public void BytesNullTest()
{
// Setup: Create a mock file stream wrapper
using (MemoryStream stream = new MemoryStream(new byte[8192]))
{
// If:
// ... I write null as a string to the writer
using (ServiceBufferFileStreamWriter writer = new ServiceBufferFileStreamWriter(stream, new QueryExecutionSettings()))
{
// Then:
// ... I should get an argument null exception
Assert.Throws <ArgumentNullException>(() => writer.WriteBytes(null));
}
}
}
private static string VerifyReadWrite <T>(int valueLength, T value,
Func <ServiceBufferFileStreamWriter, T, int> writeFunc,
Func <ServiceBufferFileStreamReader, long, FileStreamReadResult> readFunc,
QueryExecutionSettings overrideSettings = null)
{
// Setup: Create a mock file stream
byte[] storage = new byte[8192];
overrideSettings = overrideSettings ?? new QueryExecutionSettings();
const long rowId = 100;
// If:
// ... I write a type T to the writer
using (ServiceBufferFileStreamWriter writer = new ServiceBufferFileStreamWriter(new MemoryStream(storage), overrideSettings))
{
int writtenBytes = writeFunc(writer, value);
Assert.Equal(valueLength, writtenBytes);
}
// ... And read the type T back
FileStreamReadResult outValue;
using (ServiceBufferFileStreamReader reader = new ServiceBufferFileStreamReader(new MemoryStream(storage), overrideSettings))
{
outValue = readFunc(reader, rowId);
}
// Then:
Assert.Equal(value, outValue.Value.RawObject);
Assert.Equal(valueLength, outValue.TotalLength);
Assert.NotNull(outValue.Value);
// ... The id we set should be stored in the returned db cell value
Assert.Equal(rowId, outValue.Value.RowId);
return(outValue.Value.DisplayValue);
}
