This test is intended to check the file source / sink
operability. To do that, the following processing chain
is being composed:
source/file -> proc/dummy -> sink/file (stdout)
The source item opens the sample file named 'io_sample.txt'
for reading. The next processing item simply converts all
uppercase latters to the lowercase. The last one writes
the result to stdout.
This processing cycle is being repeated several times
with different block length values.
This test is intended to validate the processing queue
management API. Moreover, the talloc debugging API is
used to ensure that there are no memory leaks.
First, four processing queues are being allocated. One
of them is empty, while others have different count of
items. Then the human-readable description is being
generated for all of them. And finally, the processing
and exit cllback are being tested.
During the test execution, the talloc NULL-context
tracking feature is enabled, allowing to observe every
memory allocation within the libosmogapk, and to detect
memory leaks.
Vadim Yanitskiy