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tests: net: ocpp: Add test suit for OCPP lib
Add test suit for OCPP lib with one complete charging session with a random meter values. Signed-off-by: Saravanan Sekar <[email protected]>
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‎tests/net/lib/ocpp/CMakeLists.txt‎

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# SPDX-License-Identifier: Apache-2.0
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cmake_minimum_required(VERSION 3.20.0)
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find_package(Zephyr REQUIRED HINTS $ENV{ZEPHYR_BASE})
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project(ocpp_test)
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target_include_directories(app PRIVATE
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${ZEPHYR_BASE}/subsys/net/ip
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)
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FILE(GLOB app_sources src/*.c)
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target_sources(app PRIVATE ${app_sources})

‎tests/net/lib/ocpp/prj.conf‎

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# HTTP & Websocket
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CONFIG_HTTP_CLIENT=y
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CONFIG_WEBSOCKET_CLIENT=y
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# Networking config
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CONFIG_NETWORKING=y
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CONFIG_NET_IPV4=y
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CONFIG_NET_IPV6=n
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CONFIG_NET_TCP=y
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CONFIG_NET_ARP=y
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CONFIG_NET_UDP=y
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CONFIG_NET_SOCKETS=y
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CONFIG_NET_SOCKETS_POLL_MAX=4
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CONFIG_NET_L2_ETHERNET=y
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CONFIG_ETH_DRIVER=y
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CONFIG_LOG=y
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CONFIG_NET_LOG=y
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CONFIG_LOG_DEFAULT_LEVEL=3
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CONFIG_NET_DHCPV4=y
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# OCPP
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CONFIG_OCPP=y
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CONFIG_TEST_EXTRA_STACK_SIZE=2048
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CONFIG_MAIN_STACK_SIZE=2048
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CONFIG_HEAP_MEM_POOL_SIZE=15000
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CONFIG_JSON_LIBRARY=y
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CONFIG_PICOLIBC=y
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CONFIG_NET_TX_STACK_SIZE=2048
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CONFIG_NET_RX_STACK_SIZE=2048
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CONFIG_NET_PKT_RX_COUNT=28
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CONFIG_NET_BUF_RX_COUNT=60
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CONFIG_NET_MGMT=y
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CONFIG_NET_MGMT_EVENT=y
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CONFIG_ENTROPY_GENERATOR=y
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CONFIG_TEST_RANDOM_GENERATOR=y
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CONFIG_POSIX_API=y
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CONFIG_POSIX_CLOCK_SELECTION=y
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CONFIG_ZTEST=y

‎tests/net/lib/ocpp/src/main.c‎

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/*
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* Copyright (c) 2024 Linumiz
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include <zephyr/ztest.h>
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#include <zephyr/net/net_if.h>
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#include <zephyr/net/ocpp.h>
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#include <zephyr/random/random.h>
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static void test_ocpp_charge_cycle(ocpp_session_handle_t hndl)
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{
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int ret;
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int retry = 3;
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enum ocpp_auth_status status;
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const uint32_t timeout_ms = 500;
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while (retry--) {
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ret = ocpp_authorize(hndl, "ZepId00", &status, timeout_ms);
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TC_PRINT("auth req ret %d status %d", ret, status);
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k_sleep(K_SECONDS(1));
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if (!ret) {
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break;
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}
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}
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zassert_equal(ret, 0, "CP authorize fail %d");
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zassert_equal(status, OCPP_AUTH_ACCEPTED, "idtag not authorized");
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ret = ocpp_start_transaction(hndl, sys_rand32_get(), 1, timeout_ms);
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zassert_equal(ret, 0, "start transaction fail");
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/* Active charging session */
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k_sleep(K_SECONDS(20));
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ret = ocpp_stop_transaction(hndl, sys_rand32_get(), timeout_ms);
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zassert_equal(ret, 0, "stop transaction fail");
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}
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static int test_ocpp_user_notify_cb(enum ocpp_notify_reason reason,
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union ocpp_io_value *io,
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void *user_data)
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{
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switch (reason) {
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case OCPP_USR_GET_METER_VALUE:
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if (OCPP_OMM_ACTIVE_ENERGY_TO_EV == io->meter_val.mes) {
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snprintf(io->meter_val.val, CISTR50, "%u",
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sys_rand32_get());
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TC_PRINT("mtr reading val %s con %d",
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io->meter_val.val,
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io->meter_val.id_con);
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return 0;
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}
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break;
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case OCPP_USR_START_CHARGING:
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TC_PRINT("start charging idtag %s connector %d\n",
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io->start_charge.idtag,
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io->stop_charge.id_con);
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return 0;
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case OCPP_USR_STOP_CHARGING:
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TC_PRINT("stop charging connector %d\n", io->stop_charge.id_con);
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return 0;
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case OCPP_USR_UNLOCK_CONNECTOR:
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TC_PRINT("unlock connector %d\n", io->unlock_con.id_con);
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return 0;
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}
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return -ENOTSUP;
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}
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int test_ocpp_init(void)
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{
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int ret;
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struct ocpp_cp_info cpi = { "basic", "zephyr", .num_of_con = 1 };
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struct ocpp_cs_info csi = { "122.165.245.213", /* ssh.linumiz.com */
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"/steve/websocket/CentralSystemService/zephyr",
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8180,
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AF_INET };
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net_dhcpv4_start(net_if_get_default());
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/* wait for device dhcp ip recive */
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k_sleep(K_SECONDS(3));
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ret = ocpp_init(&cpi,
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&csi,
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test_ocpp_user_notify_cb,
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NULL);
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if (ret) {
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TC_PRINT("ocpp init failed %d\n", ret);
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return ret;
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}
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return 0;
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}
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ZTEST_EXPECT_FAIL(net_ocpp, test_ocpp_chargepoint);
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ZTEST(net_ocpp, test_ocpp_chargepoint)
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{
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int ret;
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ocpp_session_handle_t hndl = NULL;
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ret = test_ocpp_init();
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zassert_equal(ret, 0, "ocpp init failed %d", ret);
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ret = ocpp_session_open(&hndl);
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zassert_equal(ret, 0, "session open failed %d", ret);
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k_sleep(K_SECONDS(2));
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test_ocpp_charge_cycle(hndl);
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ocpp_session_close(hndl);
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}
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ZTEST_SUITE(net_ocpp, NULL, NULL, NULL, NULL, NULL);

‎tests/net/lib/ocpp/testcase.yaml‎

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tests:
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net.ocpp:
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depends_on: netif
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platform_allow:
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- native_sim/native
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min_ram: 16
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tags:
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- net
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- ocpp

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