Added comments for the test log.

tests/su/01/run_su.exp

@@ -14,9 +14,17 @@ set prompt   [lindex $argv 2]
 
 # First, switch to the testsuite user
 # (otherwise, no password will be asked)
+send_user "# switch to the passwordless 'testsuite' user\n"
+send_user "# and expect a '$ ' prompt\n"
 spawn /bin/su testsuite
+
 expect "$ "			;# Wait for the prompt
+
+send_user "\n# make sure we are now 'testsuite'"
+send_user "\n# id should return 'uid=424243(testsuite) gid=424243 groups=424243'"
+send "\r"			;# restore the prompt for the logs
 send "id\r"			;# Verify we are really testsuite
+
 expect {
 	timeout {
 		puts "\ntimeout...FAIL"
@@ -25,16 +33,30 @@ expect {
 	"uid=424243(testsuite) gid=424243 groups=424243"
 }
 
+expect "$ "			;# Wait for the prompt
+
+send_user "\n\n"
+send_user "# now switch to user '$user'\n"
+send_user "# and expect a password prompt"
+send "\r"			;# restore the prompt for the logs
 send "su $user\r"		;# Switch to the user
 expect "Password: "		;# Wait for the Password: prompt
 # Wait a little bit more (su is not ready to receive the password)
 sleep 0.1
+
 send "$password\r"		;# Send the password
 
+send_user "\n# password '$password' sent\n\n"
+send_user "# expect prompt '$prompt'"
+
 expect {
 	# Wait for the new prompt
 	"$prompt" {
+		send_user "\n\n# make sure we are '$user'\n"
+		send_user "# id should return '($user).*($user).*($user)"
+		send "\r"	;# restore the prompt for the logs
 		send "id\r"	;# Verify the id
+
 		expect {
 			-re "\\($user\\).*\\($user\\).*\\($user\\)" {
 				puts "PASS"