#!/usr/bin/expect

set timeout 2

if {$argc != 3} {
	puts "usage: run_su <user> <password> <prompt>"
	exit 1
}

set user     [lindex $argv 0]
set password [lindex $argv 1]
set prompt   [lindex $argv 2]

# First, switch to the testsuite user
# (otherwise, no password will be asked)
spawn /bin/su testsuite
expect "$ "			;# Wait for the prompt
send "id\r"			;# Verify we are really testsuite
expect {
	timeout {
		puts "\ntimeout...FAIL"
		exit 1
	}
	"uid=424243(testsuite) gid=424243 groups=424243"
}

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

expect {
	# Wait for the new prompt
	"$prompt" {
		send "id\r"	;# Verify the id
		expect {
			-re "\\($user\\).*\\($user\\).*\\($user\\)" {
				puts "PASS"
				exit 0
			}
		}
	}
}

puts "\ntimeout...FAIL"
exit 1