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tests/README: extended and reformatted

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Daniel Stenberg 2011-09-27 22:13:40 +02:00
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@ -6,13 +6,44 @@
The cURL Test Suite
Requires:
1. Running
1.1 Requires to run
1.2 Port numbers used by test servers
1.3 Test servers
1.4 Run
1.5 Shell startup scripts
1.6 Memory test
1.7 Debug
1.8 Logs
1.9 Test input files
1.10 Code coverage
1.11 Remote testing
2. Numbering
2.1 Test case numbering
3. Write tests
3.1 test data
3.2 curl tests
3.3 libcurl tests
3.4 unit tests
4. TODO
4.1 More protocols
4.2 SOCKS auth
==============================================================================
1. Running
1.1 Requires to run
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:
1.2 Port numbers used by test servers
- TCP/8990 for HTTP
- TCP/8991 for HTTPS
@ -28,25 +59,36 @@ Ports used by default:
- TCP/9001 for POP3
- TCP/9002 for IMAP
- TCP/9003 for SMTP
- TCP/9004 for SMTP IPv6
- TCP/9005 for RTSP
- TCP/9006 for RTSP IPv6
- TCP/9007 for GOPHER
- TCP/9008 for GOPHER IPv6
- TCP/9008 for HTTPS server with TLS-SRP support
1.3 Test servers
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.
servers on the ports listed above 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.
The base port number (8990), which all the individual port numbers are
indexed from, can be set explicitly using runtests.pl' -b option to allow
running more than one instance of the test suite simultaneously on one
machine, or just move the servers in case you have local services on any of
those ports.
1.4 Run
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
the script from aborting 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.
@ -56,7 +98,8 @@ Run:
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:
1.5 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
@ -71,44 +114,45 @@ Shell startup scripts:
output of a shell startup script. Locate, cleanup or adjust the shell
script.
Memory:
1.6 Memory test
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.
automatically detect if that is the case, and it will use the
'memanalyze.pl' 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.
Also, if you run tests on a machine where valgrind is found, the script will
use valgrind to run the test with (unless you use -n) to further verify
correctness.
runtests.pl's -t option will enable torture testing mode, which runs each
test many times and makes each different memory allocation 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.
1.7 Debug
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 <test number> -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:
1.8 Logs
# gdb ../curl/src core
All logs are generated in the logs/ subdirectory (it is emptied first in the
runtests.pl script). Use runtests.pl -k to force it to keep the temporary
files after the test run since successful runs will clean it up otherwise.
... and get a stack trace with the gdb command:
1.9 Test input files
(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:
1.10 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
@ -125,38 +169,83 @@ Code coverage:
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:
1.11 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
2. Numbering
So far, we've used this system:
2.1 Test case numbering
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 - 1299 miscellaneous*
1300 - 1399 unit tests*
1400 - 1999 miscellaneous*
2000 - x multiple sequential protocols per test case*
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 - 1299 miscellaneous*
1300 - 1399 unit tests*
1400 - 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.
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:
3. Write tests
* Add tests for TELNET, LDAP, DICT...
* SOCKS4/5 test deficiencies - no proxy authentication tests as SSH (the
test mechanism) doesn't support them
Here's a quick description on writing test cases. We basically have three
kinds of tests: the ones that test the curl tool, the ones that build small
applications and test libcurl directly and the unit tests that test
individual (possibly internal) functions.
3.1 test data
Each test has a master file that controls all the test data. What to read,
what the protocol exchange should look like, what exit code to expect and
what command line arguments to use etc.
These files are tests/data/test[num] where [num] is described in section 2
of this document, and the XML-like file format of them is described in the
separate tests/FILEFORMAT document.
3.2 curl tests
A test case that runs the curl tool and verifies that it gets the correct
data, it sends the correct data, it uses the correct protocol primitives
etc.
3.3 libcurl tests
The libcurl tests are identical to the curl ones, except that they use a
specific and dedicated custom-built program to run instead of "curl". This
tool is built from source code placed in tests/libtest and if you want to
make a new libcurl test that is where you add your code.
3.4 unit tests
Unit tests are tests in the 13xx sequence and they are placed in tests/unit.
There's a tests/unit/README describing the specific set of checks and macros
that may be used when writing tests that verify behaviors of specific
individual functions.
The unit tests depend on curl being built with debug enabled.
4. TODO
4.1 More protocols
Add tests for TELNET, LDAP, DICT...
4.2 SOCKS auth
SOCKS4/5 test deficiencies - no proxy authentication tests as SSH (the
test mechanism) doesn't support them