tests: add test that shows sequence of received messages

tests/test_thread_msg_seq/Makefile

@@ -0,0 +1,4 @@
+export PROJECT = test_thread_msg_seq
+include ../Makefile.tests_common
+
+include $(RIOTBASE)/Makefile.include

tests/test_thread_msg_seq/main.c

@@ -0,0 +1,65 @@
+/*
+ * Copyright (C) 2013 Christian Mehlis <mehlis@inf.fu-berlin.de>
+ *           (C) 2014 Kaspar Schleiser <kaspar@schleiser.de>
+ *
+ * This file is subject to the terms and conditions of the GNU Lesser General
+ * Public License. See the file LICENSE in the top level directory for more
+ * details.
+ */
+
+/**
+ * @ingroup tests
+ * @{
+ *
+ * @file
+ * @brief Thread test application
+ *
+ * @author Christian Mehlis <mehlis@inf.fu-berlin.de>
+ * @author Kaspar Schleiser <kaspar@schleiser.de>
+ *
+ * @}
+ */
+
+#include <stdio.h>
+
+#include "thread.h"
+#include "msg.h"
+
+char t1_stack[KERNEL_CONF_STACKSIZE_PRINTF];
+char t2_stack[KERNEL_CONF_STACKSIZE_PRINTF];
+char t3_stack[KERNEL_CONF_STACKSIZE_PRINTF];
+
+uint16_t p1, p2, p3;
+
+void sub_thread(void)
+{
+    int pid = thread_getpid();
+    printf("THREAD %s (pid:%i) start\n", thread_getname(pid), pid);
+
+    msg_t msg;
+    
+    msg.content.ptr = (char*)thread_getname(pid);
+
+    msg_send(&msg, 1, 1);
+
+    printf("THREAD %s (pid:%i) end.\n", thread_getname(pid), pid);
+}
+
+
+int main(void)
+{
+    msg_t msg;
+
+    p1 = thread_create(t1_stack, KERNEL_CONF_STACKSIZE_PRINTF, PRIORITY_MAIN - 1,
+                       CREATE_WOUT_YIELD | CREATE_STACKTEST, sub_thread, "nr1");
+    p2 = thread_create(t2_stack, KERNEL_CONF_STACKSIZE_PRINTF, PRIORITY_MAIN - 1,
+                       CREATE_WOUT_YIELD | CREATE_STACKTEST, sub_thread, "nr2");
+    p3 = thread_create(t3_stack, KERNEL_CONF_STACKSIZE_PRINTF, PRIORITY_MAIN - 1,
+                       CREATE_WOUT_YIELD | CREATE_STACKTEST, sub_thread, "nr3");
+
+    puts("THREADS CREATED\n");
+    for(int i = 0; i < 3; i++) {
+        msg_receive(&msg);
+        printf("Got msg from pid %i: \"%s\"\n", msg.sender_pid, msg.content.ptr);
+    }
+}