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TestServerTests.cs
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TestServerTests.cs
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// Copyright (c) .NET Foundation. All rights reserved.
// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
using System;
using System.Diagnostics;
using System.IO;
using System.Net;
using System.Net.Http;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Hosting;
using Microsoft.AspNetCore.Hosting.Server;
using Microsoft.AspNetCore.Hosting.Server.Features;
using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.Http.Features;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.DiagnosticAdapter;
using Microsoft.Extensions.Hosting;
using Microsoft.Extensions.Logging;
using Microsoft.Net.Http.Headers;
using Moq;
using Xunit;
namespace Microsoft.AspNetCore.TestHost
{
public class TestServerTests
{
[Fact]
public async Task GenericRawCreateAndStartHost_GetTestServer()
{
using var host = new HostBuilder()
.ConfigureWebHost(webBuilder =>
{
webBuilder
.ConfigureServices(services =>
{
services.AddSingleton<IServer>(serviceProvider => new TestServer(serviceProvider));
})
.Configure(app => { });
})
.Build();
await host.StartAsync();
var response = await host.GetTestServer().CreateClient().GetAsync("/");
Assert.Equal(HttpStatusCode.NotFound, response.StatusCode);
}
[Fact]
public async Task GenericCreateAndStartHost_GetTestServer()
{
using var host = await new HostBuilder()
.ConfigureWebHost(webBuilder =>
{
webBuilder
.UseTestServer()
.Configure(app => { });
})
.StartAsync();
var response = await host.GetTestServer().CreateClient().GetAsync("/");
Assert.Equal(HttpStatusCode.NotFound, response.StatusCode);
}
[Fact]
public async Task GenericCreateAndStartHost_GetTestClient()
{
using var host = await new HostBuilder()
.ConfigureWebHost(webBuilder =>
{
webBuilder
.UseTestServer()
.Configure(app => { });
})
.StartAsync();
var response = await host.GetTestClient().GetAsync("/");
Assert.Equal(HttpStatusCode.NotFound, response.StatusCode);
}
[Fact]
public void CreateWithDelegate()
{
// Arrange
// Act & Assert (Does not throw)
new TestServer(new WebHostBuilder().Configure(app => { }));
}
[Fact]
public void CreateWithDelegate_DI()
{
var builder = new WebHostBuilder()
.Configure(app => { })
.UseTestServer();
using var host = builder.Build();
host.Start();
}
[Fact]
public void DoesNotCaptureStartupErrorsByDefault()
{
var builder = new WebHostBuilder()
.Configure(app =>
{
throw new InvalidOperationException();
});
Assert.Throws<InvalidOperationException>(() => new TestServer(builder));
}
[Fact]
public async Task ServicesCanBeOverridenForTestingAsync()
{
var builder = new WebHostBuilder()
.ConfigureServices(s => s.AddSingleton<IServiceProviderFactory<ThirdPartyContainer>, ThirdPartyContainerServiceProviderFactory>())
.UseStartup<ThirdPartyContainerStartup>()
.ConfigureTestServices(services => services.AddSingleton(new SimpleService { Message = "OverridesConfigureServices" }))
.ConfigureTestContainer<ThirdPartyContainer>(container => container.Services.AddSingleton(new TestService { Message = "OverridesConfigureContainer" }));
var host = new TestServer(builder);
var response = await host.CreateClient().GetStringAsync("/");
Assert.Equal("OverridesConfigureServices, OverridesConfigureContainer", response);
}
public class ThirdPartyContainerStartup
{
public void ConfigureServices(IServiceCollection services) =>
services.AddSingleton(new SimpleService { Message = "ConfigureServices" });
public void ConfigureContainer(ThirdPartyContainer container) =>
container.Services.AddSingleton(new TestService { Message = "ConfigureContainer" });
public void Configure(IApplicationBuilder app) =>
