我正在尝试在测试中设置我的应用程序，并在Startup的Configure方法中使用context.Database.EnsureCreated()，期望Sqlite文件出现在Test的二进制文件夹中。
这是我的代码：
using Microsoft.AspNetCore.Mvc.Testing;
using System.Threading.Tasks;
using Xunit;
namespace MyApp.Tests
{
public class UnitTest1 : IClassFixture<CustomWebApplicationFactory<FakeStartup>>
{
private readonly CustomWebApplicationFactory<FakeStartup> _factory;
public UnitTest1(CustomWebApplicationFactory<FakeStartup> factory)
{
_factory = factory;
}
[Fact]
public async Task Test1()
{
// Arrange
var client = _factory.CreateClient();
// Act
var response = await client.GetAsync("https://localhost:5001/");
// Assert
response.EnsureSuccessStatusCode(); // Status Code 200-299
Assert.Equal("text/html; charset=utf-8", response.Content.Headers.ContentType.ToString());
}
}
}
正在使用WebAppFactory的内容：
using MyApp.Tests;
using Microsoft.AspNetCore.Hosting;
using Microsoft.AspNetCore.Mvc.Testing;
public class CustomWebApplicationFactory<TStartup> : WebApplicationFactory<TStartup> where TStartup : class
{
protected override void ConfigureWebHost(IWebHostBuilder builder)
{
builder.UseStartup<FakeStartup>();
}
}
假设FakeStartup是：
using MyApp.Database;
using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Hosting;
using Microsoft.EntityFrameworkCore;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;
using System;
namespace MyApp.Tests
{
public class FakeStartup
{
public FakeStartup(IConfiguration configuration)
{
Configuration = configuration;
}
public IConfiguration Configuration { get; }
public void ConfigureServices(IServiceCollection services)
{
services.AddControllers();
services.AddDbContext<Context>(x => x.UseSqlite($"filename={Guid.NewGuid():N}.db"));
services.AddSwaggerGen(c =>
{
c.SwaggerDoc("v1", new OpenApiInfo { Title = "Test API", Version = "v1" });
});
}
}
public static void Configure(IApplicationBuilder app, IWebHostEnvironment env, Context context)
{
context.Database.EnsureDeleted();
context.Database.EnsureCreated();
app.UseSwagger();
app.UseSwaggerUI(c =>
{
c.SwaggerEndpoint("/swagger/v1/swagger.json", "Test API v1");
c.RoutePrefix = string.Empty;
});
if (env.IsDevelopment())
{
app.UseDeveloperExceptionPage();
}
app.UseForwardedHeaders(new ForwardedHeadersOptions
{
ForwardedHeaders = ForwardedHeaders.XForwardedFor | ForwardedHeaders.XForwardedProto
});
app.UseAuthentication();
app.UseCors(x =>
{
x.AllowAnyOrigin();
x.AllowAnyMethod();
x.AllowAnyHeader();
});
app.UseHttpsRedirection();
app.UseRouting();
app.UseAuthorization();
app.UseEndpoints(endpoints =>
{
endpoints.MapControllers();
});
}
}
以下是问题：
Message:
System.InvalidOperationException : No method 'public static IHostBuilder CreateHostBuilder(string[] args)' or 'public static IWebHostBuilder CreateWebHostBuilder(string[] args)' found on 'AutoGeneratedProgram'. Alternatively, WebApplicationFactory`1 can be extended and 'CreateHostBuilder' or 'CreateWebHostBuilder' can be overridden to provide your own instance.
Stack Trace:
WebApplicationFactory`1.CreateWebHostBuilder()
WebApplicationFactory`1.EnsureServer()
WebApplicationFactory`1.CreateDefaultClient(DelegatingHandler[] handlers)
WebApplicationFactory`1.CreateDefaultClient(Uri baseAddress, DelegatingHandler[] handlers)
WebApplicationFactory`1.CreateClient(WebApplicationFactoryClientOptions options)
WebApplicationFactory`1.CreateClient()
UnitTest1.Test1() line 20
--- End of stack trace from previous location where exception was thrown
这可能是什么原因造成的？提前致谢。