tests: provide tests for trace module

tests/trace/Makefile

@@ -0,0 +1,14 @@
+# name of your application
+APPLICATION = trace
+include ../Makefile.tests_common
+
+USEMODULE += trace
+
+BOARD_WHITELIST := native
+
+include $(RIOTBASE)/Makefile.include
+
+test:
+# `testrunner` calls `make term` recursively, results in duplicated `TERMFLAGS`.
+# So clears `TERMFLAGS` before run.
+	TERMFLAGS= tests/01-run.py

tests/trace/main.c

@@ -0,0 +1,30 @@
+/*
+ * Copyright (C) 2016 Freie Universität Berlin
+ *
+ * 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       Tests od module.
+ *
+ * @author      Martine Lenders <mlenders@inf.fu-berlin.de>
+ *
+ * @}
+ */
+
+#include <stdio.h>
+
+#include "trace.h"
+
+int main(void)
+{
+    printf("TRACE_SIZE: %u\n", TRACE_SIZE);
+    trace_print();
+    return 0;
+}

tests/trace/tests/01-run.py

@@ -0,0 +1,26 @@
+#!/usr/bin/env python3
+
+# Copyright (C) 2016 Freie Universität Berlin
+#
+# 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 os
+import sys
+
+
+def testfunc(child):
+    child.expect(r"TRACE_SIZE: (\d+)")
+    trace_size = int(child.match.group(1))
+    for i in range(trace_size):
+        child.expect("0x[0-9a-f]{7,8}")
+
+    print("All tests successful")
+
+
+if __name__ == "__main__":
+    sys.path.append(os.path.join(os.environ['RIOTBASE'],
+                    'dist/tools/testrunner'))
+    import testrunner
+    sys.exit(testrunner.run(testfunc, timeout=1, echo=True, traceback=True))