public void TestTypeWriter_WriteAnonymous()
{
var people = from id in Enumerable.Range(0, 1)
select new
{
Id = id,
Name = "Bob " + id,
Created = new DateTime(2013, 1, 19)
};
var mapper = FixedLengthTypeMapper.DefineWriter(people);
mapper.Property(p => p.Id, 10).ColumnName("id");
mapper.Property(p => p.Name, 100).ColumnName("name");
mapper.Property(p => p.Created, 8).ColumnName("created").InputFormat("yyyyMMdd").OutputFormat("yyyyMMdd");
using (MemoryStream stream = new MemoryStream())
{
var options = new FixedLengthOptions()
{
FillCharacter = '@', RecordSeparator = "\n"
};
mapper.Write(stream, options);
stream.Position = 0; // go back to the beginning of the stream
FixedLengthSchema schema = mapper.GetSchema();
FlatFileReader reader = new FlatFileReader(new FixedLengthReader(stream, schema, options));
Assert.IsTrue(reader.Read(), "The writer did not write the entities.");
int id = reader.GetInt32(0);
string name = reader.GetString(1);
DateTime created = reader.GetDateTime(2);
Assert.AreEqual(people.First().Id, id, "The ID value was not persisted.");
Assert.AreEqual(people.First().Name, name, "The Name value was not persisted.");
Assert.AreEqual(people.First().Created, created, "The Created value was not persisted.");
Assert.IsFalse(reader.Read(), "The writer wrote too many records.");
}
}
