRS)
-$(SUBDIRS):
-		$(MAKE) -C $@
-
-.PHONY: all $(SUBDIRS)
diff --git a/tests/utils/Makefile b/tests/utils/Makefile
new file mode 120000
index 0000000..63f6ffd
--- /dev/null
+++ b/tests/utils/Makefile
@@ -0,0 +1 @@
+../DIR_MAKEFILE
\ No newline at end of file
diff --git a/tests/utils/counters/Makefile b/tests/utils/counters/Makefile
deleted file mode 100644
index 7931aaf..0000000
--- a/tests/utils/counters/Makefile
+++ /dev/null
@@ -1,3 +0,0 @@
-test:
-	latexmk -c test.tex
-	latexmk -dvi- -pdf test.tex
diff --git a/tests/utils/counters/Makefile b/tests/utils/counters/Makefile
new file mode 120000
index 0000000..0fde22c
--- /dev/null
+++ b/tests/utils/counters/Makefile
@@ -0,0 +1 @@
+../../COMPILE_MAKEFILE
\ No newline at end of file
diff --git a/tests/utils/findpackage/Makefile b/tests/utils/findpackage/Makefile
deleted file mode 100644
index 7931aaf..0000000
--- a/tests/utils/findpackage/Makefile
+++ /dev/null
@@ -1,3 +0,0 @@
-test:
-	latexmk -c test.tex
-	latexmk -dvi- -pdf test.tex
diff --git a/tests/utils/findpackage/Makefile b/tests/utils/findpackage/Makefile
new file mode 120000
index 0000000..0fde22c
--- /dev/null
+++ b/tests/utils/findpackage/Makefile
@@ -0,0 +1 @@
+../../COMPILE_MAKEFILE
\ No newline at end of file
diff --git a/tests/wip/Makefile b/tests/wip/Makefile
deleted file mode 100644
index 61533ed..0000000
--- a/tests/wip/Makefile
+++ /dev/null
@@ -1,7 +0,0 @@
-SUBDIRS := $(wildcard */.)
-
-all: $(SUBDIRS)
-$(SUBDIRS):
-		$(MAKE) -C $@
-
-.PHONY: all $(SUBDIRS)
diff --git a/tests/wip/Makefile b/tests/wip/Makefile
new file mode 120000
index 0000000..63f6ffd
--- /dev/null
+++ b/tests/wip/Makefile
@@ -0,0 +1 @@
+../DIR_MAKEFILE
\ No newline at end of file
diff --git a/tests/wip/proof/Makefile b/tests/wip/proof/Makefile
deleted file mode 100644
index 5c90a51..0000000
--- a/tests/wip/proof/Makefile
+++ /dev/null
@@ -1,4 +0,0 @@
-skip: .skip
-
-.skip:
-	@touch .skip
diff --git a/tests/wip/proof/Makefile b/tests/wip/proof/Makefile
new file mode 120000
index 0000000..0fde22c
--- /dev/null
+++ b/tests/wip/proof/Makefile
@@ -0,0 +1 @@
+../../COMPILE_MAKEFILE
\ No newline at end of file
diff --git a/tests/wip/restate/Makefile b/tests/wip/restate/Makefile
deleted file mode 100644
index 7931aaf..0000000
--- a/tests/wip/restate/Makefile
+++ /dev/null
@@ -1,3 +0,0 @@
-test:
-	latexmk -c test.tex
-	latexmk -dvi- -pdf test.tex
diff --git a/tests/wip/restate/Makefile b/tests/wip/restate/Makefile
new file mode 120000
index 0000000..0fde22c
--- /dev/null
+++ b/tests/wip/restate/Makefile
@@ -0,0 +1 @@
+../../COMPILE_MAKEFILE
\ No newline at end of file