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// Copyright 2009-2022 Josh Close
// This file is a part of CsvHelper and is dual licensed under MS-PL and Apache 2.0.
// See LICENSE.txt for details or visit http://www.opensource.org/licenses/ms-pl.html for MS-PL and http://opensource.org/licenses/Apache-2.0 for Apache 2.0.
// https://github.com/JoshClose/CsvHelper
using System.Collections.Generic;
using System.Globalization;
using System.IO;
using System.Linq;
using System.Text;
using CsvHelper.Configuration;
using Xunit;
namespace CsvHelper.Tests
{
public class MapPropertyMultipleTimesTests
{
[Fact]
public void MapPropertiesToMultipleFieldsWhenWritingTest()
{
using (var stream = new MemoryStream())
using (var reader = new StreamReader(stream))
using (var writer = new StreamWriter(stream))
using (var csv = new CsvWriter(writer, CultureInfo.InvariantCulture))
{
var list = new List<Test>
{
new Test { Id = 1, Name = "one" }
};
csv.Context.RegisterClassMap<TestMap>();
csv.WriteRecords(list);
writer.Flush();
stream.Position = 0;
var expected = new TestStringBuilder(csv.Configuration.NewLine);
expected.AppendLine("Id1,Name1,Id2,Name2");
expected.AppendLine("1,one,1,one");
var result = reader.ReadToEnd();
Assert.Equal(expected.ToString(), result);
}
}
[Fact]
public void MapPropertiesToMultipleFieldsWhenReadingTest()
{
// This is not something that anyone should do, but this
// is the expected behavior if they do.
using (var stream = new MemoryStream())
using (var reader = new StreamReader(stream))
using (var writer = new StreamWriter(stream))
using (var csv = new CsvReader(reader, CultureInfo.InvariantCulture))
{
writer.WriteLine("Id1,Name1,Id2,Name2");
writer.WriteLine("1,one,2,two");
writer.Flush();
stream.Position = 0;
csv.Context.RegisterClassMap<TestMap>();
var records = csv.GetRecords<Test>().ToList();
Assert.Equal(2, records[0].Id);
Assert.Equal("two", records[0].Name);
}
}
private class Test
{
public int Id { get; set; }
public string Name { get; set; }
}
private sealed class TestMap : ClassMap<Test>
{
public TestMap()
{
Map(m => m.Id).Name("Id1");
Map(m => m.Name).Name("Name1");
Map(m => m.Id, false).Name("Id2");
Map(m => m.Name, false).Name("Name2");
}
}
}
}
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