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Peter Hutterer 912402fd71 include: introduce byte counting functions. 
This patch adds the following three functions:
 bits_to_bytes(bits) - the number of bytes needed to hold 'bits'
 bytes_to_int32(bytes) - the number of 4-byte units to hold 'bytes'
 pad_to_int32(bytes) - the closest multiple of 4 equal to or larger than
                        'bytes'.

All three operations are common in protocol processing and currently the
server has ((foo + 7)/8 + 3)/4 operations all over the place. A common set
of functions reduce the error rate of these (albeit simple) calculations and
improve readability of the code.

The functions do not check for overflow.

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
2009-07-14 10:05:53 +10:00
..
input.c include: introduce byte counting functions. 2009-07-14 10:05:53 +10:00
Makefile.am Revert "test: check from INT_MIN to INT_MAX for core type conversion" 2009-06-05 16:45:28 +10:00
README Add a test-suite for in-server unit-testing. 2009-04-28 16:03:56 +10:00
xkb.c Add a test-suite for in-server unit-testing. 2009-04-28 16:03:56 +10:00

README 

                        X server test suite

This suite contains a set of tests to verify the behaviour of functions used
internally to the server. This test suite is based on glib's testing
framework [1].

= How it works =
Through some automake abuse, we link the test programs with the same static
libraries as the Xorg binary. The test suites can then call various functions
and verify their behaviour - without the need to start the server or connect
clients.

This testing only works for functions that do not rely on a particular state
of the X server. Unless the test suite replicates the expected state, which
may be difficult.

= How to run the tests =
Run "make check" the test directory. This will compile the tests and execute
them in the order specified in the TESTS variable in test/Makefile.am.

Each set of tests related to a subsystem are available as a binary that can be
executed directly. For example, run "xkb" to perform some xkb-related tests.

== Adding a new test ==
When adding a new test, ensure that you add a short description of what the
test does and what the expected outcome is. If the test reproduces a
particular bug, using g_test_bug().

== Misc ==

The programs "gtester" and "gtester-report" may be used to generate XML/HTML
log files of tests succeeded and failed.

---------

[1] http://library.gnome.org/devel/glib/stable/glib-Testing.html