.NET Core 5.0 TestServer

I have built a unit test project in .NET Core 5.0 to test my API's. I have created a test server using HostBuilder. In my unit testing class I am calling an API using

HttpClient client;

client = TestServer.GetTestClient(); in all methods. It' working and no issues.

But in couple of unit test methods when request goes to BL(Business logic level) I need to make a call to TestServer to get the token then the actual problem starts. I can't make a call using Httpclient without using TestServer.GetTestClient() because if I do that it says the hosting server have actively refused to connect. And I can't make a call using TestServer.GetTestClient() because it will be a cyclic dependency on main project.

Is there a way to call TestServer using only Httpclient without using TestServer.GetTestClient()?

Maybe this helps

using Microsoft.AspNetCore.DataProtection;
using Microsoft.AspNetCore.Hosting;
using Microsoft.AspNetCore.Mvc.Testing;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Hosting;
using Microsoft.VisualStudio.TestPlatform.TestHost;
using System;
using System.IO;
using System.Net.Http;
using Xunit;
public class CustomWebApplicationFactory : WebApplicationFactory
{
private IConfiguration _configuration;
protected override IHostBuilder CreateHostBuilder()
{
return Host.CreateDefaultBuilder()
.ConfigureWebHostDefaults(webBuilder =>
{
webBuilder.UseStartup()
.UseEnvironment("Development");
});
}
protected override void ConfigureWebHost(IWebHostBuilder builder)
{
builder.ConfigureAppConfiguration(config =>
{
_configuration = new ConfigurationBuilder()
.AddJsonFile("appsettings.integration.json")
.Build();
config.AddConfiguration(_configuration);
});
builder.ConfigureServices(services =>
{
services.AddDataProtection()
.PersistKeysToFileSystem(new DirectoryInfo("/DataprotectionKeys"))
.SetApplicationName("MyApp");
});
}
protected override void ConfigureClient(HttpClient client)
{
client.DefaultRequestHeaders.Add("X-API-KEY", _configuration["ApiKey"]);
client.DefaultRequestVersion = new Version(2, 0);
base.ConfigureClient(client);
}
}

using System;
using System.IO;
using System.Linq;
using System.Net.Http;
using System.Threading.Tasks;
using Xunit;
public class MyApiControllerTests : IClassFixture
{
private readonly HttpClient _client;
public InboundControllerTests(CustomWebApplicationFactory factory)
{
_client = factory.CreateClient();
_client.BaseAddress = new Uri("http://localhost/api/");
}
[Fact]
public async Task Get()
{
var response = await _client.GetAsync("MyApiEndpoint/");
response.EnsureSuccessStatusCode();
var content = await response.Content.ReadAsStringAsync();
Assert.NotNull(content);
}
}

1 Reply

Know the answer? Post it — somebody with the same question will find it here.

Mario Scheeren5y ago
Maybe this helps
using Microsoft.AspNetCore.DataProtection;
using Microsoft.AspNetCore.Hosting;
using Microsoft.AspNetCore.Mvc.Testing;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Hosting;
using Microsoft.VisualStudio.TestPlatform.TestHost;
using System;
using System.IO;
using System.Net.Http;
using Xunit;

public class CustomWebApplicationFactory : WebApplicationFactory
{
    private IConfiguration _configuration;

    protected override IHostBuilder CreateHostBuilder()
    {
        return Host.CreateDefaultBuilder()
           .ConfigureWebHostDefaults(webBuilder =>
           {
               webBuilder.UseStartup()
                .UseEnvironment("Development");
           });
    }

    protected override void ConfigureWebHost(IWebHostBuilder builder)
    {
        builder.ConfigureAppConfiguration(config =>
        {
            _configuration = new ConfigurationBuilder()
                .AddJsonFile("appsettings.integration.json")
                .Build();

            config.AddConfiguration(_configuration);
        });

        builder.ConfigureServices(services =>
        {
            services.AddDataProtection()
                .PersistKeysToFileSystem(new DirectoryInfo("/DataprotectionKeys"))
                .SetApplicationName("MyApp");
        });
    }

    protected override void ConfigureClient(HttpClient client)
    {
        client.DefaultRequestHeaders.Add("X-API-KEY", _configuration["ApiKey"]);
        client.DefaultRequestVersion = new Version(2, 0);
        base.ConfigureClient(client);
    }
}
using System;
using System.IO;
using System.Linq;
using System.Net.Http;
using System.Threading.Tasks;
using Xunit;

public class MyApiControllerTests : IClassFixture
    {
        private readonly HttpClient _client;

        public InboundControllerTests(CustomWebApplicationFactory factory)
        {
            _client = factory.CreateClient();
            _client.BaseAddress = new Uri("http://localhost/api/");
        }

        [Fact]
        public async Task Get()
        {
            var response = await _client.GetAsync("MyApiEndpoint/");
            response.EnsureSuccessStatusCode();

            var content = await response.Content.ReadAsStringAsync();
            Assert.NotNull(content);
        }
}
0