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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;
using System.Collections.Generic;
using System.Globalization;
using CsvHelper.Configuration;
using CsvHelper.Tests.Mocks;
using Xunit;
namespace CsvHelper.Tests.Reading
{
public class TryGetTests
{
[Fact]
public void TryGetFieldInvalidIndexTest()
{
var parserMock = new ParserMock
{
new[] { "One", "Two" },
new[] { "one", "two" },
null
};
var reader = new CsvReader(parserMock);
reader.Read();
var got = reader.TryGetField(0, out int field);
Assert.False(got);
Assert.Equal(default(int), field);
}
[Fact]
public void TryGetFieldInvalidNameTest()
{
var parserMock = new ParserMock
{
new[] { "One", "Two" },
new[] { "one", "two" },
null
};
var reader = new CsvReader(parserMock);
reader.Read();
reader.ReadHeader();
var got = reader.TryGetField("One", out int field);
Assert.False(got);
Assert.Equal(default(int), field);
}
[Fact]
public void TryGetFieldTest()
{
var parserMock = new ParserMock
{
new[] { "One", "Two" },
new[] { "1", "2" },
null
};
var reader = new CsvReader(parserMock);
reader.Read();
reader.ReadHeader();
reader.Read();
var got = reader.TryGetField(0, out int field);
Assert.True(got);
Assert.Equal(1, field);
}
[Fact]
public void TryGetFieldStrictTest()
{
var parserMock = new ParserMock
{
new[] { "One", "Two" },
new[] { "1", "2" },
null
};
var reader = new CsvReader(parserMock);
reader.Read();
reader.ReadHeader();
reader.Read();
var got = reader.TryGetField("One", out int field);
Assert.True(got);
Assert.Equal(1, field);
}
[Fact]
public void TryGetFieldEmptyDate()
{
var config = new CsvConfiguration(CultureInfo.InvariantCulture)
{
HasHeaderRecord = false,
};
// DateTimeConverter.IsValid() doesn't work correctly
// so we need to test and make sure that the conversion
// fails for an empty string for a date.
var parserMock = new ParserMock(config)
{
new[] { " " },
null
};
var reader = new CsvReader(parserMock);
reader.Read();
var got = reader.TryGetField(0, out DateTime field);
Assert.False(got);
Assert.Equal(DateTime.MinValue, field);
}
[Fact]
public void TryGetNullableFieldEmptyDate()
{
var config = new CsvConfiguration(CultureInfo.InvariantCulture)
{
HasHeaderRecord = false,
};
// DateTimeConverter.IsValid() doesn't work correctly
// so we need to test and make sure that the conversion
// fails for an empty string for a date.
var parserMock = new ParserMock(config)
{
new[] { " " },
null
};
var reader = new CsvReader(parserMock);
reader.Read();
var got = reader.TryGetField(0, out DateTime? field);
Assert.False(got);
Assert.Null(field);
}
[Fact]
public void TryGetDoesNotThrowWhenWillThrowOnMissingFieldIsEnabled()
{
var config = new CsvConfiguration(CultureInfo.InvariantCulture)
{
MissingFieldFound = null,
};
var parserMock = new ParserMock(config)
{
new[] { "1" },
null
};
var reader = new CsvReader(parserMock);
reader.Read();
reader.ReadHeader();
Assert.False(reader.TryGetField("test", out string field));
}
[Fact]
public void TryGetFieldIndexTest()
{
var parserMock = new ParserMock
{
{ "One", "Two", "Two" },
{ "1", "2", "3" }
};
var reader = new CsvReader(parserMock);
reader.Read();
reader.ReadHeader();
reader.Read();
var got = reader.TryGetField("Two", 0, out int field);
Assert.True(got);
Assert.Equal(2, field);
got = reader.TryGetField("Two", 1, out field);
Assert.True(got);
Assert.Equal(3, field);
}
[Fact]
public void TryGetMissingDateTimeFieldTest()
{
var parserMock = new ParserMock
{
{ "Id", "Name" },
{ "1" },
null
};
var reader = new CsvReader(parserMock);
reader.Read();
reader.ReadHeader();
reader.Read();
var got = reader.TryGetField(typeof(DateTime), "Name", out object field);
Assert.False(got);
Assert.Equal(DateTime.MinValue, field);
}
[Fact]
public void TryGetMissingDateTimeOffsetFieldTest()
{
var parserMock = new ParserMock
{
{ "Id", "DateTime" },
{ "1" },
null
};
var reader = new CsvReader(parserMock);
reader.Read();
reader.ReadHeader();
reader.Read();
var got = reader.TryGetField(typeof(DateTimeOffset), "DateTime", out object field);
Assert.False(got);
Assert.Equal(DateTimeOffset.MinValue, field);
}
}
}
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