unittests for the TValue::IsNull method

[ubyte]

Changelog entry

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Changelog category

• Not for changelog (changelog entry is not required)

Description for reviewers

LOGBROKER-10046

[github-actions]

⚪ 2025-10-31 11:57:57 UTC Pre-commit check linux-x86_64-relwithdebinfo for ab8fd4f has started.
⚪ 2025-10-31 11:58:00 UTC Artifacts will be uploaded here
⚪ 2025-10-31 11:59:25 UTC ya make is running...
🟡 2025-10-31 13:34:59 UTC Some tests failed, follow the links below. Going to retry failed tests...

Ya make output | Test bloat

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
39415	36597	0	1	2791	26

⚪ 2025-10-31 13:35:15 UTC ya make is running... (failed tests rerun, try 2)
🟡 2025-10-31 13:48:57 UTC Some tests failed, follow the links below. Going to retry failed tests...

Ya make output | Test bloat | Test bloat

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
49 (only retried tests)	30	0	1	0	18

⚪ 2025-10-31 13:49:00 UTC ya make is running... (failed tests rerun, try 3)
🟢 2025-10-31 13:58:02 UTC Tests successful.

Ya make output | Test bloat | Test bloat | Test bloat

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
36 (only retried tests)	23	0	0	0	13

🟢 2025-10-31 13:58:05 UTC Build successful.
🟢 2025-10-31 13:58:22 UTC ydbd size 2.3 GiB changed* by 0 Bytes, which is <= 0 Bytes vs main: OK

ydbd size dash	main: a04e6ba	merge: ab8fd4f	diff	diff %
ydbd size	2 426 565 360 Bytes	2 426 565 360 Bytes	0 Bytes	0.000%
ydbd stripped size	515 718 280 Bytes	515 718 280 Bytes	0 Bytes	0.000%

^{*please be aware that the difference is based on comparing your commit and the last completed build from the post-commit, check comparation}

[github-actions]

🟢 2025-10-31 11:58:01 UTC The validation of the Pull Request description is successful.

[github-actions]

⚪ 2025-10-31 11:58:05 UTC Pre-commit check linux-x86_64-release-asan for ab8fd4f has started.
⚪ 2025-10-31 11:58:09 UTC Artifacts will be uploaded here
⚪ 2025-10-31 11:59:35 UTC ya make is running...
🟡 2025-10-31 14:01:02 UTC Some tests failed, follow the links below. This fail is not in blocking policy yet

Ya make output | Test bloat

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
15823	15308	0	222	263	30

🟢 2025-10-31 14:01:08 UTC Build successful.
🟢 2025-10-31 14:01:32 UTC ydbd size 3.8 GiB changed* by -96 Bytes, which is <= 0 Bytes vs main: OK

ydbd size dash	main: a04e6ba	merge: ab8fd4f	diff	diff %
ydbd size	4 063 322 088 Bytes	4 063 321 992 Bytes	-96 Bytes	-0.000%
ydbd stripped size	1 508 300 152 Bytes	1 508 300 088 Bytes	-64 Bytes	-0.000%

^{*please be aware that the difference is based on comparing your commit and the last completed build from the post-commit, check comparation}