diff --git a/test/testing.sh b/test/testing.sh
index 9d5d48d..3e3204b 100755
--- a/test/testing.sh
+++ b/test/testing.sh
@@ -8,7 +8,7 @@ set -e
 
 ## -- pass getopts
 
-usage() { echo "Usage: dev-install.sh [-q]"; }
+usage() { echo "Usage: testing.sh [-q]"; }
 
 verbose=1
 
@@ -23,7 +23,15 @@ while getopts ":q" opt; do
 done
 
 ## -- variables
+# colors
+Red="\033[0;31m"
+Green="\033[0;32m"
+Reset="\033[0;m"
+# directory
 TESTDIR="../test"
+if [ -d ../tikz-trackschematic ]; then
+  cd test/
+fi
 
 ## -- commands
 
@@ -83,6 +91,10 @@ check_imagemagick() {
 check_tex_distro
 check_trackschematic
 check_imagemagick
+if [ ! -d $TESTDIR ]; then
+  echo "${Red}Do not find test directory!${Reset}"
+  exit 1
+fi
 
 if [ "`echo -n`" = "-n" ]; then
   n=""
@@ -92,24 +104,12 @@ else
   c=""
 fi
 
-## -- doing the tests
-#
-# compare metrics
-#
-# AE:    absolute error count, number of different pixels (-fuzz affected)
-# DSSIM: structural dissimilarity index
-# FUZZ:  mean color distance
-# MAE:   mean absolute error (normalized), average channel error distance
-# MEPP:  mean error per pixel (normalized mean error, normalized peak error)
-# MSE:   mean error squared, average of the channel error squared
-# NCC:   normalized cross correlation
-# PAE:   peak absolute (normalized peak absolute)
-# PHASH: perceptual hash for the sRGB and HCLp colorspaces.
-# PSNR:  peak signal to noise ratio
-# RMSE:  root mean squared (normalized root mean squared)
-# SSIM:  structural similarity index
+## -- Testing
 
-mkdir -p .testing
+mkdir -p .tex
+test_status=0
+# Start with an empty List:
+FAILED=""
 
 if [ $verbose = 1 ]; then
   echo "==========="
@@ -118,22 +118,100 @@ if [ $verbose = 1 ]; then
 fi
 
 for TEST in `ls $TESTDIR/*.tex`; do
+  # setup
   FILE=$(basename "$TEST") # remove path
   NAME=${FILE%.*} # remove extension
+  add_to_list=0
+  #
   if [ $verbose = 1 ]; then
-    echo $n " - '$NAME' test: $c"
+    echo "$NAME test:"
   fi
-  pdflatex -output-directory=.testing -interaction=batchmode -halt-on-error $FILE 2>&1 > /dev/null
-  if [ $verbose = 1 ]; then
-    echo $n "build complete, $c" # it is actually not in percent! But it helps them humans...
+  #
+  #
+  ## TeX build
+  #
+  exit_code_pdflatex=0
+  pdflatex -output-directory=.tex -interaction=batchmode -halt-on-error ${NAME}.tex >> /dev/null 2>&1 || exit_code_pdflatex=1
+  # understanding TeX statistics:
+  #   -> https://tex.stackexchange.com/questions/26208/components-of-latexs-memory-usage
+  # TOP=$(grep -n "Here is how much of TeX's memory you used:" .tex/${NAME}.log | cut -d: -f1)
+  # BOTTOM=$(($(grep -n "stack positions out of" .tex/${NAME}.log | cut -d: -f1) + 1))
+  # awk "NR>$TOP&&NR<$BOTTOM" .tex/${NAME}.log  > .tex/${NAME}.statistics.log
+  memory_usage=$(grep "words of memory out of" .tex/${NAME}.log | cut -d " " -f2)
+  memory_usage=$(($memory_usage/1000))
+  if [ $exit_code_pdflatex = 0 ]; then
+    if [ $verbose = 1 ]; then
+      echo $n " - ${Green}build succesful${Reset}: $c"
+      echo "${memory_usage}k of memory used."
+      # cat .tex/${NAME}.statistics.log
+    fi
+  else
+    test_status=1
+    add_to_list=1
+    if [ $verbose = 1 ]; then
+      echo " - ${Red}build failed${Reset}."
+    fi
   fi
-  compare -metric RMSE -colorspace RGB .testing/${NAME}.pdf ${NAME}_expected.pdf NULL:
-  if [ $verbose = 1 ]; then
-    echo "% difference." # it is actually not in percent! But it helps them humans...
+  #
+  #
+  ## compare images
+  #
+  # compare metrics
+  # AE:    absolute error count, number of different pixels (-fuzz affected)
+  # DSSIM: structural dissimilarity index
+  # FUZZ:  mean color distance
+  # MAE:   mean absolute error (normalized), average channel error distance
+  # MEPP:  mean error per pixel (normalized mean error, normalized peak error)
+  # MSE:   mean error squared, average of the channel error squared
+  # NCC:   normalized cross correlation
+  # PAE:   peak absolute (normalized peak absolute)
+  # PHASH: perceptual hash for the sRGB and HCLp colorspaces.
+  # PSNR:  peak signal to noise ratio
+  # RMSE:  root mean squared (normalized root mean squared)
+  # SSIM:  structural similarity index
+  #
+  exit_code_compare=0
+  compare -metric RMSE -colorspace RGB .tex/${NAME}.pdf ${NAME}_expected.pdf NULL: >> /dev/null 2>&1 || exit_code_compare=1
+  if [ $exit_code_compare = 0 ]; then
+    if [ $verbose = 1 ]; then
+      echo " - ${Green}comparison succesful${Reset}."
+    fi
+  else
+    test_status=1
+    add_to_list=1
+    if [ $verbose = 1 ]; then
+      echo " - ${Red}comparison failed${Reset}."
+    fi
+  fi
+  #
+  #
+  ## if a test failed add to list
+  if [ $add_to_list = 1 ]; then
+    if [ -z $FAILED ]; then
+      # first item
+      FAILED="$NAME"
+    else
+      FAILED="$FAILED, $NAME"
+    fi
   fi
 done
 
-if [ $verbose = 1 ]; then
-  echo "-----------"
-  echo "tests passed!"
+## -- finishing
+
+if [ $test_status = 0 ]; then
+  if [ $verbose = 1 ]; then
+    echo "-----------"
+    echo "${Green}All tests passed!${Reset}"
+  fi
+  exit 0
+else
+  if [ $verbose = 1 ]; then
+    echo "-----------"
+    echo "${Red}The following tests failed: ${FAILED}!${Reset}"
+  else
+    echo "${Red}Some or all tests failed!${Reset}"
+  fi
+  exit 1
 fi
+
+EOF
\ No newline at end of file