DD.WellWorkover.Cloud/AsbCloudWebApi.Tests/IntegrationTests/TestWebApplicationFactory.cs

using System.Linq;
using System.Threading.Tasks;
using AsbCloudDb.Model;
using Microsoft.AspNetCore.Hosting;
using Microsoft.AspNetCore.Mvc.Testing;
using Microsoft.EntityFrameworkCore;
using Microsoft.Extensions.DependencyInjection;
using Testcontainers.PostgreSql;
using Xunit;

namespace AsbCloudWebApi.Tests.IntegrationTests;

public class TestWebApplicationFactory : WebApplicationFactory<Startup>,
	IAsyncLifetime
{
	private readonly PostgreSqlContainer _dbContainer = new PostgreSqlBuilder()
		.WithImage("timescale/timescaledb:latest-pg15")
		.WithDatabase("AsbCloud")
		.WithUsername("postgres")
		.WithPassword("postgres")
		.Build();

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

			if (descriptor is not null)
				services.Remove(descriptor);
			
			services.AddDbContext<AsbCloudDbContext>(options =>
				options.UseNpgsql(_dbContainer.GetConnectionString()));
		});
	}

	public Task InitializeAsync()
	{
		return _dbContainer.StartAsync();
	}

	public new Task DisposeAsync()
	{
		return _dbContainer.StopAsync();
	}
}