tests: posix: Add test with both pthread and newlib enabled

This commit adds a test case that reproduces sdk-ng#45.

Signed-off-by: Vincent Wan <vincent.wan@linaro.org>

tests/posix/newlib/CMakeLists.txt

@@ -0,0 +1,8 @@
+cmake_minimum_required(VERSION 3.13.1)
+include($ENV{ZEPHYR_BASE}/cmake/app/boilerplate.cmake NO_POLICY_SCOPE)
+project(posix_newlib)
+
+target_include_directories(app PRIVATE $ENV{ZEPHYR_BASE}/include/)
+
+FILE(GLOB app_sources src/*.c)
+target_sources(app PRIVATE ${app_sources})

tests/posix/newlib/prj.conf

@@ -0,0 +1,6 @@
+CONFIG_NEWLIB_LIBC=y
+CONFIG_PTHREAD_IPC=y
+CONFIG_POSIX_API=y
+CONFIG_MAX_PTHREAD_COUNT=20
+CONFIG_ZTEST=y
+CONFIG_MAIN_STACK_SIZE=4096

tests/posix/newlib/src/main.c

@@ -0,0 +1,17 @@
+/*
+ * Copyright (c) 2019 Linaro Limited
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#include <ztest.h>
+
+extern void test_posix_newlib(void);
+
+void test_main(void)
+{
+	ztest_test_suite(posix_newlib_test,
+			ztest_unit_test(test_posix_newlib)
+			);
+	ztest_run_test_suite(posix_newlib_test);
+}

tests/posix/newlib/src/test.c

@@ -0,0 +1,40 @@
+/*
+ * Copyright (c) 2019 Linaro Limited
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#include <ztest.h>
+#include <stdlib.h>
+#include <posix/pthread.h>
+
+static int test(void)
+{
+	int *res = NULL;
+	int ret;
+	pthread_attr_t attr;
+
+	/* Using something from POSIX */
+	ret = pthread_attr_init(&attr);
+
+	/* Using something from libc */
+	res = malloc(10);
+
+	if ((res != NULL) && (ret == 0)) {
+		TC_PRINT("\nhello world!\n");
+	} else {
+		return TC_FAIL;
+	}
+
+	free(res);
+
+	/* We have gotten this far, so the build succeeded with both
+	 * POSIX and newlib enabled.
+	 */
+	return TC_PASS;
+}
+
+void test_posix_newlib(void)
+{
+	zassert_true(test() == TC_PASS, NULL);
+}

tests/posix/newlib/testcase.yaml

@@ -0,0 +1,6 @@
+tests:
+  portability.posix:
+    tags: posix
+    arch_exclude: posix
+    filter: TOOLCHAIN_HAS_NEWLIB == 1
+    min_ram: 64