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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 CsvHelper.Tests.Mocks;
using Xunit;
using System;
using System.Collections.Generic;
using System.Globalization;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace CsvHelper.Tests.Mappings.ConstructorParameter
{
public class OptionalMapTests
{
[Fact]
public void Parameter_WithName_CreatesParameterMaps()
{
var map = new DefaultClassMap<Foo>();
map.Parameter("id");
map.Parameter("name").Optional();
Assert.Equal(2, map.ParameterMaps.Count);
Assert.False(map.ParameterMaps[0].Data.IsOptional);
Assert.True(map.ParameterMaps[1].Data.IsOptional);
}
[Fact]
public void Parameter_WithConstructorFunctionAndName_CreatesParameterMaps()
{
var map = new DefaultClassMap<Foo>();
map.Parameter(() => ConfigurationFunctions.GetConstructor(new GetConstructorArgs(typeof(Foo))), "id");
map.Parameter(() => ConfigurationFunctions.GetConstructor(new GetConstructorArgs(typeof(Foo))), "name").Optional();
Assert.Equal(2, map.ParameterMaps.Count);
Assert.False(map.ParameterMaps[0].Data.IsOptional);
Assert.True(map.ParameterMaps[1].Data.IsOptional);
}
[Fact]
public void Parameter_WithConstructorAndProperty_CreatesParameterMaps()
{
var constructor = ConfigurationFunctions.GetConstructor(new GetConstructorArgs(typeof(Foo)));
var parameters = constructor.GetParameters();
var map = new DefaultClassMap<Foo>();
map.Parameter(constructor, parameters[0]);
map.Parameter(constructor, parameters[1]).Optional();
Assert.Equal(2, map.ParameterMaps.Count);
Assert.False(map.ParameterMaps[0].Data.IsOptional);
Assert.True(map.ParameterMaps[1].Data.IsOptional);
}
[Fact]
public void GetRecords_WithParameterMap_HasHeader_CreatesRecords()
{
var parser = new ParserMock
{
{ "id" },
{ "1" },
};
using (var csv = new CsvReader(parser))
{
var map = csv.Context.RegisterClassMap<FooMap>();
var records = csv.GetRecords<Foo>().ToList();
Assert.Single(records);
Assert.Equal(1, records[0].Id);
Assert.Null(records[0].Name);
}
}
[Fact]
public void GetRecords_WithParameterMap_NoHeader_CreatesRecords()
{
var config = new CsvConfiguration(CultureInfo.InvariantCulture)
{
HasHeaderRecord = false,
};
var parser = new ParserMock(config)
{
{ "1" },
};
using (var csv = new CsvReader(parser))
{
csv.Context.RegisterClassMap<FooMap>();
var records = csv.GetRecords<Foo>().ToList();
Assert.Single(records);
Assert.Equal(1, records[0].Id);
Assert.Null(records[0].Name);
}
}
[Fact]
public void WriteRecords_WithParameterMap_DoesntUseParameterMaps()
{
var records = new List<Foo>
{
new Foo(1, null),
};
using (var writer = new StringWriter())
using (var csv = new CsvWriter(writer, CultureInfo.InvariantCulture))
{
csv.Context.RegisterClassMap<FooMap>();
csv.WriteRecords(records);
var expected = new StringBuilder();
expected.Append("Id,Name\r\n");
expected.Append("1,\r\n");
Assert.Equal(expected.ToString(), writer.ToString());
}
}
private class Foo
{
public int Id { get; private set; }
public string Name { get; private set; }
public Foo(int id, string name)
{
Id = id;
Name = name;
}
}
private class FooMap : ClassMap<Foo>
{
public FooMap()
{
Map(m => m.Id);
Map(m => m.Name);
Parameter("id");
Parameter("name").Optional();
}
}
}
}
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