This makes the results of the test suite more stable across different
environments, because it does not rely anymore on
CAIRO_FONT_FAMILY_DEFAULT (which on Windows is "Arial", on Mac
"Helvetica").
This change should not affect Linux environments, assuming that the
default font is already set to "DejaVu Sans".
Do not use the simple malloc() as memfault will inject allocation failures
(unlike xmalloc() for which faults are excluded) - as this is unnecessary
inside the test harness and thus does not exercise any cairo code paths.
Avoid calling libtool to link every single test case, by building just one
binary from all the sources.
This binary is then given the task of choosing tests to run (based on user
selection and individual test requirement), forking each test into its own
process and accumulating the results.
Within _cairo_xlib_surface_emit_glyphs() there are a number of
complications to do with packing as many glyphs as possible into a
single XRenderCompositeGlyph*() call. Essentially these consist of
choosing the right function and packing for the current glyphs, describing
runs of glyphs and ensuring that we do not exceed the maximum request size
within a single call. So we add to the test case we an attempt to show 64k
2-byte glyphs and an attempt to mix 64k 1-byte and 2-byte glyphs, with the
change-over point chosen to overflow the maximum request size, should
_cairo_xlib_surface_emit_glyphs() naively resize the current request.
Moral of this story is bugs cluster. If we made a mistake, especially in a
complicated bit of code that is interfacing with another library, then we
are likely to make a similar mistake in future. Disabling this test hid a
regression between 1.4 and 1.6.
- Remove cairo_test_expect_failure. cairo-test.c now checks
env var CAIRO_XFAIL_TESTS to see if the running test is
expected to fail. The reason for expected failure is
appended to the test description.
- Test description is written out.
- Failed/crashed tests also write a line out to stderr (in red),
so one can now redirect stdout to /dev/null to only see failures.
- cairo_test() has been changed to not take the draw function
anymore, instead, draw function is now part of the test struct.
- "make check" doesn't allow limiting backends to test using env
var anymore. To limit backends to test, one should use the
TARGETS variable on the make command line.
- "make check-valgrind" now writes its log to valgrind-log instead
of valgrind.log, to not interfere with test log file processing.
