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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: test5.c
**
** Purpose: Tests the PAL implementation of the SetEndOfFile function.
** Test attempts to read the number of characters up to
** the EOF pointer, which was specified.
**
**
**===================================================================*/
#include <palsuite.h>
int __cdecl main(int argc, char *argv[])
{
HANDLE hFile = NULL;
DWORD dwBytesWritten;
DWORD retCode;
BOOL bRc = FALSE;
char szBuffer[256];
DWORD dwBytesRead = 0;
char testFile[] = "testfile.tmp";
char testString[] = "watch what happens";
LONG shiftAmount = 10;
/* Initialize the PAL.
*/
if (0 != PAL_Initialize(argc,argv))
{
return FAIL;
}
/* Initialize the buffer.
*/
memset(szBuffer, 0, 256);
/* Create a file to test with.
*/
hFile = CreateFile(testFile,
GENERIC_WRITE|GENERIC_READ,
FILE_SHARE_WRITE|FILE_SHARE_READ,
NULL,
CREATE_ALWAYS,
FILE_ATTRIBUTE_NORMAL,
NULL);
if(hFile == INVALID_HANDLE_VALUE)
{
Fail("ERROR:%u: Unable to create file \"%s\".\n",
GetLastError(),
testFile);
}
/* Write to the File handle.
*/
bRc = WriteFile(hFile,
testString,
strlen(testString),
&dwBytesWritten,
NULL);
if (bRc == FALSE)
{
Trace("ERROR:%u: Unable to write to file handle "
"hFile=0x%lx\n",
GetLastError(),
hFile);
if (!CloseHandle(hFile))
{
Fail("ERROR:%u%: Unable to close handle 0x%lx.\n",
GetLastError(),
hFile);
}
Fail("");
}
/* Set the file pointer to shiftAmount bytes from the front of the file
*/
retCode = SetFilePointer(hFile, shiftAmount, NULL, FILE_BEGIN);
if(retCode == INVALID_SET_FILE_POINTER)
{
Trace("ERROR:%u: Unable to set the file pointer to %d\n",
GetLastError(),
shiftAmount);
if (!CloseHandle(hFile))
{
Fail("ERROR:%u%: Unable to close handle 0x%lx.\n",
GetLastError(),
hFile);
}
Fail("");
}
/* set the end of file pointer to 'shiftAmount' */
bRc = SetEndOfFile(hFile);
if (bRc == FALSE)
{
Trace("ERROR:%u: Unable to set file pointer of file handle 0x%lx.\n",
GetLastError(),
hFile);
if (!CloseHandle(hFile))
{
Fail("ERROR:%u%: Unable to close handle 0x%lx.\n",
GetLastError(),
hFile);
}
Fail("");
}
/* Set the file pointer to 10 bytes from the front of the file
*/
retCode = SetFilePointer(hFile, (LONG)NULL, NULL, FILE_BEGIN);
if(retCode == INVALID_SET_FILE_POINTER)
{
Trace("ERROR:%u: Unable to set the file pointer to %d\n",
GetLastError(),
FILE_BEGIN);
if (!CloseHandle(hFile))
{
Fail("ERROR:%u%: Unable to close handle 0x%lx.\n",
GetLastError(),
hFile);
}
Fail("");
}
/* Attempt to read the entire string, 'testString' from a file
* that has it's end of pointer set at shiftAmount;
*/
bRc = ReadFile(hFile,
szBuffer,
strlen(testString),
&dwBytesRead,
NULL);
if (bRc == FALSE)
{
Trace("ERROR:%u: Unable to read from file handle 0x%lx.\n",
GetLastError(),
hFile);
if (!CloseHandle(hFile))
{
Fail("ERROR:%u%: Unable to close handle 0x%lx.\n",
GetLastError(),
hFile);
}
Fail("");
}
/* Confirm the number of bytes read with that requested.
*/
if (dwBytesRead != shiftAmount)
{
Trace("ERROR: The number of bytes read \"%d\" is not equal to the "
"number that should have been written \"%d\".\n",
dwBytesRead,
shiftAmount);
if (!CloseHandle(hFile))
{
Fail("ERROR:%u%: Unable to close handle 0x%lx.\n",
GetLastError(),
hFile);
}
Fail("");
}
bRc = CloseHandle(hFile);
if(!bRc)
{
Fail("ERROR:%u CloseHandle failed to close the handle\n",
GetLastError());
}
/* Terminate the PAL.
*/
PAL_Terminate();
return PASS;
}
|
