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gpu: nvgpu: unit: add posix-bug unit

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The EXPECT_BUG construct was broken so this new unit will ensure
it does not happen again. It will also indirectly ensure that
BUG() works as intended.

JIRA NVGPU-3562

Change-Id: I09a11d616f37f8689e6f7c86840133410c5eb04e
Signed-off-by: Nicolas Benech <nbenech@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/2126873
GVS: Gerrit_Virtual_Submit
Reviewed-by: Alex Waterman <alexw@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
This commit is contained in:
Nicolas Benech
2019-05-28 20:12:13 -04:00
committed by mobile promotions
parent 9909fa53f9
commit ce3facb616
7 changed files with 188 additions and 5 deletions
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80
userspace/units/posix/bug/posix-bug.c Normal file
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/*
* Copyright (c) 2019, NVIDIA CORPORATION. All rights reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/
#include <stdlib.h>
#include <stdint.h>
#include <unit/io.h>
#include <unit/unit.h>
#include <nvgpu/bug.h>
#include <nvgpu/types.h>
/*
* Simple wrapper function to call BUG() or not. It was not strictly necessary
* to wrap the call to BUG() in a function but it better ressembles the way
* EXPECT_BUG is to be used in unit tests.
*/
static void bug_caller(struct unit_module *m, bool call)
{
if (call == true) {
unit_info(m, "Calling BUG()\n");
BUG();
} else {
unit_info(m, "Not calling BUG()\n");
}
}
/*
* Test to ensure the EXPECT_BUG construct works as intended by making sure it
* behaves properly when BUG is called or not.
* In the event that EXPECT_BUG is completely broken, the call to BUG() would
* cause the unit to crash and report a failure correctly.
*/
static int test_expect_bug(struct unit_module *m,
struct gk20a *g, void *args)
{
/* Make sure calls to BUG() are caught as intended. */
if (!EXPECT_BUG(bug_caller(m, true))) {
unit_err(m, "BUG() was not called but it was expected.\n");
return UNIT_FAIL;
} else {
unit_info(m, "BUG() was called as expected\n");
}
/* Make sure there are no false positives when BUG is not called. */
if (!EXPECT_BUG(bug_caller(m, false))) {
unit_info(m, "BUG() was not called as expected.\n");
} else {
unit_err(m, "BUG() was called but it was not expected.\n");
return UNIT_FAIL;
}
return UNIT_SUCCESS;
}
struct unit_module_test posix_bug_tests[] = {
UNIT_TEST(expect_bug, test_expect_bug, NULL, 0),
};
UNIT_MODULE(posix_bug, posix_bug_tests, UNIT_PRIO_POSIX_TEST);