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// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.
/*=====================================================================
**
** Source: FlushFileBuffers.c
**
** Purpose: Tests the PAL implementation of the FlushFileBuffers function
** This tests checks the return values of FlushFileBuffers -- once on an
** open handle and once on a closed handle.
**
** Depends:
** CreateFile
** WriteFile
** CloseHandle
** DeleteFileA
**
**
**===================================================================*/
#include <palsuite.h>
int __cdecl main(int argc, char **argv)
{
int TheReturn;
HANDLE TheFileHandle;
DWORD temp;
DWORD originalSize=10000;
DWORD finalSize=10000;
const char* fileName="the_file";
/* 1 2 3 4*/
char * SomeText = "1234567890123456789012345678901234567890";
if (0 != PAL_Initialize(argc,argv))
{
return FAIL;
}
/* Open the file to get a HANDLE */
TheFileHandle =
CreateFile(
fileName,
GENERIC_READ|GENERIC_WRITE,
FILE_SHARE_READ,
NULL,
OPEN_ALWAYS,
FILE_ATTRIBUTE_NORMAL,
NULL);
if(TheFileHandle == INVALID_HANDLE_VALUE)
{
Fail("ERROR: CreateFile failed. Test depends on this function.");
}
/* get the file size */
originalSize = GetFileSize (TheFileHandle, NULL) ;
if(originalSize == INVALID_FILE_SIZE)
{
Fail("ERROR: call to GetFileSize faild with error "
"The GetLastError is %d.",GetLastError());
}
/* Write something too the HANDLE. Should be buffered */
TheReturn = WriteFile(TheFileHandle,
SomeText,
strlen(SomeText),
&temp,
NULL);
if(TheReturn == 0)
{
Fail("ERROR: WriteFile failed. Test depends on this function.");
}
/* Test to see that FlushFileBuffers returns a success value */
TheReturn = FlushFileBuffers(TheFileHandle);
if(TheReturn == 0)
{
Fail("ERROR: The FlushFileBuffers function returned 0, which "
"indicates failure, when trying to flush a valid HANDLE. "
"The GetLastError is %d.",GetLastError());
}
/* test if flush modified the file */
finalSize = GetFileSize (TheFileHandle, NULL) ;
if(finalSize==INVALID_FILE_SIZE)
{
Fail("ERROR: call to GetFileSize faild with error "
"The GetLastError is %d.",GetLastError());
}
if(finalSize!=(originalSize+strlen(SomeText)))
{
Fail("ERROR: FlushFileBuffers failed. data was not written to the file");
}
/* Close the Handle */
TheReturn = CloseHandle(TheFileHandle);
if(TheReturn == 0)
{
Fail("ERROR: CloseHandle failed. This function depends "
"upon it.");
}
/* Test to see that FlushFileBuffers returns a failure value */
TheReturn = FlushFileBuffers(TheFileHandle);
if(TheReturn != 0)
{
Fail("ERROR: The FlushFileBuffers function returned non-zero, "
"which indicates success, when trying to flush an invalid "
"HANDLE.");
}
/* make sure file does not exist */
if(DeleteFileA(fileName)== 0 )
{
Fail("ERROR: call to DeleteFileA faild with error "
"The GetLastError is %d.",GetLastError());
}
PAL_Terminate();
return PASS;
}
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