app.Use((ctx, next) => ctx.Response.WriteAsync(
$"{ctx.RequestServices.GetRequiredService<SimpleService>().Message}, {ctx.RequestServices.GetRequiredService<TestService>().Message}"));
}
public class ThirdPartyContainer
{
public IServiceCollection Services { get; set; }
}
public class ThirdPartyContainerServiceProviderFactory : IServiceProviderFactory<ThirdPartyContainer>
{
public ThirdPartyContainer CreateBuilder(IServiceCollection services) => new ThirdPartyContainer { Services = services };
public IServiceProvider CreateServiceProvider(ThirdPartyContainer containerBuilder) => containerBuilder.Services.BuildServiceProvider();
}
[Fact]
public void CaptureStartupErrorsSettingPreserved()
{
var builder = new WebHostBuilder()
.CaptureStartupErrors(true)
.Configure(app =>
{
throw new InvalidOperationException();
});
// Does not throw
new TestServer(builder);
}
[Fact]
public void ApplicationServicesAvailableFromTestServer()
{
var testService = new TestService();
var builder = new WebHostBuilder()
.Configure(app => { })
.ConfigureServices(services =>
{
services.AddSingleton(testService);
});
var server = new TestServer(builder);
Assert.Equal(testService, server.Host.Services.GetRequiredService<TestService>());
}
[Fact]
public async Task RequestServicesAutoCreated()
{
var builder = new WebHostBuilder().Configure(app =>
{
app.Run(context =>
{
return context.Response.WriteAsync("RequestServices:" + (context.RequestServices != null));
});
});
var server = new TestServer(builder);
string result = await server.CreateClient().GetStringAsync("/path");
Assert.Equal("RequestServices:True", result);
}
[Fact]
public async Task DispoingTheRequestBodyDoesNotDisposeClientStreams()
{
var builder = new WebHostBuilder().Configure(app =>
{
app.Run(async context =>
{
using (var sr = new StreamReader(context.Request.Body))
{
await context.Response.WriteAsync(await sr.ReadToEndAsync());
}
});
});
var server = new TestServer(builder);
var stream = new ThrowOnDisposeStream();
stream.Write(Encoding.ASCII.GetBytes("Hello World"));
var response = await server.CreateClient().PostAsync("/", new StreamContent(stream));
Assert.True(response.IsSuccessStatusCode);
Assert.Equal("Hello World", await response.Content.ReadAsStringAsync());
}
public class CustomContainerStartup
{
public IServiceProvider Services;
public IServiceProvider ConfigureServices(IServiceCollection services)
{
Services = services.BuildServiceProvider();
return Services;
}
public void Configure(IApplicationBuilder app)
{
var applicationServices = app.ApplicationServices;
app.Run(async context =>
{
await context.Response.WriteAsync("ApplicationServicesEqual:" + (applicationServices == Services));
});
}
}
[Fact]
public async Task CustomServiceProviderSetsApplicationServices()
{
var builder = new WebHostBuilder().UseStartup<CustomContainerStartup>();
var server = new TestServer(builder);
string result = await server.CreateClient().GetStringAsync("/path");
Assert.Equal("ApplicationServicesEqual:True", result);
}
[Fact]
public void TestServerConstructorWithFeatureCollectionAllowsInitializingServerFeatures()
{
// Arrange
var url = "http://localhost:8000/appName/serviceName";
var builder = new WebHostBuilder()
.UseUrls(url)
.Configure(applicationBuilder =>
{
var serverAddressesFeature = applicationBuilder.ServerFeatures.Get<IServerAddressesFeature>();
Assert.Contains(serverAddressesFeature.Addresses, s => string.Equals(s, url, StringComparison.Ordinal));
});
var featureCollection = new FeatureCollection();
featureCollection.Set<IServerAddressesFeature>(new ServerAddressesFeature());
// Act
new TestServer(builder, featureCollection);
// Assert
// Is inside configure callback
}
[Fact]
public void TestServerConstructorWithNullFeatureCollectionThrows()
{
