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// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
using System;
using System.Collections.Generic;
using System.Linq;
using Microsoft.Extensions.Primitives;
using Xunit;
namespace Microsoft.AspNetCore.Http;
public class HeaderDictionaryTests
{
public static TheoryData HeaderSegmentData => new TheoryData<IEnumerable<string>>
{
new[] { "Value1", "Value2", "Value3", "Value4" },
new[] { "Value1", "", "Value3", "Value4" },
new[] { "Value1", "", "", "Value4" },
new[] { "Value1", "", null, "Value4" },
new[] { "", "", "", "" },
new[] { "", null, "", null },
};
[Fact]
public void PropertiesAreAccessible()
{
var headers = new HeaderDictionary(
new Dictionary<string, StringValues>(StringComparer.OrdinalIgnoreCase)
{
{ "Header1", "Value1" }
});
Assert.Single(headers);
Assert.Equal<string>(new[] { "Header1" }, headers.Keys);
Assert.True(headers.ContainsKey("header1"));
Assert.False(headers.ContainsKey("header2"));
Assert.Equal("Value1", headers["header1"]);
Assert.Equal(new[] { "Value1" }, headers["header1"].ToArray());
}
[Theory]
[MemberData(nameof(HeaderSegmentData))]
public void EmptyHeaderSegmentsAreIgnored(IEnumerable<string> segments)
{
var header = string.Join(",", segments);
var headers = new HeaderDictionary(
new Dictionary<string, StringValues>(StringComparer.OrdinalIgnoreCase)
{
{ "Header1", header},
});
var result = headers.GetCommaSeparatedValues("Header1");
var expectedResult = segments.Where(s => !string.IsNullOrEmpty(s));
Assert.Equal(expectedResult, result);
}
[Fact]
public void EmptyQuotedHeaderSegmentsAreIgnored()
{
var headers = new HeaderDictionary(
new Dictionary<string, StringValues>(StringComparer.OrdinalIgnoreCase)
{
{ "Header1", "Value1,\"\",,Value2" },
});
var result = headers.GetCommaSeparatedValues("Header1");
Assert.Equal(new[] { "Value1", "Value2" }, result);
}
[Fact]
public void ReadActionsWorkWhenReadOnly()
{
var headers = new HeaderDictionary(
new Dictionary<string, StringValues>(StringComparer.OrdinalIgnoreCase)
{
{ "Header1", "Value1" }
});
headers.IsReadOnly = true;
Assert.Single(headers);
Assert.Equal<string>(new[] { "Header1" }, headers.Keys);
Assert.True(headers.ContainsKey("header1"));
Assert.False(headers.ContainsKey("header2"));
Assert.Equal("Value1", headers["header1"]);
Assert.Equal(new[] { "Value1" }, headers["header1"].ToArray());
}
[Fact]
public void WriteActionsThrowWhenReadOnly()
{
var headers = new HeaderDictionary();
headers.IsReadOnly = true;
Assert.Throws<InvalidOperationException>(() => headers["header1"] = "value1");
Assert.Throws<InvalidOperationException>(() => ((IDictionary<string, StringValues>)headers)["header1"] = "value1");
Assert.Throws<InvalidOperationException>(() => headers.ContentLength = 12);
Assert.Throws<InvalidOperationException>(() => headers.Add(new KeyValuePair<string, StringValues>("header1", "value1")));
Assert.Throws<InvalidOperationException>(() => headers.Add("header1", "value1"));
Assert.Throws<InvalidOperationException>(() => headers.Clear());
Assert.Throws<InvalidOperationException>(() => headers.Remove(new KeyValuePair<string, StringValues>("header1", "value1")));
Assert.Throws<InvalidOperationException>(() => headers.Remove("header1"));
}
[Fact]
public void GetCommaSeparatedValues_WorksForUnquotedHeaderValuesEndingWithSpace()
{
var headers = new HeaderDictionary
{
{ "Via", "value " },
};
var result = headers.GetCommaSeparatedValues("Via");
Assert.Equal(new[] { "value " }, result);
}
}
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