diff --git a/README.md b/README.md
index 077523b..4e37aa1 100644
--- a/README.md
+++ b/README.md
@@ -2,7 +2,7 @@
 
 [![Build Status](https://travis-ci.org/deadc0de6/catcli.svg?branch=master)](https://travis-ci.org/deadc0de6/catcli)
 [![License: GPL v3](https://img.shields.io/badge/License-GPL%20v3-blue.svg)](http://www.gnu.org/licenses/gpl-3.0)
-[![Coverage Status](https://coveralls.io/repos/github/deadc0de6/catcli/badge.svg?branch=master)](https://coveralls.io/github/deadc0de6/catcli?branch=master)
+[![Coveralls](https://img.shields.io/coveralls/github/deadc0de6/catcli)](https://coveralls.io/github/deadc0de6/catcli?branch=master)
 
 [![PyPI version](https://badge.fury.io/py/catcli.svg)](https://badge.fury.io/py/catcli)
 [![AUR](https://img.shields.io/aur/version/catcli-git.svg)](https://aur.archlinux.org/packages/catcli-git)
diff --git a/tests-ng/compare.sh b/tests-ng/compare.sh
index 9373eeb..090358b 100755
--- a/tests-ng/compare.sh
+++ b/tests-ng/compare.sh
@@ -61,7 +61,12 @@ src_keys="${tmpd}/src-keys"
 dst_keys="${tmpd}/dst-keys"
 cat "${src}" | jq '.. | keys?' | jq '.[]' > "${src_keys}"
 cat "${catalog}" | jq '.. | keys?' | jq '.[]' > "${dst_keys}"
+echo "src:"
+cat "${src_keys}"
+echo "dst:"
+cat "${dst_keys}"
 diff "${src_keys}" "${dst_keys}"
+echo "ok!"
 
 # compare children 1
 echo "compare children 1"
@@ -69,7 +74,12 @@ src_keys="${tmpd}/src-child1"
 dst_keys="${tmpd}/dst-child1"
 cat "${src}" | jq '. | select(.type=="top") | .children | .[].name' > "${src_keys}"
 cat "${catalog}" | jq '. | select(.type=="top") | .children | .[].name' > "${dst_keys}"
+echo "src:"
+cat "${src_keys}"
+echo "dst:"
+cat "${dst_keys}"
 diff "${src_keys}" "${dst_keys}"
+echo "ok!"
 
 # compare children 2
 echo "compare children 2"
@@ -77,7 +87,12 @@ src_keys="${tmpd}/src-child2"
 dst_keys="${tmpd}/dst-child2"
 cat "${src}" | jq '. | select(.type=="top") | .children | .[] | select(.name=="github") | .children | .[].name' > "${src_keys}"
 cat "${catalog}" | jq '. | select(.type=="top") | .children | .[] | select(.name=="github") | .children | .[].name' > "${dst_keys}"
+echo "src:"
+cat "${src_keys}"
+echo "dst:"
+cat "${dst_keys}"
 diff "${src_keys}" "${dst_keys}"
+echo "ok!"
 
 # compare children 3
 echo "compare children 3"
@@ -85,7 +100,12 @@ src_keys="${tmpd}/src-child3"
 dst_keys="${tmpd}/dst-child3"
 cat "${src}" | jq '. | select(.type=="top") | .children | .[] | select(.name=="github") | .children | .[] | select(.name=="workflows") | .children | .[].name' > "${src_keys}"
 cat "${catalog}" | jq '. | select(.type=="top") | .children | .[] | select(.name=="github") | .children | .[] | select(.name=="workflows") | .children | .[].name' > "${dst_keys}"
+echo "src:"
+cat "${src_keys}"
+echo "dst:"
+cat "${dst_keys}"
 diff "${src_keys}" "${dst_keys}"
+echo "ok!"
 
 # native
 echo "compare native output"
@@ -99,6 +119,7 @@ if command -v delta; then
   delta -s "tests-ng/assets/github.catalog.native.txt" "${mod}"
 fi
 diff --color=always "tests-ng/assets/github.catalog.native.txt" "${mod}"
+echo "ok!"
 
 # csv
 echo "compare csv output"
@@ -117,6 +138,7 @@ if command -v delta; then
   delta -s "${ori}" "${mod}"
 fi
 diff "${ori}" "${mod}"
+echo "ok!"
 
 # the end
 echo "test \"$(basename "$0")\" success"