tests: posix: common: separate posix xsi system logging to standalone test

posix.common contains testsuites that can be separated into smaller
groups of tests. This change moves syslog into a singular
testsuite at tests/posix/xsi_system_logging app directory.

Signed-off-by: Marvin Ouma <pancakesdeath@protonmail.com>

tests/posix/xsi_system_logging/CMakeLists.txt

@@ -0,0 +1,9 @@
+# SPDX-License-Identifier: Apache-2.0
+
+cmake_minimum_required(VERSION 3.20.0)
+find_package(Zephyr REQUIRED HINTS $ENV{ZEPHYR_BASE})
+project(xsi_system_logging)
+
+target_sources(app PRIVATE src/main.c)
+
+target_compile_options(app PRIVATE -U_POSIX_C_SOURCE -D_POSIX_C_SOURCE=200809L)

tests/posix/xsi_system_logging/prj.conf

@@ -0,0 +1,5 @@
+CONFIG_POSIX_API=y
+CONFIG_ZTEST=y
+
+CONFIG_POSIX_AEP_CHOICE_BASE=y
+CONFIG_XSI_SYSTEM_LOGGING=y

tests/posix/xsi_system_logging/src/main.c

@@ -9,11 +9,11 @@
 #include <zephyr/posix/unistd.h>
 #include <zephyr/ztest.h>
 
-#define N_PRIOS 8
+#define N_PRIOS  8
 /* avoid clashing with Zephyr's LOG_ERR() */
 #define _LOG_ERR 3
 
-ZTEST(syslog, test_syslog)
+ZTEST(xsi_system_logging, test_syslog)
 {
 	int prios[N_PRIOS] = {
 		LOG_EMERG,   LOG_ALERT,  LOG_CRIT, _LOG_ERR,
@@ -33,4 +33,4 @@ ZTEST(syslog, test_syslog)
 	usleep(100000);
 }
 
-ZTEST_SUITE(syslog, NULL, NULL, NULL, NULL, NULL);
+ZTEST_SUITE(xsi_system_logging, NULL, NULL, NULL, NULL, NULL);

tests/posix/xsi_system_logging/testcase.yaml

@@ -0,0 +1,24 @@
+common:
+  filter: not CONFIG_NATIVE_LIBC
+  tags:
+    - xsi.system.logging
+  # 1 tier0 platform per supported architecture
+  platform_key:
+    - arch
+    - simulation
+  min_flash: 64
+  min_ram: 32
+tests:
+  portability.xsi.system.logging: {}
+  portability.xsi.system.logging.minimal:
+    extra_configs:
+      - CONFIG_MINIMAL_LIBC=y
+  portability.xsi.system.logging.newlib:
+    filter: TOOLCHAIN_HAS_NEWLIB == 1
+    extra_configs:
+      - CONFIG_NEWLIB_LIBC=y
+  portability.xsi.system.logging.picolibc:
+    tags: picolibc
+    filter: CONFIG_PICOLIBC_SUPPORTED
+    extra_configs:
+      - CONFIG_PICOLIBC=y