// Read the records and verify the consistency.
void readRecords (RandomAccessFile& file,
int numRecords,
HeapBlock <Record> const& records,
std::int64_t seedValue)
{
using namespace UnitTestUtilities;
for (int i = 0; i < numRecords; ++i)
{
Record const& record (records [i]);
int const bytes = record.bytes;
Payload p1 (bytes);
Payload p2 (bytes);
p1.repeatableRandomFill (bytes, bytes, record.index + seedValue);
file.setPosition (record.offset);
Result result = file.read (p2.data.getData (), bytes);
expect (result.wasOk (), "Should be ok");
if (result.wasOk ())
{
p2.bytes = bytes;
expect (p1 == p2, "Should be equal");
}
}
}
int _tmain(int argc, _TCHAR* argv[])
{
char a = 't';
RandomAccessFile* rf = new RandomAccessFile("tst.bin");
rf->write(a);
RandomAccessFile* rf2 = new RandomAccessFile("tst.bin");
cout << rf2->read<char>(0) << endl;
}
// Perform the test at the given buffer size.
void testFile (int const numRecords)
{
using namespace UnitTestUtilities;
int const seedValue = 50;
std::stringstream ss;
ss << numRecords << " records";
testcase (ss.str());
// Calculate the path
File const path (File::createTempFile ("RandomAccessFile"));
// Create a predictable set of records
HeapBlock <Record> records (numRecords);
createRecords (records, numRecords, maxPayload, seedValue);
Result result (Result::ok ());
{
// Create the file
RandomAccessFile file;
result = file.open (path, RandomAccessFile::readWrite);
expect (result.wasOk (), "Should be ok");
if (result.wasOk ())
{
writeRecords (file, numRecords, records, seedValue);
readRecords (file, numRecords, records, seedValue);
repeatableShuffle (numRecords, records, seedValue);
readRecords (file, numRecords, records, seedValue);
}
}
if (result.wasOk ())
{
// Re-open the file in read only mode
RandomAccessFile file;
result = file.open (path, RandomAccessFile::readOnly);
expect (result.wasOk (), "Should be ok");
if (result.wasOk ())
{
readRecords (file, numRecords, records, seedValue);
}
}
}
// Write all the records to the file.
// The payload is pseudo-randomly generated.
void writeRecords (RandomAccessFile& file,
int numRecords,
HeapBlock <Record> const& records,
std::int64_t seedValue)
{
using namespace UnitTestUtilities;
for (int i = 0; i < numRecords; ++i)
{
Payload p (records [i].bytes);
p.repeatableRandomFill (records [i].bytes,
records [i].bytes,
records [i].index + seedValue);
file.setPosition (records [i].offset);
Result result = file.write (p.data.getData (), p.bytes);
expect (result.wasOk (), "Should be ok");
}
}