tests: subsys: fs: bm_zms: add native_sim board target

* Updates the ztest to include the native_sim board target.

* Fixes some configuration bugs in the test suite.

* Fixes a bug where `bm_zms_clear` was not waited on
  until completion.

* Refactor to wait for notifications.

* Other cleanups.

Signed-off-by: Mirko Covizzi <[email protected]>

Author: MirkoCovizzi

samples/Kconfig

@@ -8,7 +8,7 @@
 
 # All these samples shall run without multithreading
 config MULTITHREADING
-	default n if !UNITY
+	default n if (!UNITY && !(ZTEST && BOARD_NATIVE_SIM))
 
 # Software ISR table is not needed if multithreading is not used
 config GEN_SW_ISR_TABLE

subsys/fs/bm_zms/bm_zms.c

@@ -29,6 +29,10 @@
 
 LOG_MODULE_REGISTER(bm_zms, CONFIG_BM_ZMS_LOG_LEVEL);
 
+#if CONFIG_ZTEST && CONFIG_BOARD_NATIVE_SIM
+#define __ALIGN(x) __aligned(x)
+#endif
+
 static zms_op_t cur_op; /* Current bm_zms operation. */
 static zms_op_t *p_cur_op;
 static atomic_t cur_op_result = ATOMIC_INIT(0);

tests/subsys/fs/bm_zms/boards/native_sim.conf

@@ -0,0 +1,2 @@
+CONFIG_BM_STORAGE_BACKEND_NATIVE_SIM=y
+CONFIG_HEAP_MEM_POOL_SIZE=1024