| Commit message (Collapse) | Author | Age | Files | Lines |
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And only create the source image once.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
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Use a similar surface to create an equivalent backing surface for
any backend, thus enabling the test to run against any target.
The comment about forcing fallbacks has long since been false.
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Previously the test was using the preamble vfunc and generating output
itself. Now it uses the draw function and ignores any but the xlib
backends.
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We frequently use '-' within the test name or format name and so we
encounter confusion as '-' is also used as the field separator. At times
this has caused a new test to break an old test because the new test would
match one of the old test's target specific reference images. So switch
everything over to use '.' between fields (test name, target, format,
subtest, etc.).
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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.
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Use cairo_get_target() to propagate errors from secondary contexts.
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As Behdad suggested, we can dramatically speed up the test suite by
short-circuiting the write to a png file, only to then immediately read it
back in. So for the raster based surfaces, we avoid the round-trip through
libpng by implementing a new boilerplate method to directly extract the image
buffer from the test result. A secondary speedup is achieved by caching the
most recent reference image.
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77 is the magic exit code used by automake to indicate a skipped test, so
by using it we can get a slightly more informative test log.
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Allow individuals tests to check whether a test target is enabled -
useful for those tests that circumvent cairo_test() and perform
feature testing.
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In order to run under memfault, the framework is first extended to handle
running concurrent tests - i.e. multi-threading. (Not that this is a
requirement for memfault, instead it shares a common goal of storing
per-test data). To that end all the global data is moved into a per-test
context and the targets are adjusted to avoid overlap on shared, global
resources (such as output files and frame buffers). In order to preserve
the simplicity of the standard draw routines, the context is not passed
explicitly as a parameter to the routines, but is instead attached to the
cairo_t via the user_data.
For the masochist, to enable the tests to be run across multiple threads
simply set the environment variable CAIRO_TEST_NUM_THREADS to the desired
number.
In the long run, we can hope the need for memfault (runtime testing of
error paths) will be mitigated by static analysis. A promising candidate
for this task would appear to be http://hal.cs.berkeley.edu/cil/.
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This bug first was fixed in 40558cb15e5f7276a29847b00c9dae08b9d9380e,
but then reintroduced in 9cfd82e87b60c0d65e9cafda026cb9a498874575, which
became part of the 1.6.2 quick release.
As penance to make sure I never repeat this same bug again, I offer this
test case which exercises the XSetClipMask(NULL) path and hopefully
simulates some 'typical' usage of cairo by GUI toolkits.
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