tests: net: Add test for Sockets API UDP socket/bind/connect/send/recv

Signed-off-by: Paul Sokolovsky <paul.sokolovsky@linaro.org>

tests/net/socket/udp/Makefile

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+#
+# Copyright (c) 2017 Linaro Limited
+#
+# SPDX-License-Identifier: Apache-2.0
+#
+
+BOARD ?= qemu_x86
+CONF_FILE ?= prj.conf
+
+include $(ZEPHYR_BASE)/Makefile.inc
+include $(ZEPHYR_BASE)/samples/net/common/Makefile.ipstack

tests/net/socket/udp/prj.conf

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+# General config
+CONFIG_NEWLIB_LIBC=y
+
+# Networking config
+CONFIG_NETWORKING=y
+CONFIG_NET_IPV4=y
+CONFIG_NET_IPV6=n
+CONFIG_NET_TCP=y
+CONFIG_NET_SOCKETS=y
+CONFIG_NET_SOCKETS_POSIX_NAMES=y
+
+# Network driver config
+CONFIG_NET_SLIP_TAP=y
+CONFIG_TEST_RANDOM_GENERATOR=y
+
+# Network address config
+#CONFIG_NET_APP_SETTINGS=y
+#CONFIG_NET_APP_MY_IPV4_ADDR="192.0.2.1"
+#CONFIG_NET_APP_PEER_IPV4_ADDR="192.0.2.2"
+
+# Network debug config
+#CONFIG_NET_LOG=y
+#CONFIG_NET_DEBUG_SOCKETS=y
+#CONFIG_SYS_LOG_NET_LEVEL=4
+
+CONFIG_ZTEST=y

tests/net/socket/udp/src/Makefile

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+obj-y += main.o
+ccflags-y += -I${ZEPHYR_BASE}/tests/include
+ccflags-y += -I${ZEPHYR_BASE}/tests/ztest/include

tests/net/socket/udp/src/main.c

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+/*
+ * Copyright (c) 2017 Linaro Limited
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#include <stdio.h>
+#include <ztest_assert.h>
+
+#include <net/socket.h>
+#include <net/net_if.h>
+
+#define BUF_AND_SIZE(buf) buf, sizeof(buf) - 1
+#define STRLEN(buf) (sizeof(buf) - 1)
+
+#define TEST_STR_SMALL "test"
+
+void test_send_recv_2_sock(void)
+{
+	int sock1, sock2;
+	struct sockaddr_in bind_addr, conn_addr;
+	char buf[10];
+	int len, cmp;
+
+	sock1 = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
+	sock2 = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
+
+	bind_addr.sin_family = AF_INET;
+	bind_addr.sin_addr.s_addr = htonl(INADDR_ANY);
+	bind_addr.sin_port = htons(55555);
+	bind(sock1, (struct sockaddr *)&bind_addr, sizeof(bind_addr));
+
+	conn_addr.sin_family = AF_INET;
+	conn_addr.sin_addr.s_addr = htonl(0xc0000201);
+	conn_addr.sin_port = htons(55555);
+	connect(sock2, (struct sockaddr *)&conn_addr, sizeof(conn_addr));
+
+	send(sock2, BUF_AND_SIZE(TEST_STR_SMALL), 0);
+
+	len = recv(sock1, buf, sizeof(buf), 0);
+	zassert_equal(len, 4, "Invalid recv len");
+	cmp = memcmp(buf, TEST_STR_SMALL, STRLEN(TEST_STR_SMALL));
+	zassert_equal(cmp, 0, "Invalid recv data");
+}
+
+void test_main(void)
+{
+	zassert_not_null(net_if_get_default(), "No default netif");
+	static struct in_addr in4addr_my = { { {192, 0, 2, 1} } };
+
+	net_if_ipv4_addr_add(net_if_get_default(), &in4addr_my,
+			     NET_ADDR_MANUAL, 0);
+
+	ztest_test_suite(socket_udp,
+		ztest_unit_test(test_send_recv_2_sock)
+	);
+
+	ztest_run_test_suite(socket_udp);
+}

tests/net/socket/udp/testcase.ini

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+[test]
+tags = net
+build_only = true
+arch_whitelist = x86
+platform_exclude = quark_d2000_crb