Zephyr ztest

Overview

Zephyr has extensive documentation on its ztest and "twister" framework. As an aside however, to understand a pattern "Arrange, Act, Assert" test organization see the Zephyr 3.7.0 source file ``zephyrtests/net/lib/lwm2m/block_transfer/src/main.c``.

Topic - Ztest suite macro

Macro ZTEST_SUITE() described at https://docs.zephyrproject.org/3.7.0/develop/test/ztest.html#c.ZTEST_SUITE. The signature of this function like macro is:

ZTEST_SUITE(SUITE_NAME, PREDICATE, setup_fn, before_fn, after_fn, teardown_fn)

Topic - example tests

https://github.com/zephyrproject-rtos/zephyr/tree/main/tests/application_development/code_relocation

Topic - zexpect function like macros

The following Zephyr ztest macros were obtained by pattern matching over Zephyr 3.7.0 tests branch.

zexpect_equal

zexpect_not_equal
zexpect_true
zexpect_false
zexpect_ok|not_ok
is_null
not_null

zexpect_within

zexpect_between_inclusive
zexpect_str_equal(s1, s2);

zexpect_call_count

2025-12-22 lunes

Zephyr and use of hardware emulators

• https://mind.be/blog/using-emulators-and-fake-devices-in-zephyr/