var builder = new WebHostBuilder()
.Configure(b => { });
Assert.Throws<ArgumentNullException>(() => new TestServer(builder, null));
}
[Fact]
public void TestServerConstructorShouldProvideServicesFromPassedServiceProvider()
{
// Arrange
var serviceProvider = new ServiceCollection().BuildServiceProvider();
// Act
var testServer = new TestServer(serviceProvider);
// Assert
Assert.Equal(serviceProvider, testServer.Services);
}
[Fact]
public void TestServerConstructorShouldProvideServicesFromWebHost()
{
// Arrange
var testService = new TestService();
var builder = new WebHostBuilder()
.ConfigureServices(services => services.AddSingleton(testService))
.Configure(_ => { });
// Act
var testServer = new TestServer(builder);
// Assert
Assert.Equal(testService, testServer.Services.GetService<TestService>());
}
[Fact]
public async Task TestServerConstructorShouldProvideServicesFromHostBuilder()
{
// Arrange
var testService = new TestService();
using var host = await new HostBuilder()
.ConfigureWebHost(webBuilder =>
{
webBuilder
.UseTestServer()
.ConfigureServices(services => services.AddSingleton(testService))
.Configure(_ => { });
})
.StartAsync();
// Act
// By calling GetTestServer(), a new TestServer instance will be instantiated
var testServer = host.GetTestServer();
// Assert
Assert.Equal(testService, testServer.Services.GetService<TestService>());
}
public class TestService { public string Message { get; set; } }
public class TestRequestServiceMiddleware
{
private RequestDelegate _next;
public TestRequestServiceMiddleware(RequestDelegate next)
{
_next = next;
}
public Task Invoke(HttpContext httpContext)
{
var services = new ServiceCollection();
services.AddTransient<TestService>();
httpContext.RequestServices = services.BuildServiceProvider();
return _next.Invoke(httpContext);
}
}
public class RequestServicesFilter : IStartupFilter
{
public Action<IApplicationBuilder> Configure(Action<IApplicationBuilder> next)
{
return builder =>
{
builder.UseMiddleware<TestRequestServiceMiddleware>();
next(builder);
};
}
}
[Fact]
public async Task ExistingRequestServicesWillNotBeReplaced()
{
var builder = new WebHostBuilder().Configure(app =>
{
app.Run(context =>
{
var service = context.RequestServices.GetService<TestService>();
return context.Response.WriteAsync("Found:" + (service != null));
});
})
.ConfigureServices(services =>
{
services.AddTransient<IStartupFilter, RequestServicesFilter>();
});
var server = new TestServer(builder);
string result = await server.CreateClient().GetStringAsync("/path");
Assert.Equal("Found:True", result);
}
[Fact]
public async Task CanSetCustomServiceProvider()
{
var builder = new WebHostBuilder().Configure(app =>
{
app.Run(context =>
{
context.RequestServices = new ServiceCollection()
.AddTransient<TestService>()
.BuildServiceProvider();
var s = context.RequestServices.GetRequiredService<TestService>();
return context.Response.WriteAsync("Success");
});
});
var server = new TestServer(builder);
string result = await server.CreateClient().GetStringAsync("/path");
Assert.Equal("Success", result);
}
public class ReplaceServiceProvidersFeatureFilter : IStartupFilter, IServiceProvidersFeature
{
public ReplaceServiceProvidersFeatureFilter(IServiceProvider appServices, IServiceProvider requestServices)
{
ApplicationServices = appServices;
RequestServices = requestServices;
}
public IServiceProvider ApplicationServices { get; set; }
public IServiceProvider RequestServices { get; set; }
public Action<IApplicationBuilder> Configure(Action<IApplicationBuilder> next)
{
return app =>
{
app.Use(async (context, nxt) =>
{
context.Features.Set<IServiceProvidersFeature>(this);
await nxt();
});
next(app);
};
}
}
[Fact]
public async Task ExistingServiceProviderFeatureWillNotBeReplaced()
{
