Diff: mbed-os/TESTS/mbed_drivers/echo/main.cpp

Revision:

0:8fdf9a60065b

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed-os/TESTS/mbed_drivers/echo/main.cpp	Wed Oct 10 00:33:53 2018 +0000
@@ -0,0 +1,93 @@
+/*
+ * Copyright (c) 2013-2016, ARM Limited, All Rights Reserved
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may
+ * not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#include <stdio.h>
+#include <string.h>
+#include "mbed.h"
+#include "greentea-client/test_env.h"
+#include "unity/unity.h"
+#include "utest/utest.h"
+
+#define PAYLOAD_LENGTH 36
+
+using namespace utest::v1;
+
+// Fill a buffer with a slice of the ASCII alphabet.
+void fill_buffer(char *buffer, unsigned int length, unsigned int index)
+{
+    unsigned int start = length * index;
+    for (int i = 0; i < length - 1; i++) {
+        buffer[i] = 'a' + ((start + i) % 26);
+    }
+    buffer[length - 1] = '\0';
+}
+
+// Echo server (echo payload to host)
+template<int N>
+void test_case_echo_server_x()
+{
+    char _key[11] = {};
+    char _tx_value[PAYLOAD_LENGTH + 1] = {};
+    char _rx_value[PAYLOAD_LENGTH + 1] = {};
+    const int echo_count = N;
+    const char _echo_count_key_const[] = "echo_count";
+    const char _echo_key_const[] = "echo";
+    int expected_key = 1;
+
+    // Send up the echo count
+    greentea_send_kv(_echo_count_key_const, echo_count);
+    // Handshake with host
+    do {
+        greentea_parse_kv(_key, _rx_value, sizeof(_key), sizeof(_rx_value));
+        // Ensure the key received is "echo_count" and not some old data
+        expected_key = strcmp(_echo_count_key_const, _key);
+    } while (expected_key);
+    TEST_ASSERT_EQUAL_INT(echo_count, atoi(_rx_value));
+
+    for (int i = 0; i < echo_count; ++i) {
+        fill_buffer(_tx_value, PAYLOAD_LENGTH, i);
+        greentea_send_kv(_echo_key_const, _tx_value);
+        do {
+            greentea_parse_kv(_key, _rx_value, sizeof(_key), sizeof(_rx_value));
+            // Ensure the key received is "echo" and not some old data
+            expected_key = strcmp(_echo_key_const, _key);
+        } while (expected_key);
+        TEST_ASSERT(strncmp(_tx_value, _rx_value, PAYLOAD_LENGTH) == 0);
+    }
+}
+
+utest::v1::status_t greentea_failure_handler(const Case *const source, const failure_t reason)
+{
+    greentea_case_failure_abort_handler(source, reason);
+    return STATUS_CONTINUE;
+}
+
+Case cases[] = {
+    Case("Echo server: x16", test_case_echo_server_x<16>, greentea_failure_handler),
+};
+
+utest::v1::status_t greentea_test_setup(const size_t number_of_cases)
+{
+    GREENTEA_SETUP(30, "device_echo");
+    return greentea_test_setup_handler(number_of_cases);
+}
+
+Specification specification(greentea_test_setup, cases, greentea_test_teardown_handler);
+
+int main()
+{
+    Harness::run(specification);
+}