Is there a crate to test example commands in clap command/subcommand documentation?

[jpmckinney]

I'm looking for something like https://docs.rs/trycmd/latest/trycmd/ that extracts test cases from the documentation for a clap command/subcommand.

For example:

enum Commands {
    /// Counts from START to STOP.
    ///
    /// $ mycli counter 1 3
    /// 1
    /// 2
    /// 3
    Counter {
        start: usize,
        stop: usize,
    }
}

And then it'll run mycli counter 1 3 and compare stdout + stderr to:

1
2
3

[epage]

At the moment, trycmd only supported markdown and not code blocks.

Feel free to open an issue about that though it does introduce some complexity that I'm unsure if I want to handle and the use case seems a lot smaller, lowering the priority.

One alternative is to pull a markdown file into your doc comment