nushell/crates/nu-command/src/commands/prev.rs
Jonathan Turner 073e5727c6
Switch to "engine-p" (#3270)
* WIP

* WIP

* first builds

* Tests pass
2021-04-06 11:19:43 -05:00

43 lines
887 B
Rust

use crate::prelude::*;
use nu_errors::ShellError;
use nu_protocol::{CommandAction, ReturnSuccess, Signature};
use nu_engine::WholeStreamCommand;
pub struct Previous;
impl WholeStreamCommand for Previous {
fn name(&self) -> &str {
"p"
}
fn signature(&self) -> Signature {
Signature::build("p")
}
fn usage(&self) -> &str {
"Go to previous shell."
}
fn run(&self, args: CommandArgs) -> Result<OutputStream, ShellError> {
Ok(previous(args))
}
}
fn previous(_args: CommandArgs) -> OutputStream {
vec![Ok(ReturnSuccess::Action(CommandAction::PreviousShell))].into()
}
#[cfg(test)]
mod tests {
use super::Previous;
use super::ShellError;
#[test]
fn examples_work_as_expected() -> Result<(), ShellError> {
use crate::examples::test as test_examples;
test_examples(Previous {})
}
}