mirror of
https://github.com/tianocore/edk2
synced 2026-08-27 00:23:19 -04:00
d47954ceb4
The SampleGoogleTestGenerateException GoogleTest sample previously generated a CPU exception by performing an integer divide by zero. That mechanism is X86-specific: the AArch64 architecture defines SDIV/UDIV by zero to return zero rather than raising a synchronous abort, so the sample produced no exception when built and run on AArch64 hosts and the test failed due to the test assert instead of triggering an exception through the framework. This change replaces the divide-by-zero with a NULL pointer write performed through a small volatile helper, which is expected to work on all host systems. The MSVC '/wd4723' build option is no longer needed because it was added to silence the divide-by-zero compile-time warning. Signed-off-by: Kun Qin <kun.qin@microsoft.com>
66 lines
1.8 KiB
C++
66 lines
1.8 KiB
C++
/** @file
|
|
This is a sample to demonstrates the use of GoogleTest that supports host
|
|
execution environments for test case that generates an exception. For some
|
|
host-based environments, this is a fatal condition that terminates the unit
|
|
tests and no additional test cases are executed. On other environments, this
|
|
condition may be report a unit test failure and continue with additional unit
|
|
tests.
|
|
|
|
A NULL pointer write is used to generate the exception because it produces
|
|
a fatal CPU exception (translation/page fault) on every architecture
|
|
supported by EDK II host-based testing.
|
|
|
|
Copyright (c) 2024, Intel Corporation. All rights reserved.<BR>
|
|
SPDX-License-Identifier: BSD-2-Clause-Patent
|
|
**/
|
|
|
|
#include <Library/GoogleTestLib.h>
|
|
extern "C" {
|
|
#include <Uefi.h>
|
|
#include <Library/BaseLib.h>
|
|
#include <Library/DebugLib.h>
|
|
}
|
|
|
|
VOID
|
|
WriteByteWithNoParameterChecking (
|
|
VOID *Address,
|
|
UINT8 Value
|
|
)
|
|
{
|
|
//
|
|
// Perform a byte write to the supplied address with no validity check.
|
|
//
|
|
*(volatile UINT8 *)Address = Value;
|
|
}
|
|
|
|
/**
|
|
Sample unit test that generates an unexpected exception by writing to a
|
|
NULL pointer.
|
|
**/
|
|
TEST (ExceptionTest, GenerateExceptionExpectTestFail) {
|
|
UINT8 LocalByte;
|
|
|
|
LocalByte = 0;
|
|
|
|
//
|
|
// Assertion that passes without generating an exception
|
|
//
|
|
WriteByteWithNoParameterChecking (&LocalByte, 0xA5);
|
|
EXPECT_EQ (LocalByte, (UINT8)0xA5);
|
|
//
|
|
// Assertion that generates a NULL pointer access exception before the
|
|
// following EXPECT_EQ result is evaluated
|
|
//
|
|
WriteByteWithNoParameterChecking (NULL, 0xA5);
|
|
EXPECT_EQ (LocalByte, (UINT8)0xA5);
|
|
}
|
|
|
|
int
|
|
main (
|
|
int argc,
|
|
char *argv[]
|
|
)
|
|
{
|
|
testing::InitGoogleTest (&argc, argv);
|
|
return RUN_ALL_TESTS ();
|
|
}
|