rtla/tests: Add unit tests for -A/--aligned option

Add both parse_args() and opt_* tests for the newly added -A/--aligned
option.

Assisted-by: Claude:claude-4.5-opus-high-thinking
Link: https://lor

rtla/tests: Add unit tests for -A/--aligned option

Add both parse_args() and opt_* tests for the newly added -A/--aligned
option.

Assisted-by: Claude:claude-4.5-opus-high-thinking
Link: https://lore.kernel.org/r/20260527144928.2944472-2-tglozar@redhat.com
Signed-off-by: Tomas Glozar <tglozar@redhat.com>

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rtla/tests: Add unit tests for CLI option callbacks

In addition to testing all tool_parse_args() functions, test also all
callbacks used for parsing custom option formats.

The callbacks represent a

rtla/tests: Add unit tests for CLI option callbacks

In addition to testing all tool_parse_args() functions, test also all
callbacks used for parsing custom option formats.

The callbacks represent a middle layer between the parsing functions
and utility functions dedicated to checking specific argument formats,
for example, scheduling class and duration. Callback tests are run
before parsing functions to make sure any issue in the former is
reported before it is encountered through the latter.

Tests verify both successful parsing and proper rejection of invalid
inputs (via exit tests). To enable testing static callbacks, a pragma
once guard is added to timerlat.h for safe inclusion by cli_p.h.

Add dependency of UNIT_TESTS_IN on LIBSUBCMD_INCLUDES, as the new test
file tests/unit/cli_opt_callback.c includes cli_p.h which includes
subcmd/parse-options.h.

Link: https://lore.kernel.org/r/20260528103254.2990068-7-tglozar@redhat.com
Signed-off-by: Tomas Glozar <tglozar@redhat.com>

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rtla/tests: Add unit tests for _parse_args() functions

Add a test suite for the _parse_args() function of each tool that checks
the params structures (struct common_params, struct osnoise_params,
st

rtla/tests: Add unit tests for _parse_args() functions

Add a test suite for the _parse_args() function of each tool that checks
the params structures (struct common_params, struct osnoise_params,
struct timerlat_params) returned by them for correctness.

One test case is added per option, as well as a few special cases for
tricky combinations of options. Test cases are ordered the same as the
option arrays and help message to allow easy checking of whether all
options are covered.

This should help clarify what the proper command line behavior of RTLA
is in case there are holes in the documentation and verify that the
intended behavior is implemented correctly.

A few necessary changes to the unit tests were done as part of this
commit:

- Unit tests now also link to libsubcmd and its dependencies.
- A new global variable in_unit_test is added to RTLA's CLI interface,
causing it to skip check for root if running in unit tests. This
allows the CLI unit tests to run as non-root, like existing unit
tests.

There is quite a lot of duplication, some of it is mitigated with macros,
but partially it is intentional so that future changes in behavior are
tracked across tools.

Link: https://lore.kernel.org/r/20260528103254.2990068-6-tglozar@redhat.com
Signed-off-by: Tomas Glozar <tglozar@redhat.com>

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rtla/tests: Add unit test for restoring continue flag

In case an action preceding the continue action fails, not only
the continue flag should not be set, it should be unset if it was set
from a pre

rtla/tests: Add unit test for restoring continue flag

In case an action preceding the continue action fails, not only
the continue flag should not be set, it should be unset if it was set
from a previous run of actions_perform().

Add a unit test to check if this is implemented correctly.

Link: https://lore.kernel.org/r/20260526102523.2662391-2-tglozar@redhat.com
Signed-off-by: Tomas Glozar <tglozar@redhat.com>

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rtla/tests: Add unit tests for actions module

Add unit tests covering all functions in the actions module, including
both valid and invalid inputs and all action types, except for
actions_perform(),

rtla/tests: Add unit tests for actions module

Add unit tests covering all functions in the actions module, including
both valid and invalid inputs and all action types, except for
actions_perform(), where only shell and continue actions are tested.

To support testing multiple modules, the unit test build was modified so
that it links the entire rtla-in.o file. For this to work, the main()
function in rtla.c was declared weak, so that the unit test main is able
to override it.

Other included minor changes to unit tests are:

- Make unit test output verbose to show which tests are being run, now
that we have more than 3 tests.
- Add unit_tests file to .gitignore.
- Split unit test sources to one file per test suite, and keep only
main() function in unit_tests.c.
- Fix Makefile dependencies so that "make unit-tests" will rebuild the
binary with the changes in the commit.

Also with the linking the entire rtla-in.o file, it now has rtla's
nr_cpus symbol, so the declaration in utils unit tests is made extern.

Assisted-by: Composer:composer-2-fast
Link: https://lore.kernel.org/r/20260424140244.958495-1-tglozar@redhat.com
Signed-off-by: Tomas Glozar <tglozar@redhat.com>

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