Add tests from the old svn tree

We're losing the svn history (which we could probably keep if we tried
hard enough) but don't consider that worthwhile.

Note these tests are destructive, so run them only in a throwaway
environment like a chroot, container, or vm.

The tests/run.all script should be the one which launches all the tests.

Signed-off-by: Serge Hallyn <serge.hallyn@ubuntu.com>

tests/su/10_su_sulog_success/run_su.exp

@@ -0,0 +1,73 @@
+#!/usr/bin/expect
+
+set timeout 2
+expect_after default {puts "\nFAIL"; exit 1}
+
+if {$argc != 3} {
+	puts "usage: run_su.exp <user> <password> <prompt>"
+	exit 1
+}
+
+set user     [lindex $argv 0]
+set password [lindex $argv 1]
+set prompt   [lindex $argv 2]
+
+# First, switch to the testsuite user
+# (otherwise, no password will be asked)
+send_user "# switch to the passwordless 'testsuite' user\n"
+send_user "# and expect a '$ ' 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"
+		exit 1
+	}
+	"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\\)" {
+				expect "$prompt"
+				send "exit\r"
+				expect "$ "
+				puts "\nPASS"
+				exit 0
+			}
+		}
+	}
+}
+
+puts "\ntimeout...FAIL"
+exit 1