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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.Net.Http.Headers;
using Xunit;
namespace Microsoft.AspNetCore.Http.Headers;
public class HeaderDictionaryTypeExtensionsTest
{
[Fact]
public void GetT_KnownTypeWithValidValue_Success()
{
var context = new DefaultHttpContext();
context.Request.Headers.ContentType = "text/plain";
var result = context.Request.GetTypedHeaders().Get<MediaTypeHeaderValue>(HeaderNames.ContentType);
var expected = new MediaTypeHeaderValue("text/plain");
Assert.Equal(expected, result);
}
[Fact]
public void GetT_KnownTypeWithMissingValue_Null()
{
var context = new DefaultHttpContext();
var result = context.Request.GetTypedHeaders().Get<MediaTypeHeaderValue>(HeaderNames.ContentType);
Assert.Null(result);
}
[Fact]
public void GetT_KnownTypeWithInvalidValue_Null()
{
var context = new DefaultHttpContext();
context.Request.Headers.ContentType = "invalid";
var result = context.Request.GetTypedHeaders().Get<MediaTypeHeaderValue>(HeaderNames.ContentType);
Assert.Null(result);
}
[Fact]
public void GetT_UnknownTypeWithTryParseAndValidValue_Success()
{
var context = new DefaultHttpContext();
context.Request.Headers["custom"] = "valid";
var result = context.Request.GetTypedHeaders().Get<TestHeaderValue>("custom");
Assert.NotNull(result);
}
[Fact]
public void GetT_UnknownTypeWithTryParseAndInvalidValue_Null()
{
var context = new DefaultHttpContext();
context.Request.Headers["custom"] = "invalid";
var result = context.Request.GetTypedHeaders().Get<TestHeaderValue>("custom");
Assert.Null(result);
}
[Fact]
public void GetT_UnknownTypeWithTryParseAndMissingValue_Null()
{
var context = new DefaultHttpContext();
var result = context.Request.GetTypedHeaders().Get<TestHeaderValue>("custom");
Assert.Null(result);
}
[Fact]
public void GetT_UnknownTypeWithoutTryParse_Throws()
{
var context = new DefaultHttpContext();
context.Request.Headers["custom"] = "valid";
Assert.Throws<NotSupportedException>(() => context.Request.GetTypedHeaders().Get<object>("custom"));
}
[Fact]
public void GetListT_KnownTypeWithValidValue_Success()
{
var context = new DefaultHttpContext();
context.Request.Headers.Accept = "text/plain; q=0.9, text/other, */*";
var result = context.Request.GetTypedHeaders().GetList<MediaTypeHeaderValue>(HeaderNames.Accept);
var expected = new[] {
new MediaTypeHeaderValue("text/plain", 0.9),
new MediaTypeHeaderValue("text/other"),
new MediaTypeHeaderValue("*/*"),
}.ToList();
Assert.Equal(expected, result);
}
[Fact]
public void GetListT_KnownTypeWithMissingValue_EmptyList()
{
var context = new DefaultHttpContext();
var result = context.Request.GetTypedHeaders().GetList<MediaTypeHeaderValue>(HeaderNames.Accept);
Assert.Empty(result);
}
[Fact]
public void GetListT_KnownTypeWithInvalidValue_EmptyList()
{
var context = new DefaultHttpContext();
context.Request.Headers.Accept = "invalid";
var result = context.Request.GetTypedHeaders().GetList<MediaTypeHeaderValue>(HeaderNames.Accept);
Assert.Empty(result);
}
[Fact]
public void GetListT_UnknownTypeWithTryParseListAndValidValue_Success()
{
var context = new DefaultHttpContext();
context.Request.Headers["custom"] = "valid";
var results = context.Request.GetTypedHeaders().GetList<TestHeaderValue>("custom");
Assert.NotNull(results);
Assert.Equal(new[] { new TestHeaderValue() }.ToList(), results);
}
[Fact]
public void GetListT_UnknownTypeWithTryParseListAndInvalidValue_EmptyList()
{
var context = new DefaultHttpContext();
context.Request.Headers["custom"] = "invalid";
var results = context.Request.GetTypedHeaders().GetList<TestHeaderValue>("custom");
Assert.Empty(results);
}
[Fact]
public void GetListT_UnknownTypeWithTryParseListAndMissingValue_EmptyList()
{
var context = new DefaultHttpContext();
var results = context.Request.GetTypedHeaders().GetList<TestHeaderValue>("custom");
Assert.Empty(results);
}
[Fact]
public void GetListT_UnknownTypeWithoutTryParseList_Throws()
{
var context = new DefaultHttpContext();
context.Request.Headers["custom"] = "valid";
Assert.Throws<NotSupportedException>(() => context.Request.GetTypedHeaders().GetList<object>("custom"));
}
public class TestHeaderValue
{
public static bool TryParse(string value, out TestHeaderValue result)
{
if (string.Equals("valid", value, StringComparison.Ordinal))
{
result = new TestHeaderValue();
return true;
}
result = null;
return false;
}
public static bool TryParseList(IList<string> values, out IList<TestHeaderValue> result)
{
var results = new List<TestHeaderValue>();
foreach (var value in values)
{
if (string.Equals("valid", value, StringComparison.Ordinal))
{
results.Add(new TestHeaderValue());
}
}
if (results.Count > 0)
{
result = results;
return true;
}
result = null;
return false;
}
public override bool Equals(object obj)
{
var other = obj as TestHeaderValue;
return other != null;
}
public override int GetHashCode()
{
return 0;
}
}
}
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