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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.Encodings.Web;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.WebEncoders.Testing;
using Xunit;
namespace Microsoft.Extensions.WebEncoders;
public class EncoderServiceCollectionExtensionsTests
{
[Fact]
public void AddWebEncoders_WithoutOptions_RegistersDefaultEncoders()
{
// Arrange
var serviceCollection = new ServiceCollection();
// Act
serviceCollection.AddWebEncoders();
// Assert
var serviceProvider = serviceCollection.BuildServiceProvider();
Assert.Same(HtmlEncoder.Default, serviceProvider.GetRequiredService<HtmlEncoder>()); // default encoder
Assert.Same(HtmlEncoder.Default, serviceProvider.GetRequiredService<HtmlEncoder>()); // as singleton instance
Assert.Same(JavaScriptEncoder.Default, serviceProvider.GetRequiredService<JavaScriptEncoder>()); // default encoder
Assert.Same(JavaScriptEncoder.Default, serviceProvider.GetRequiredService<JavaScriptEncoder>()); // as singleton instance
Assert.Same(UrlEncoder.Default, serviceProvider.GetRequiredService<UrlEncoder>()); // default encoder
Assert.Same(UrlEncoder.Default, serviceProvider.GetRequiredService<UrlEncoder>()); // as singleton instance
}
[Fact]
public void AddWebEncoders_WithOptions_RegistersEncodersWithCustomCodeFilter()
{
// Arrange
var serviceCollection = new ServiceCollection();
// Act
serviceCollection.AddWebEncoders(options =>
{
options.TextEncoderSettings = new TextEncoderSettings();
options.TextEncoderSettings.AllowCharacters("ace".ToCharArray()); // only these three chars are allowed
});
// Assert
var serviceProvider = serviceCollection.BuildServiceProvider();
var htmlEncoder = serviceProvider.GetRequiredService<HtmlEncoder>();
Assert.Equal("abcde", htmlEncoder.Encode("abcde"));
Assert.Same(htmlEncoder, serviceProvider.GetRequiredService<HtmlEncoder>()); // as singleton instance
var javaScriptEncoder = serviceProvider.GetRequiredService<JavaScriptEncoder>();
Assert.Equal(@"a\u0062c\u0064e", javaScriptEncoder.Encode("abcde"));
Assert.Same(javaScriptEncoder, serviceProvider.GetRequiredService<JavaScriptEncoder>()); // as singleton instance
var urlEncoder = serviceProvider.GetRequiredService<UrlEncoder>();
Assert.Equal("a%62c%64e", urlEncoder.Encode("abcde"));
Assert.Same(urlEncoder, serviceProvider.GetRequiredService<UrlEncoder>()); // as singleton instance
}
[Fact]
public void AddWebEncoders_DoesNotOverrideExistingRegisteredEncoders()
{
// Arrange
var serviceCollection = new ServiceCollection();
// Act
serviceCollection.AddSingleton<HtmlEncoder, HtmlTestEncoder>();
serviceCollection.AddSingleton<JavaScriptEncoder, JavaScriptTestEncoder>();
// we don't register an existing URL encoder
serviceCollection.AddWebEncoders(options =>
{
options.TextEncoderSettings = new TextEncoderSettings();
options.TextEncoderSettings.AllowCharacters("ace".ToCharArray()); // only these three chars are allowed
});
// Assert
var serviceProvider = serviceCollection.BuildServiceProvider();
var htmlEncoder = serviceProvider.GetRequiredService<HtmlEncoder>();
Assert.Equal("HtmlEncode[[abcde]]", htmlEncoder.Encode("abcde"));
var javaScriptEncoder = serviceProvider.GetRequiredService<JavaScriptEncoder>();
Assert.Equal("JavaScriptEncode[[abcde]]", javaScriptEncoder.Encode("abcde"));
var urlEncoder = serviceProvider.GetRequiredService<UrlEncoder>();
Assert.Equal("a%62c%64e", urlEncoder.Encode("abcde"));
}
}
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