// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
 
using Microsoft.Extensions.DependencyInjection;
using Xunit;
 
namespace Microsoft.Extensions.ServiceDiscovery.Yarp.Tests;
 
#pragma warning disable IDE0200
 
public class YarpServiceDiscoveryPublicApiTests
{
    [Fact]
    public void AddServiceDiscoveryDestinationResolverShouldThrowWhenBuilderIsNull()
    {
        IReverseProxyBuilder builder = null!;
 
        var action = () => builder.AddServiceDiscoveryDestinationResolver();
 
        var exception = Assert.Throws<ArgumentNullException>(action);
        Assert.Equal(nameof(builder), exception.ParamName);
    }
 
    [Fact]
    public void AddHttpForwarderWithServiceDiscoveryShouldThrowWhenServicesIsNull()
    {
        IServiceCollection services = null!;
 
        var action = () => services.AddHttpForwarderWithServiceDiscovery();
 
        var exception = Assert.Throws<ArgumentNullException>(action);
        Assert.Equal(nameof(services), exception.ParamName);
    }
 
    [Fact]
    public void AddServiceDiscoveryForwarderFactoryShouldThrowWhenServicesIsNull()
    {
        IServiceCollection services = null!;
 
        var action = () => services.AddServiceDiscoveryForwarderFactory();
 
        var exception = Assert.Throws<ArgumentNullException>(action);
        Assert.Equal(nameof(services), exception.ParamName);
    }
}