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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 CsvHelper.Configuration;
using Xunit;
using System;
using System.Globalization;
using System.IO;
using System.Linq;
namespace CsvHelper.Tests.Reading
{
public class ConstructorParametersTests
{
[Fact]
public void ValueTypesParamsMatchPropsTest()
{
using (var stream = new MemoryStream())
using (var writer = new StreamWriter(stream))
using (var reader = new StreamReader(stream))
using (var csv = new CsvReader(reader, CultureInfo.InvariantCulture))
{
writer.WriteLine("Id,Name");
writer.WriteLine("1,one");
writer.Flush();
stream.Position = 0;
var records = csv.GetRecords<ValueTypesParamsMatchProps>().ToList();
Assert.Single(records);
var record = records[0];
Assert.Equal(1, record.Id);
Assert.Equal("one", record.Name);
}
}
[Fact]
public void ValueTypesParamsDontMatchPropsTest()
{
var config = new CsvConfiguration(CultureInfo.InvariantCulture)
{
PrepareHeaderForMatch = args => CultureInfo.CurrentCulture.TextInfo.ToTitleCase(args.Header)
};
using (var stream = new MemoryStream())
using (var writer = new StreamWriter(stream))
using (var reader = new StreamReader(stream))
using (var csv = new CsvReader(reader, config))
{
writer.WriteLine("Id,Name");
writer.WriteLine("1,one");
writer.Flush();
stream.Position = 0;
var records = csv.GetRecords<ValueTypesParamsDontMatchProps>().ToList();
Assert.Single(records);
var record = records[0];
Assert.Equal(1, record.Id);
Assert.Equal("one", record.Name);
}
}
[Fact]
public void MultipleConstructorsTest()
{
var config = new CsvConfiguration(CultureInfo.InvariantCulture)
{
PrepareHeaderForMatch = args => CultureInfo.CurrentCulture.TextInfo.ToTitleCase(args.Header)
};
using (var stream = new MemoryStream())
using (var writer = new StreamWriter(stream))
using (var reader = new StreamReader(stream))
using (var csv = new CsvReader(reader, config))
{
writer.WriteLine("Id,Name");
writer.WriteLine("1,one");
writer.Flush();
stream.Position = 0;
var records = csv.GetRecords<MultipleConstructors>().ToList();
Assert.Single(records);
var record = records[0];
Assert.Equal(1, record.Id);
Assert.Equal("one", record.Name);
}
}
[Fact]
public void UseDifferentConstructorTest()
{
var config = new CsvConfiguration(CultureInfo.InvariantCulture)
{
PrepareHeaderForMatch = args => CultureInfo.CurrentCulture.TextInfo.ToTitleCase(args.Header),
GetConstructor = args => args.ClassType.GetConstructors().First(),
};
using (var stream = new MemoryStream())
using (var writer = new StreamWriter(stream))
using (var reader = new StreamReader(stream))
using (var csv = new CsvReader(reader, config))
{
writer.WriteLine("Id,Name");
writer.WriteLine("1,one");
writer.Flush();
stream.Position = 0;
var records = csv.GetRecords<MultipleConstructors>().ToList();
Assert.Single(records);
var record = records[0];
Assert.Equal(1, record.Id);
Assert.Null(record.Name);
}
}
[Fact]
public void UseDifferentConstructorWhenDefaultIsAvailableTest()
{
var config = new CsvConfiguration(CultureInfo.InvariantCulture)
{
PrepareHeaderForMatch = args => CultureInfo.CurrentCulture.TextInfo.ToTitleCase(args.Header),
ShouldUseConstructorParameters = args =>
!args.ParameterType.IsUserDefinedStruct()
&& !args.ParameterType.IsInterface
&& Type.GetTypeCode(args.ParameterType) == TypeCode.Object,
};
using (var stream = new MemoryStream())
using (var writer = new StreamWriter(stream))
using (var reader = new StreamReader(stream))
using (var csv = new CsvReader(reader, config))
{
writer.WriteLine("Id,Name");
writer.WriteLine("1,one");
writer.Flush();
stream.Position = 0;
var records = csv.GetRecords<MultipleConstructorsWithDefault>().ToList();
Assert.Single(records);
var record = records[0];
Assert.Equal(1, record.Id);
Assert.Equal("one", record.Name);
}
}
private class ValueTypesParamsMatchProps
{
public int Id { get; private set; }
public string Name { get; private set; }
public ValueTypesParamsMatchProps(int Id, string Name)
{
this.Id = Id;
this.Name = Name;
}
}
private class ValueTypesParamsDontMatchProps
{
public int Id { get; private set; }
public string Name { get; private set; }
public ValueTypesParamsDontMatchProps(int id, string name)
{
Id = id;
Name = name;
}
}
private class MultipleConstructors
{
public int Id { get; private set; }
public string Name { get; private set; }
public MultipleConstructors(int id)
{
Id = id;
}
public MultipleConstructors(int id, string name)
{
Id = id;
Name = name;
}
public MultipleConstructors(string name)
{
Name = name;
}
}
private class MultipleConstructorsWithDefault
{
public int Id { get; private set; }
public string Name { get; private set; }
public MultipleConstructorsWithDefault() { }
public MultipleConstructorsWithDefault(int id, string name)
{
Id = id;
Name = name;
}
}
}
}
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