staging: comedi: tests: add unittest framework for comedi (040e9e4d) · Commits · 戴 / test

drivers/staging/comedi/drivers/Makefile

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		@@ -145,3 +145,4 @@ obj-$(CONFIG_COMEDI_8255_SA) += 8255.o
		obj-$(CONFIG_COMEDI_AMPLC_DIO200) += amplc_dio200_common.o
		obj-$(CONFIG_COMEDI_AMPLC_PC236) += amplc_pc236_common.o
		obj-$(CONFIG_COMEDI_DAS08) += das08.o
		obj-$(CONFIG_COMEDI_TESTS) += tests/

drivers/staging/comedi/drivers/tests/Makefile

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		# SPDX-License-Identifier: GPL-2.0
		# Makefile for comedi drivers unit tests
		#
		ccflags-$(CONFIG_COMEDI_DEBUG) := -DDEBUG

		obj-$(CONFIG_COMEDI_TESTS) += example_test.o

drivers/staging/comedi/drivers/tests/example_test.c

0 → 100644

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		// SPDX-License-Identifier: GPL-2.0+
		/* vim: set ts=8 sw=8 noet tw=80 nowrap: */
		/*
		* comedi/drivers/tests/example_test.c
		* Example set of unit tests.
		*
		* COMEDI - Linux Control and Measurement Device Interface
		* Copyright (C) 2016 Spencer E. Olson <olsonse@umich.edu>
		*
		* This program is free software; you can redistribute it and/or modify
		* it under the terms of the GNU General Public License as published by
		* the Free Software Foundation; either version 2 of the License, or
		* (at your option) any later version.
		*
		* This program is distributed in the hope that it will be useful,
		* but WITHOUT ANY WARRANTY; without even the implied warranty of
		* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
		* GNU General Public License for more details.
		*/

		#include <linux/module.h>

		#include "unittest.h"

		/* * BEGIN fake board data * */
		struct comedi_device {
		const char *board_name;
		int item;
		};

		static struct comedi_device dev = {
		.board_name = "fake_device",
		};

		/* * END fake board data * */

		/* * BEGIN fake data init * */
		void init_fake(void)
		{
		dev.item = 10;
		}

		/* * END fake data init * */

		void test0(void)
		{
		init_fake();
		unittest(dev.item != 11, "negative result\n");
		unittest(dev.item == 10, "positive result\n");
		}

		/* ** BEGIN simple module entry/exit functions ** */
		static int __init unittest_enter(void)
		{
		const unittest_fptr unit_tests[] = {
		(unittest_fptr)test0,
		NULL,
		};

		exec_unittests("example", unit_tests);
		return 0;
		}

		static void __exit unittest_exit(void) { }

		module_init(unittest_enter);
		module_exit(unittest_exit);

		MODULE_AUTHOR("Spencer Olson <olsonse@umich.edu>");
		MODULE_DESCRIPTION("Comedi unit-tests example");
		MODULE_LICENSE("GPL");
		/* ** END simple module entry/exit functions ** */

drivers/staging/comedi/drivers/tests/unittest.h

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		/* SPDX-License-Identifier: GPL-2.0+ */
		/* vim: set ts=8 sw=8 noet tw=80 nowrap: */
		/*
		* comedi/drivers/tests/unittest.h
		* Simple framework for unittests for comedi drivers.
		*
		* COMEDI - Linux Control and Measurement Device Interface
		* Copyright (C) 2016 Spencer E. Olson <olsonse@umich.edu>
		* based of parts of drivers/of/unittest.c
		*
		* This program is free software; you can redistribute it and/or modify
		* it under the terms of the GNU General Public License as published by
		* the Free Software Foundation; either version 2 of the License, or
		* (at your option) any later version.
		*
		* This program is distributed in the hope that it will be useful,
		* but WITHOUT ANY WARRANTY; without even the implied warranty of
		* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
		* GNU General Public License for more details.
		*/

		#ifndef _COMEDI_DRIVERS_TESTS_UNITTEST_H
		#define _COMEDI_DRIVERS_TESTS_UNITTEST_H

		static struct unittest_results {
		int passed;
		int failed;
		} unittest_results;

		typedef void (unittest_fptr)(void);

		#define unittest(result, fmt, ...) ({ \
		bool failed = !(result); \
		if (failed) { \
		++unittest_results.failed; \
		pr_err("FAIL %s():%i " fmt, __func__, __LINE__, \
		##__VA_ARGS__); \
		} else { \
		++unittest_results.passed; \
		pr_debug("pass %s():%i " fmt, __func__, __LINE__, \
		##__VA_ARGS__); \
		} \
		failed; \
		})

		/**
		* Execute an array of unit tests.
		* @name: Name of set of unit tests--will be shown at INFO log level.
		* @unit_tests: A null-terminated list of unit tests to execute.
		*/
		static inline void exec_unittests(const char *name,
		const unittest_fptr *unit_tests)
		{
		pr_info("begin comedi:\"%s\" unittests\n", name);

		for (; (*unit_tests) != NULL; ++unit_tests)
		(*unit_tests)();

		pr_info("end of comedi:\"%s\" unittests - %i passed, %i failed\n", name,
		unittest_results.passed, unittest_results.failed);
		}

		#endif /* _COMEDI_DRIVERS_TESTS_UNITTEST_H */

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