persistence/Persistence.IntegrationTests/WebAppFactoryFixture.cs

using Microsoft.AspNetCore.Hosting;
using Microsoft.AspNetCore.Mvc.Testing;
using Microsoft.EntityFrameworkCore;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;
using Persistence.Database.Model;
using Persistence.Database.Postgres;
using Persistence.API;
using Refit;
using System.Text.Json;
using Persistence.Database.Postgres;
using System.Net.Http.Headers;
using Persistence.Client;
using Microsoft.Extensions.DependencyInjection.Extensions;

namespace Persistence.IntegrationTests;
public class WebAppFactoryFixture : WebApplicationFactory<Startup>
{
    private static readonly JsonSerializerOptions JsonSerializerOptions = new()
    {
        PropertyNamingPolicy = JsonNamingPolicy.CamelCase,
        PropertyNameCaseInsensitive = true,
        //Converters = { new ValidationResultConverter() }
    };

    private static readonly RefitSettings RefitSettings = new(new SystemTextJsonContentSerializer(JsonSerializerOptions));

    private readonly string connectionString;

    public WebAppFactoryFixture()
    {
        var configuration = new ConfigurationBuilder()
           .AddJsonFile("appsettings.Tests.json")
           .Build();

        var dbConnection = configuration.GetSection("DbConnection").Get<DbConnection>()!;
        connectionString = dbConnection.GetConnectionString();
    }

    protected override void ConfigureWebHost(IWebHostBuilder builder)
    {
        builder.ConfigureServices(services =>
        {
            var descriptor = services.SingleOrDefault(d => d.ServiceType == typeof(DbContextOptions<PersistenceDbContext>));

            if (descriptor != null)
                services.Remove(descriptor);

            services.AddDbContext<PersistenceDbContext>(options =>
               options.UseNpgsql(connectionString));

			services.RemoveAll<IHttpClientFactory>();
			services.AddSingleton<IHttpClientFactory>(provider =>
			{
				return new TestHttpClientFactory(this);
			});

			var serviceProvider = services.BuildServiceProvider();

            using var scope = serviceProvider.CreateScope();
            var scopedServices = scope.ServiceProvider;

            var dbContext = scopedServices.GetRequiredService<PersistenceDbContext>();
            dbContext.Database.EnsureCreatedAndMigrated();
            //dbContext.Deposits.AddRange(Data.Defaults.Deposits);
            dbContext.SaveChanges();
        });
    }
}