curl/tests

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The cURL Test Suite

Requires:
perl (and a unix-style shell)
diff (when a test fails, a diff is shown)
stunnel (for HTTPS and FTPS tests)
OpenSSH or SunSSH (for SCP, SFTP and SOCKS4/5 tests)

Ports used by default:

- TCP/8990 for HTTP
- TCP/8991 for HTTPS
- TCP/8992 for FTP
- TCP/8993 for FTPS
- TCP/8994 for HTTP IPv6
- TCP/8995 for FTP (2)
- TCP/8996 for FTP IPv6
- UDP/8997 for TFTP
- UDP/8998 for TFTP IPv6
- TCP/8999 for SCP/SFTP
- TCP/9000 for SOCKS
- TCP/9001 for POP3
- TCP/9002 for IMAP
- TCP/9003 for SMTP

The test suite runs simple FTP, POP3, IMAP, SMTP, HTTP and TFTP stand-alone
servers on these ports to which it makes requests. For SSL tests, it runs
stunnel to handle encryption to the regular servers. For SSH, it runs a
standard OpenSSH server. For SOCKS4/5 tests SSH is used to perform the SOCKS
functionality and requires a SSH client and server.

The base port number shown above can be changed using runtests' -b option
to allow running more than one instance of the test suite simultaneously
on one machine.

Run:
'make test'. This builds the test suite support code and invokes the
'runtests.pl' perl script to run all the tests. Edit the top variables
of that script in case you have some specific needs, or run the script
manually (after the support code has been built).

The script breaks on the first test that doesn't do OK. Use -a to prevent
the script from abort on the first error. Run the script with -v for more
verbose output. Use -d to run the test servers with debug output enabled as
well. Specifying -k keeps all the log files generated by the test intact.

Use -s for shorter output, or pass test numbers to run specific tests only
(like "./runtests.pl 3 4" to test 3 and 4 only). It also supports test case
ranges with 'to', as in "./runtests 3 to 9" which runs the seven tests from
3 to 9. Any test numbers starting with ! are disabled, as are any test
numbers found in the file data/DISABLED (one per line).

Shell startup scripts:
Tests which use the ssh test server, SCP/SFTP/SOCKS tests, might be badly
influenced by the output of system wide or user specific shell startup
scripts, .bashrc, .profile, /etc/csh.cshrc, .login, /etc/bashrc, etc. which
output text messages or escape sequences on user login. When these shell
startup messages or escape sequences are output they might corrupt the
expected stream of data which flows to the sftp-server or from the ssh
client which can result in bad test behaviour or even prevent the test
server from running.

If the test suite ssh or sftp server fails to start up and logs the message
'Received message too long' then you are certainly suffering the unwanted
output of a shell startup script. Locate, cleanup or adjust the shell
script.

Memory:
The test script will check that all allocated memory is freed properly IF
curl has been built with the CURLDEBUG define set. The script will
automatically detect if that is the case, and it will use the ../memanalyze
script to analyze the memory debugging output.

The -t option will enable torture testing mode, which runs each test
many times but causes a different memory allocation to fail on each
successive run. This tests the out of memory error handling code to
ensure that memory leaks do not occur even in those situations.

Debug:
If a test case fails, you can conveniently get the script to invoke the
debugger (gdb) for you with the server running and the exact same command
line parameters that failed. Just invoke 'runtests.pl -g' and
then just type 'run' in the debugger to perform the command through the
debugger.

If a test case causes a core dump, analyze it by running gdb like:

# gdb ../curl/src core

... and get a stack trace with the gdb command:

(gdb) where

Logs:
All logs are generated in the logs/ subdirectory (it is emptied first
in the runtests.pl script). Use runtests.pl -k to keep the temporary files
after the test run.

Data:
All test cases are put in the data/ subdirectory. Each test is stored in the
file named according to the test number.

See FILEFORMAT for the description of the test case files.

Code coverage:
gcc provides a tool that can determine the code coverage figures for
the test suite. To use it, configure curl with
CFLAGS='-fprofile-arcs -ftest-coverage -g -O0'. Make sure you run the normal
and torture tests to get more full coverage, i.e. do:

make test
make test-torture

The graphical tool ggcov can be used to browse the source and create
coverage reports on *NIX hosts:

ggcov -r lib src

The text mode tool gcov may also be used, but it doesn't handle object files
in more than one directory very well.

Remote testing:
The runtests.pl script provides some hooks to allow curl to be tested on a
machine where perl can not be run. The test framework in this case runs on
a workstation where perl is available, while curl itself is run on a remote
system using ssh or some other remote execution method. See the comments at
the beginning of runtests.pl for details.

TEST CASE NUMBERS

So far, we've used this system:

1 - 99 HTTP
100 - 199 FTP*
200 - 299 FILE*
300 - 399 HTTPS
400 - 499 FTPS
500 - 599 libcurl source code tests, not using the curl command tool
600 - 699 SCP/SFTP
700 - 799 SOCKS4 (even numbers) and SOCK5 (odd numbers)
800 - 899 POP3, IMAP, SMTP
1000 - 1999 miscellaneous*
2000 - x multiple sequential protocols per test case*

Since 30-apr-2003, there's nothing in the system that requires us to keep
within these number series, and those sections marked with * actually
contain tests for a variety of protocols. Each test case now specifies
its own server requirements, independent of test number.

TODO:

* Add tests for TELNET, LDAP, DICT...
* SOCKS4/5 test deficiencies - no proxy authentication tests as SSH (the
test mechanism) doesn't support them