From 6ddab08cdbec4713803fc6255eb44bd697642ef8 Mon Sep 17 00:00:00 2001
From: Federico Pellegrin <fede@evolware.org>
Date: Tue, 16 Oct 2018 09:39:01 +0200
Subject: [PATCH] tests/arduino: add automatic test for arduino module

---
 tests/sys_arduino/Makefile            |   5 ++
 tests/sys_arduino/arduino-test.sketch | 100 ++++++++++++++++++++++++++
 tests/sys_arduino/tests/01-run.py     |  32 +++++++++
 3 files changed, 137 insertions(+)
 create mode 100644 tests/sys_arduino/Makefile
 create mode 100644 tests/sys_arduino/arduino-test.sketch
 create mode 100755 tests/sys_arduino/tests/01-run.py

diff --git a/tests/sys_arduino/Makefile b/tests/sys_arduino/Makefile
new file mode 100644
index 0000000000..9178812e62
--- /dev/null
+++ b/tests/sys_arduino/Makefile
@@ -0,0 +1,5 @@
+include ../Makefile.tests_common
+
+USEMODULE += arduino
+
+include $(RIOTBASE)/Makefile.include
diff --git a/tests/sys_arduino/arduino-test.sketch b/tests/sys_arduino/arduino-test.sketch
new file mode 100644
index 0000000000..2c3d5e5a77
--- /dev/null
+++ b/tests/sys_arduino/arduino-test.sketch
@@ -0,0 +1,100 @@
+/*
+ * Copyright (C) 2018 Federico Pellegrin <fede@evolware.org>
+ *
+ * This file is subject to the terms and conditions of the GNU Lesser
+ * General Public License v2.1. See the file LICENSE in the top level
+ * directory for more details.
+ */
+
+/**
+ * @ingroup     tests
+ * @{
+ *
+ * @file
+ * @brief       Test application for arduino module
+ *
+ * @author      Federico Pellegrin <fede@evolware.org>
+ *
+ * @}
+ */
+
+#include <stdlib.h>
+#include <string.h>
+
+#ifdef STDIO_UART_BAUDRATE
+#define SERIAL_BAUDRATE STDIO_UART_BAUDRATE
+#else
+#define SERIAL_BAUDRATE 115200
+#endif
+
+/* Input buffer for receiving chars on the serial port */
+char buf[64];
+
+/* Counter of received chars in currently receiving line */
+int count = 0;
+
+void setup(void)
+{
+    Serial.begin(SERIAL_BAUDRATE);
+    Serial.println("Hello Arduino!");
+}
+
+void loop(void)
+{
+    /* Read chars if available and seek for CR or LF */
+    while (Serial.available() > 0) {
+        int tmp = Serial.read();
+        if (tmp == '\n' || tmp == '\r') {
+           buf[count] = 0;
+
+           if (count > 1) {
+                if (strncmp(buf, "echo", 4) == 0) {
+                    /* echo command just echoes back the input string */
+                    Serial.write("ECHO:");
+                    for (int i = 4; i < count; i++) {
+                        Serial.write(buf[i]);
+                    }
+                } else if (strncmp(buf, "numb", 4) == 0) {
+                    /* numb command prints input number in various formats */
+                    int numb=atoi(buf + 5);
+                    Serial.print(numb);
+                    Serial.print(" ");
+                    Serial.print(numb, DEC);
+                    Serial.print(" ");
+                    Serial.print(numb, HEX);
+                    Serial.print(" ");
+                    Serial.print(numb, OCT);
+                } else if (strncmp(buf, "time", 4) == 0) {
+                    /* time command tests printing time and sleeps  */
+                    unsigned long curtime = micros();
+                    unsigned long curtime2, curtime3;
+
+                    Serial.print((int) curtime);
+                    delay(36);
+                    Serial.print(" ");
+                    curtime2=micros();
+                    Serial.print((int) curtime2);
+                    delayMicroseconds(36000);
+                    Serial.print(" ");
+                    curtime3=micros();
+                    Serial.print((int) curtime3);
+
+                    /* test also that time is actually running */
+                    if ((curtime3 > curtime2) && (curtime2 > curtime)) {
+                        Serial.print(" OK END");
+                    } else {
+                        Serial.print(" ERR END");
+                    }
+                } else {
+                    Serial.write("UNK");
+                }
+                Serial.println("");
+            }
+            count = 0;
+        }
+        else {
+            buf[count++] = tmp;
+        }
+    }
+    delay(500);
+}
diff --git a/tests/sys_arduino/tests/01-run.py b/tests/sys_arduino/tests/01-run.py
new file mode 100755
index 0000000000..e9e200190c
--- /dev/null
+++ b/tests/sys_arduino/tests/01-run.py
@@ -0,0 +1,32 @@
+#!/usr/bin/env python3
+
+# Copyright (C) 2018 Federico Pellegrin <fede@evolware.org>
+#
+# This file is subject to the terms and conditions of the GNU Lesser
+# General Public License v2.1. See the file LICENSE in the top level
+# directory for more details.
+
+import sys
+from testrunner import run
+
+
+def testfunc(child):
+    # 1 Basic read+write test on serial with error command
+    child.sendline("wrang")
+    child.expect_exact("UNK")
+
+    # 2 Test serial echo
+    child.sendline("echo quite long string echoing on arduino module test")
+    child.expect("ECHO: quite long string echoing on arduino module test")
+
+    # 3 Test on various print base conversions
+    child.sendline("numb 4242")
+    child.expect_exact("4242 4242 1092 10222")
+
+    # 4 Test if time is running and being printed
+    child.sendline("time")
+    child.expect("OK END")
+
+
+if __name__ == "__main__":
+    sys.exit(run(testfunc))