C# run testcontainers and run some commands on them

 

using DotNet.Testcontainers.Builders;
using Xunit.Abstractions;
using IContainer = DotNet.Testcontainers.Containers.IContainer;

namespace TestingWithContainers;

public class CustomContainerTest(ITestOutputHelper testOutputHelper) : IAsyncLifetime
{
    private IContainer[] _container;

    public async Task InitializeAsync()
    {
        _container =
        [
            ContainerBuildForTest("mcr.microsoft.com/mssql/rhel/server:2019-latest"), // redhat
            ContainerBuildForTest("mcr.microsoft.com/mssql/rhel/server:latest"),
            ContainerBuildForTest("mcr.microsoft.com/mssql/server:2019-latest"), // ubuntu
            ContainerBuildForTest("mcr.microsoft.com/mssql/server:latest"),
        ];

        foreach (var container in _container)
        {
            try
            {
                testOutputHelper.WriteLine($"Starting container with image: {container.Image.FullName}");
                await container.StartAsync();
                testOutputHelper.WriteLine($"Started container with ID: {container.Id}");
            }
            catch (Exception ex)
            {
                testOutputHelper.WriteLine($"Failed to start container with image {container.Image}: {ex.Message}");
                testOutputHelper.WriteLine($"Stack Trace: {ex.StackTrace}");
            }
        }
    }

    private static IContainer ContainerBuildForTest(string imageName)
    {
        return new ContainerBuilder()
            .WithImage(imageName)
            // .WithWaitStrategy(Wait.ForUnixContainer().UntilCommandIsCompleted("uname"))
            .Build();
    }

    public async Task DisposeAsync()
    {
        foreach (var container in _container)
        {
            await container.DisposeAsync();
        }
    }

    [Fact]
    public void Run_Command()
    {
        Parallel.For(0, _container.Length, index =>
        {
            var cmd = "cat /etc/issue";
            var execAsync = _container[index].ExecAsync(cmd.Split(" "), default).Result.Stdout;
            testOutputHelper.WriteLine(execAsync);
            // Assert.Contains("Linux", execAsync);
        });
    }
}