var appServices = new ServiceCollection().BuildServiceProvider();
var builder = new WebHostBuilder().Configure(app =>
{
app.Run(context =>
{
Assert.Equal(appServices, context.RequestServices);
return context.Response.WriteAsync("Success");
});
})
.ConfigureServices(services =>
{
services.AddSingleton<IStartupFilter>(new ReplaceServiceProvidersFeatureFilter(appServices, appServices));
});
var server = new TestServer(builder);
var result = await server.CreateClient().GetStringAsync("/path");
Assert.Equal("Success", result);
}
public class NullServiceProvidersFeatureFilter : IStartupFilter, IServiceProvidersFeature
{
public IServiceProvider ApplicationServices { get; set; }
public IServiceProvider RequestServices { get; set; }
public Action<IApplicationBuilder> Configure(Action<IApplicationBuilder> next)
{
return app =>
{
app.Use(async (context, nxt) =>
{
context.Features.Set<IServiceProvidersFeature>(this);
await nxt();
});
next(app);
};
}
}
[Fact]
public async Task WillReplaceServiceProviderFeatureWithNullRequestServices()
{
var builder = new WebHostBuilder().Configure(app =>
{
app.Run(context =>
{
Assert.Null(context.RequestServices);
return context.Response.WriteAsync("Success");
});
})
.ConfigureServices(services =>
{
services.AddTransient<IStartupFilter, NullServiceProvidersFeatureFilter>();
});
var server = new TestServer(builder);
var result = await server.CreateClient().GetStringAsync("/path");
Assert.Equal("Success", result);
}
[Fact]
public async Task CanAccessLogger()
{
var builder = new WebHostBuilder().Configure(app =>
{
app.Run(context =>
{
var logger = app.ApplicationServices.GetRequiredService<ILogger<HttpContext>>();
return context.Response.WriteAsync("FoundLogger:" + (logger != null));
});
});
var server = new TestServer(builder);
string result = await server.CreateClient().GetStringAsync("/path");
Assert.Equal("FoundLogger:True", result);
}
[Fact]
public async Task CanAccessHttpContext()
{
var builder = new WebHostBuilder().Configure(app =>
{
app.Run(context =>
{
var accessor = app.ApplicationServices.GetRequiredService<IHttpContextAccessor>();
return context.Response.WriteAsync("HasContext:" + (accessor.HttpContext != null));
});
})
.ConfigureServices(services =>
{
services.AddSingleton<IHttpContextAccessor, HttpContextAccessor>();
});
var server = new TestServer(builder);
string result = await server.CreateClient().GetStringAsync("/path");
Assert.Equal("HasContext:True", result);
}
public class ContextHolder
{
public ContextHolder(IHttpContextAccessor accessor)
{
Accessor = accessor;
}
public IHttpContextAccessor Accessor { get; set; }
}
[Fact]
public async Task CanAddNewHostServices()
{
var builder = new WebHostBuilder().Configure(app =>
{
app.Run(context =>
{
var accessor = app.ApplicationServices.GetRequiredService<ContextHolder>();
return context.Response.WriteAsync("HasContext:" + (accessor.Accessor.HttpContext != null));
});
})
.ConfigureServices(services =>
{
services.AddSingleton<IHttpContextAccessor, HttpContextAccessor>();
services.AddSingleton<ContextHolder>();
});
var server = new TestServer(builder);
string result = await server.CreateClient().GetStringAsync("/path");
Assert.Equal("HasContext:True", result);
}
[Fact]
public async Task CreateInvokesApp()
{
var builder = new WebHostBuilder().Configure(app =>
{
app.Run(context =>
{
return context.Response.WriteAsync("CreateInvokesApp");
});
});
var server = new TestServer(builder);
string result = await server.CreateClient().GetStringAsync("/path");
Assert.Equal("CreateInvokesApp", result);
}
[Fact]
public async Task DisposeStreamIgnored()
{
var builder = new WebHostBuilder().Configure(app =>
{
app.Run(async context =>
{
await context.Response.WriteAsync("Response");
context.Response.Body.Dispose();
