public async Task<IDataItem> ReadNextAsync(ReadOutputByRef readOutput, CancellationToken cancellation)
{
try
{
if (reader == null)
{
reader = new CsvReader(
await sourceStreamProvider.CreateReader(cancellation),
new CsvReaderConfiguration
{
TrimQuoted = configuration.TrimQuoted,
IgnoreUnquotedNulls = configuration.NoUnquotedNulls
});
header = ReadHeaderRow();
}
if (header == null)
return null;
return await Task.Factory.StartNew<IDataItem>(ReadNext);
}
finally
{
readOutput.DataItemId = String.Format(CultureInfo.InvariantCulture,
Resources.DataItemIdFormat, sourceStreamProvider.Id, reader == null ? 0 : reader.Row);
}
}
private static void ReadAndVerify(string inputFileName, CsvReaderConfiguration configuration, object[][] expectedRows)
{
using (var csvReader = new CsvReader(new StreamReader(inputFileName), configuration))
{
IReadOnlyList<object> row;
while ((row = csvReader.Read()) != null)
{
Assert.IsTrue(csvReader.Row <= expectedRows.Length, TestResources.ExtraRowRead);
CollectionAssert.AreEqual(expectedRows[csvReader.Row - 1], row.ToArray(), TestResources.InvalidRowRead);
}
}
}
