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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.Globalization;
using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Hosting;
using Microsoft.AspNetCore.Localization;
using Microsoft.AspNetCore.TestHost;
using Microsoft.Extensions.Hosting;
namespace Microsoft.Extensions.Localization;
public class AcceptLanguageHeaderRequestCultureProviderTest
{
[Fact]
public async Task GetFallbackLanguage_ReturnsFirstNonNullCultureFromSupportedCultureList()
{
using var host = new HostBuilder()
.ConfigureWebHost(webHostBuilder =>
{
webHostBuilder
.UseTestServer()
.Configure(app =>
{
app.UseRequestLocalization(new RequestLocalizationOptions
{
DefaultRequestCulture = new RequestCulture("en-US"),
SupportedCultures = new List<CultureInfo>
{
new CultureInfo("ar-SA"),
new CultureInfo("en-US")
}
});
app.Run(context =>
{
var requestCultureFeature = context.Features.Get<IRequestCultureFeature>();
var requestCulture = requestCultureFeature.RequestCulture;
Assert.Equal("ar-SA", requestCulture.Culture.Name);
return Task.FromResult(0);
});
});
}).Build();
await host.StartAsync();
using (var server = host.GetTestServer())
{
var client = server.CreateClient();
client.DefaultRequestHeaders.AcceptLanguage.ParseAdd("jp,ar-SA,en-US");
var count = client.DefaultRequestHeaders.AcceptLanguage.Count;
var response = await client.GetAsync(string.Empty);
Assert.Equal(3, count);
}
}
[Fact]
public async Task GetFallbackLanguage_ReturnsFromSupportedCulture_AcceptLanguageListContainsSupportedCultures()
{
using var host = new HostBuilder()
.ConfigureWebHost(webHostBuilder =>
{
webHostBuilder
.UseTestServer()
.Configure(app =>
{
app.UseRequestLocalization(new RequestLocalizationOptions
{
DefaultRequestCulture = new RequestCulture("fr-FR"),
SupportedCultures = new List<CultureInfo>
{
new CultureInfo("ar-SA"),
new CultureInfo("en-US")
}
});
app.Run(context =>
{
var requestCultureFeature = context.Features.Get<IRequestCultureFeature>();
var requestCulture = requestCultureFeature.RequestCulture;
Assert.Equal("ar-SA", requestCulture.Culture.Name);
return Task.FromResult(0);
});
});
}).Build();
await host.StartAsync();
using (var server = host.GetTestServer())
{
var client = server.CreateClient();
client.DefaultRequestHeaders.AcceptLanguage.ParseAdd("en-GB,ar-SA,en-US");
var count = client.DefaultRequestHeaders.AcceptLanguage.Count;
var response = await client.GetAsync(string.Empty);
}
}
[Fact]
public async Task GetFallbackLanguage_ReturnsDefault_AcceptLanguageListDoesnotContainSupportedCultures()
{
using var host = new HostBuilder()
.ConfigureWebHost(webHostBuilder =>
{
webHostBuilder
.UseTestServer()
.Configure(app =>
{
app.UseRequestLocalization(new RequestLocalizationOptions
{
DefaultRequestCulture = new RequestCulture("fr-FR"),
SupportedCultures = new List<CultureInfo>
{
new CultureInfo("ar-SA"),
new CultureInfo("af-ZA")
}
});
app.Run(context =>
{
var requestCultureFeature = context.Features.Get<IRequestCultureFeature>();
var requestCulture = requestCultureFeature.RequestCulture;
Assert.Equal("fr-FR", requestCulture.Culture.Name);
return Task.FromResult(0);
});
});
}).Build();
await host.StartAsync();
using (var server = host.GetTestServer())
{
var client = server.CreateClient();
client.DefaultRequestHeaders.AcceptLanguage.ParseAdd("en-GB,ar-MA,en-US");
var count = client.DefaultRequestHeaders.AcceptLanguage.Count;
var response = await client.GetAsync(string.Empty);
Assert.Equal(3, count);
}
}
[Fact]
public async Task OmitDefaultRequestCultureShouldNotThrowNullReferenceException_And_ShouldGetTheRightCulture()
{
using var host = new HostBuilder()
.ConfigureWebHost(webHostBuilder =>
{
webHostBuilder
.UseTestServer()
.Configure(app =>
{
app.UseRequestLocalization(new RequestLocalizationOptions
{
DefaultRequestCulture = new RequestCulture("en-US"),
SupportedCultures = new List<CultureInfo>
{
new CultureInfo("ar-YE")
},
SupportedUICultures = new List<CultureInfo>
{
new CultureInfo("ar-YE")
}
});
app.Run(context =>
{
var requestCultureFeature = context.Features.Get<IRequestCultureFeature>();
var requestCulture = requestCultureFeature.RequestCulture;
Assert.Equal("ar-YE", requestCulture.Culture.Name);
Assert.Equal("ar-YE", requestCulture.UICulture.Name);
return Task.FromResult(0);
});
});
}).Build();
await host.StartAsync();
using (var server = host.GetTestServer())
{
var client = server.CreateClient();
client.DefaultRequestHeaders.AcceptLanguage.ParseAdd("en-GB,ar-YE,en-US");
var count = client.DefaultRequestHeaders.AcceptLanguage.Count;
var response = await client.GetAsync(string.Empty);
Assert.Equal(3, count);
}
}
}
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