Reading console output

[ArminOebb]

Hi! Would it be possible to implement the features, like in you Java library, to read the console output of the containers?

[HofmeisterAn]

Something like WithOutputConsumer?

testcontainers-dotnet/tests/Testcontainers.Tests/Unit/Containers/Unix/TestcontainersContainerTest.cs

Lines 293 to 328 in e6c6da5

	public async Task OutputConsumer()
	{
	// Given
	var unixTimeInMilliseconds = DateTimeOffset.UtcNow.ToUnixTimeMilliseconds().ToString(CultureInfo.InvariantCulture);
	using (var consumer = Consume.RedirectStdoutAndStderrToStream(new MemoryStream(), new MemoryStream()))
	{
	// When
	var testcontainersBuilder = new TestcontainersBuilder<TestcontainersContainer>()
	.WithImage("alpine")
	.WithEntrypoint("/bin/sh", "-c", $"printf \"{unixTimeInMilliseconds}\" | tee /dev/stderr && tail -f /dev/null")
	.WithOutputConsumer(consumer)
	.WithWaitStrategy(Wait.ForUnixContainer()
	.UntilMessageIsLogged(consumer.Stdout, unixTimeInMilliseconds)
	.UntilMessageIsLogged(consumer.Stderr, unixTimeInMilliseconds));
	await using (ITestcontainersContainer testcontainer = testcontainersBuilder.Build())
	{
	await testcontainer.StartAsync();
	}
	consumer.Stdout.Seek(0, SeekOrigin.Begin);
	consumer.Stderr.Seek(0, SeekOrigin.Begin);
	// Then
	using (var streamReader = new StreamReader(consumer.Stdout, leaveOpen: true))
	{
	Assert.Equal(unixTimeInMilliseconds, await streamReader.ReadToEndAsync());
	}
	using (var streamReader = new StreamReader(consumer.Stderr, leaveOpen: true))
	{
	Assert.Equal(unixTimeInMilliseconds, await streamReader.ReadToEndAsync());
	}
	}
	}

The equivalent of docker logs is not yet supported, but will be soon.

[ArminOebb]

Yes, I think that already helps me a lot, thank you. I was not aware of the Consume class.

[HofmeisterAn]

The Quickstart and this #438 might also help.