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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.Text;
using System.Text.Encodings.Web;
using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.Mvc.Abstractions;
using Microsoft.AspNetCore.Routing;
using Microsoft.Extensions.DependencyInjection;
namespace Microsoft.AspNetCore.Mvc.Routing;
public class UrlHelperBaseTest
{
public static TheoryData<string, string, string> GeneratePathFromRoute_HandlesLeadingAndTrailingSlashesData =>
new TheoryData<string, string, string>
{
{ null, "", "/" },
{ null, "/", "/" },
{ null, "Hello", "/Hello" },
{ null, "/Hello", "/Hello" },
{ "/", "", "/" },
{ "/", "hello", "/hello" },
{ "/", "/hello", "/hello" },
{ "/hello", "", "/hello" },
{ "/hello/", "", "/hello/" },
{ "/hello", "/", "/hello/" },
{ "/hello/", "world", "/hello/world" },
{ "/hello/", "/world", "/hello/world" },
{ "/hello/", "/world 123", "/hello/world 123" },
{ "/hello/", "/world%20123", "/hello/world%20123" },
};
[Theory]
[MemberData(nameof(GeneratePathFromRoute_HandlesLeadingAndTrailingSlashesData))]
public void AppendPathAndFragment_HandlesLeadingAndTrailingSlashes(
string appBase,
string virtualPath,
string expected)
{
// Arrange
var services = CreateServices();
var httpContext = CreateHttpContext(services, appBase, host: null, protocol: null);
var builder = new StringBuilder();
// Act
UrlHelperBase.AppendPathAndFragment(builder, httpContext.Request.PathBase, virtualPath, string.Empty);
// Assert
Assert.Equal(expected, builder.ToString());
}
[Theory]
[MemberData(nameof(GeneratePathFromRoute_HandlesLeadingAndTrailingSlashesData))]
public void AppendPathAndFragment_AppendsFragments(
string appBase,
string virtualPath,
string expected)
{
// Arrange
var fragmentValue = "fragment-value";
expected += $"#{fragmentValue}";
var services = CreateServices();
var httpContext = CreateHttpContext(services, appBase, host: null, protocol: null);
var builder = new StringBuilder();
// Act
UrlHelperBase.AppendPathAndFragment(builder, httpContext.Request.PathBase, virtualPath, fragmentValue);
// Assert
Assert.Equal(expected, builder.ToString());
}
[Theory]
[InlineData(null, null, null, "/", null, "/")]
[InlineData(null, null, null, "/Hello", null, "/Hello")]
[InlineData(null, null, null, "Hello", null, "/Hello")]
[InlineData("/", null, null, "", null, "/")]
[InlineData("/hello/", null, null, "/world", null, "/hello/world")]
[InlineData("/hello/", "https", "myhost", "/world", "fragment-value", "https://myhost/hello/world#fragment-value")]
public void GenerateUrl_FastAndSlowPathsReturnsExpected(
string appBase,
string protocol,
string host,
string virtualPath,
string fragment,
string expected)
{
// Arrange
var services = CreateServices();
var httpContext = CreateHttpContext(services, appBase, host, protocol);
var actionContext = CreateActionContext(httpContext);
var urlHelper = new TestUrlHelper(actionContext);
// Act
var url = urlHelper.GenerateUrl(protocol, host, virtualPath, fragment);
// Assert
Assert.Equal(expected, url);
}
private static IServiceProvider CreateServices()
{
var services = new ServiceCollection();
services.AddOptions();
services.AddLogging();
services.AddRouting();
services
.AddSingleton<UrlEncoder>(UrlEncoder.Default);
return services.BuildServiceProvider();
}
private static HttpContext CreateHttpContext(
IServiceProvider services,
string appRoot,
string host,
string protocol)
{
appRoot = string.IsNullOrEmpty(appRoot) ? string.Empty : appRoot;
host = string.IsNullOrEmpty(host) ? "localhost" : host;
var context = new DefaultHttpContext();
context.RequestServices = services;
context.Request.PathBase = new PathString(appRoot);
context.Request.Host = new HostString(host);
context.Request.Scheme = protocol;
return context;
}
private static ActionContext CreateActionContext(HttpContext context)
{
return new ActionContext(context, new RouteData(), new ActionDescriptor());
}
private class TestUrlHelper : UrlHelperBase
{
public TestUrlHelper(ActionContext actionContext) :
base(actionContext)
{
}
public override string Action(UrlActionContext actionContext)
{
throw new NotImplementedException();
}
public override string RouteUrl(UrlRouteContext routeContext)
{
throw new NotImplementedException();
}
public new string GenerateUrl(
string protocol,
string host,
string virtualPath,
string fragment)
{
return base.GenerateUrl(
protocol,
host,
virtualPath,
fragment);
}
}
}
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