});
});
var server = new TestServer(builder);
HttpResponseMessage result = await server.CreateClient().GetAsync("/");
Assert.Equal(HttpStatusCode.OK, result.StatusCode);
Assert.Equal("Response", await result.Content.ReadAsStringAsync());
}
[Fact]
public async Task DisposedServerThrows()
{
var builder = new WebHostBuilder().Configure(app =>
{
app.Run(async context =>
{
await context.Response.WriteAsync("Response");
context.Response.Body.Dispose();
});
});
var server = new TestServer(builder);
HttpResponseMessage result = await server.CreateClient().GetAsync("/");
Assert.Equal(HttpStatusCode.OK, result.StatusCode);
server.Dispose();
await Assert.ThrowsAsync<ObjectDisposedException>(() => server.CreateClient().GetAsync("/"));
}
[Fact]
public async Task CancelAborts()
{
var builder = new WebHostBuilder()
.Configure(app =>
{
app.Run(context =>
{
TaskCompletionSource<int> tcs = new TaskCompletionSource<int>();
tcs.SetCanceled();
return tcs.Task;
});
});
var server = new TestServer(builder);
await Assert.ThrowsAsync<TaskCanceledException>(async () => { string result = await server.CreateClient().GetStringAsync("/path"); });
}
[Fact]
public async Task CanCreateViaStartupType()
{
var builder = new WebHostBuilder()
.UseStartup<TestStartup>();
var server = new TestServer(builder);
HttpResponseMessage result = await server.CreateClient().GetAsync("/");
Assert.Equal(HttpStatusCode.OK, result.StatusCode);
Assert.Equal("FoundService:True", await result.Content.ReadAsStringAsync());
}
[Fact]
public async Task CanCreateViaStartupTypeAndSpecifyEnv()
{
var builder = new WebHostBuilder()
.UseStartup<TestStartup>()
.UseEnvironment("Foo");
var server = new TestServer(builder);
HttpResponseMessage result = await server.CreateClient().GetAsync("/");
Assert.Equal(HttpStatusCode.OK, result.StatusCode);
Assert.Equal("FoundFoo:False", await result.Content.ReadAsStringAsync());
}
[Fact]
public async Task BeginEndDiagnosticAvailable()
{
DiagnosticListener diagnosticListener = null;
var builder = new WebHostBuilder()
.Configure(app =>
{
diagnosticListener = app.ApplicationServices.GetRequiredService<DiagnosticListener>();
app.Run(context =>
{
return context.Response.WriteAsync("Hello World");
});
});
var server = new TestServer(builder);
var listener = new TestDiagnosticListener();
diagnosticListener.SubscribeWithAdapter(listener);
var result = await server.CreateClient().GetStringAsync("/path");
// This ensures that all diagnostics are completely written to the diagnostic listener
Thread.Sleep(1000);
Assert.Equal("Hello World", result);
Assert.NotNull(listener.BeginRequest?.HttpContext);
Assert.NotNull(listener.EndRequest?.HttpContext);
Assert.Null(listener.UnhandledException);
}
[Fact]
public async Task ExceptionDiagnosticAvailable()
{
DiagnosticListener diagnosticListener = null;
var builder = new WebHostBuilder().Configure(app =>
{
diagnosticListener = app.ApplicationServices.GetRequiredService<DiagnosticListener>();
app.Run(context =>
{
throw new Exception("Test exception");
});
});
var server = new TestServer(builder);
var listener = new TestDiagnosticListener();
diagnosticListener.SubscribeWithAdapter(listener);
await Assert.ThrowsAsync<Exception>(() => server.CreateClient().GetAsync("/path"));
// This ensures that all diagnostics are completely written to the diagnostic listener
Thread.Sleep(1000);
Assert.NotNull(listener.BeginRequest?.HttpContext);
Assert.Null(listener.EndRequest?.HttpContext);
Assert.NotNull(listener.UnhandledException?.HttpContext);
Assert.NotNull(listener.UnhandledException?.Exception);
}
[Theory]
[InlineData("http://localhost:12345")]
[InlineData("http://localhost:12345/")]
[InlineData("http://localhost:12345/hellohellohello")]
[InlineData("/isthereanybodyinthere?")]
