diff --git a/install_ubuntu_common.bash b/install_ubuntu_common.bash
index 4e20620..a545a20 100755
--- a/install_ubuntu_common.bash
+++ b/install_ubuntu_common.bash
@@ -98,16 +98,6 @@ function ubuntu_set_autostart() {
     #TODO test, exception handling
 }
 
-function _test_commands() {
-    RESULT=0  # success by default
-
-    bloom-release --help || RESULT=1
-    catkin --help || RESULT=1
-    rosdep --help || RESULT=1
-    wstool --help || RESULT=1
-    return $RESULT
-}
-
 function install_docker() {
     RESULT=0  # success by default
 
@@ -289,4 +279,4 @@ install_oraclejava
 install_eclipse
 
 # Test some commands to check installation
-_test_systems
+source $CI_SOURCE_PATH/test/test_install.sh
diff --git a/test/test_install.sh b/test/test_install.sh
new file mode 100755
index 0000000..6ebfa7b
--- /dev/null
+++ b/test/test_install.sh
@@ -0,0 +1,31 @@
+#!/bin/bash
+
+function _test_commands() {
+    RESULT=0  # success by default
+
+    bloom-release --help || RESULT=1
+    catkin --help || RESULT=1
+    rosdep --help || RESULT=1
+    wstool --help || RESULT=1
+    return $RESULT
+}
+
+# Need to test https://github.com/130s/compenv_ubuntu/issues/3
+function test_display_env() {
+    #TODO
+    return
+}
+
+function _test_systems() {
+
+    _test_commands
+    retval_test_commands=$?
+    if [ $retval_test_commands -ne 0 ]; then echo "Error: not all commands are installed yet. Exiting.o"; exit 1; fi
+    
+    if [ ! -z $MSG_ENDROLL ]; then printf $MSG_ENDROLL; else echo "Script ends."; fi
+
+    test_display_env
+}
+
+# Here's kindf of main function.
+_test_systems