logging: fix logging.async test

Test has code to test conditions where CONFIG_LOG_PROCESS_THREAD=y
but this option was not enabled in any of the tests. This code was
using removed APIs and did not build anymore. This change enables
the log thread for the logging.async and fixes the tests.

Signed-off-by: Corey Wharton <xodus7@cwharton.com>

tests/subsys/logging/log_core_additional/log_thread.conf

@@ -0,0 +1,18 @@
+CONFIG_MAIN_THREAD_PRIORITY=5
+CONFIG_ZTEST=y
+CONFIG_TEST_LOGGING_DEFAULTS=n
+CONFIG_LOG=y
+CONFIG_LOG_OUTPUT=y
+CONFIG_LOG_PRINTK=n
+CONFIG_LOG_SPEED=y
+CONFIG_LOG_BUFFER_SIZE=1024
+CONFIG_CBPRINTF_FP_SUPPORT=y
+CONFIG_CBPRINTF_LIBC_SUBSTS=y
+CONFIG_ZTEST_STACK_SIZE=4096
+CONFIG_LOG_MODE_DEFERRED=y
+CONFIG_LOG_PROCESS_THREAD_SLEEP_MS=200
+CONFIG_MAIN_STACK_SIZE=4096
+
+CONFIG_MPSC_CLEAR_ALLOCATED=y
+CONFIG_LOG_BACKEND_UART=y
+CONFIG_THREAD_MONITOR=y

tests/subsys/logging/log_core_additional/src/log_test.c

@@ -409,8 +409,6 @@ ZTEST(test_log_core_additional, test_multiple_backends)
 #ifdef CONFIG_LOG_PROCESS_THREAD
 ZTEST(test_log_core_additional, test_log_thread)
 {
-	uint32_t slabs_free, used, max;
-
 	TC_PRINT("Logging buffer is configured to %d bytes\n",
 		 CONFIG_LOG_BUFFER_SIZE);
 
@@ -420,25 +418,19 @@ ZTEST(test_log_core_additional, test_log_thread)
 
 	log_setup(false);
 
-	slabs_free = log_msg_mem_get_free();
-	used = log_msg_mem_get_used();
-	max = log_msg_mem_get_max_used();
-	zassert_equal(used, 0);
+	zassert_false(log_data_pending());
 
 	LOG_INF("log info to log thread");
 	LOG_WRN("log warning to log thread");
 	LOG_ERR("log error to log thread");
 
-	zassert_equal(log_msg_mem_get_used(), 3);
-	zassert_equal(log_msg_mem_get_free(), slabs_free - 3);
-	zassert_equal(log_msg_mem_get_max_used(), max);
+	zassert_true(log_data_pending());
 
-	TC_PRINT("after log, free: %d, used: %d, max: %d\n", slabs_free, used, max);
 	/* wait 2 seconds for logging thread to handle this log message*/
 	k_sleep(K_MSEC(2000));
 	zassert_equal(3, backend1_cb.counter,
 		      "Unexpected amount of messages received by the backend.");
-	zassert_equal(log_msg_mem_get_used(), 0);
+	zassert_false(log_data_pending());
 }
 #else
 ZTEST(test_log_core_additional, test_log_thread)
@@ -491,7 +483,9 @@ ZTEST(test_log_core_additional, test_log_msg_create)
 
 		Z_LOG_MSG_CREATE(!IS_ENABLED(CONFIG_USERSPACE), mode,
 			  Z_LOG_LOCAL_DOMAIN_ID, NULL,
-			  LOG_LEVEL_INTERNAL_RAW_STRING, NULL, 0, TEST_MESSAGE);
+			  LOG_LEVEL_INF, NULL, 0, TEST_MESSAGE);
+
+		backend1_cb.total_logs = 3;
 
 		while (log_test_process()) {
 		}

tests/subsys/logging/log_core_additional/testcase.yaml

@@ -9,3 +9,8 @@ tests:
     extra_args: CONF_FILE=log_sync.conf
     integration_platforms:
       - native_sim
+  logging.thread:
+    tags: logging
+    extra_args: CONF_FILE=log_thread.conf
+    integration_platforms:
+      - native_sim