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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 CsvHelper.Configuration;
using Xunit;
namespace CsvHelper.Tests.Defaults
{
public class WritingDefaultsTests
{
[Fact]
public void EmptyFieldsOnNullReferencePropertyTest()
{
var config = new CsvConfiguration(CultureInfo.InvariantCulture)
{
UseNewObjectForNullReferenceMembers = false,
};
using (var stream = new MemoryStream())
using (var reader = new StreamReader(stream))
using (var writer = new StreamWriter(stream))
using (var csv = new CsvWriter(writer, config))
{
var records = new List<A>
{
new A
{
AId = 1,
},
new A
{
AId = 2,
B = new B
{
BId = 3,
},
},
};
csv.Context.RegisterClassMap<AMap>();
csv.WriteRecords(records);
writer.Flush();
stream.Position = 0;
var data = reader.ReadToEnd();
var expected = "AId,BId,CId\r\n" +
"1,,\r\n" +
"2,3,0\r\n";
Assert.Equal(expected, data);
}
}
[Fact]
public void DefaultFieldsOnNullReferencePropertyTest()
{
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 records = new List<A>
{
new A
{
AId = 1,
},
new A
{
AId = 2,
B = new B
{
BId = 3,
},
},
};
csv.Context.RegisterClassMap<AMap>();
csv.WriteRecords(records);
writer.Flush();
stream.Position = 0;
var data = reader.ReadToEnd();
var expected = "AId,BId,CId\r\n" +
"1,0,0\r\n" +
"2,3,0\r\n";
Assert.Equal(expected, data);
}
}
private class A
{
public int AId { get; set; }
public B B { get; set; }
}
private sealed class AMap : ClassMap<A>
{
public AMap()
{
AutoMap(CultureInfo.InvariantCulture);
Map(m => m.AId).Default(1);
}
}
public class B
{
public int BId { get; set; }
public int CId { get; set; }
}
}
}
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