public async Task ManuallySetHostWinsOverInferredHostFromRequestUri(string uri)
{
RequestDelegate appDelegate = ctx =>
ctx.Response.WriteAsync(ctx.Request.Headers[HeaderNames.Host]);
var builder = new WebHostBuilder().Configure(app => app.Run(appDelegate));
var server = new TestServer(builder);
var client = server.CreateClient();
var request = new HttpRequestMessage(HttpMethod.Get, uri);
request.Headers.Host = "otherhost:5678";
var response = await client.SendAsync(request);
var responseBody = await response.Content.ReadAsStringAsync();
Assert.Equal("otherhost:5678", responseBody);
}
private class ThrowOnDisposeStream : MemoryStream
{
protected override void Dispose(bool disposing)
{
throw new InvalidOperationException("Dispose should not happen!");
}
public override ValueTask DisposeAsync()
{
throw new InvalidOperationException("DisposeAsync should not happen!");
}
}
public class TestDiagnosticListener
{
public class OnBeginRequestEventData
{
public IProxyHttpContext HttpContext { get; set; }
}
public OnBeginRequestEventData BeginRequest { get; set; }
[DiagnosticName("Microsoft.AspNetCore.Hosting.BeginRequest")]
public virtual void OnBeginRequest(IProxyHttpContext httpContext)
{
BeginRequest = new OnBeginRequestEventData()
{
HttpContext = httpContext,
};
}
public class OnEndRequestEventData
{
public IProxyHttpContext HttpContext { get; set; }
}
public OnEndRequestEventData EndRequest { get; set; }
[DiagnosticName("Microsoft.AspNetCore.Hosting.EndRequest")]
public virtual void OnEndRequest(IProxyHttpContext httpContext)
{
EndRequest = new OnEndRequestEventData()
{
HttpContext = httpContext,
};
}
public class OnUnhandledExceptionEventData
{
public IProxyHttpContext HttpContext { get; set; }
public IProxyException Exception { get; set; }
}
public OnUnhandledExceptionEventData UnhandledException { get; set; }
[DiagnosticName("Microsoft.AspNetCore.Hosting.UnhandledException")]
public virtual void OnUnhandledException(IProxyHttpContext httpContext, IProxyException exception)
{
UnhandledException = new OnUnhandledExceptionEventData()
{
HttpContext = httpContext,
Exception = exception,
};
}
}
public interface IProxyHttpContext
{
}
public interface IProxyException
{
}
public class Startup
{
public void Configure(IApplicationBuilder builder)
{
builder.Run(ctx => ctx.Response.WriteAsync("Startup"));
}
}
public class SimpleService
{
public SimpleService()
{
}
public string Message { get; set; }
}
public class TestStartup
{
public void ConfigureServices(IServiceCollection services)
{
services.AddSingleton<SimpleService>();
}
public void ConfigureFooServices(IServiceCollection services)
{
}
public void Configure(IApplicationBuilder app)
{
app.Run(context =>
{
var service = app.ApplicationServices.GetRequiredService<SimpleService>();
return context.Response.WriteAsync("FoundService:" + (service != null));
});
}
public void ConfigureFoo(IApplicationBuilder app)
{
app.Run(context =>
{
var service = app.ApplicationServices.GetService<SimpleService>();
return context.Response.WriteAsync("FoundFoo:" + (service != null));
});
}
}
}
}