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/// A Redis DECR command.
use crate::cmd::Command;
use crate::frame::Frame;
use bytes::Bytes;
pub struct Decr {
key: String,
}
impl Decr {
/// Creates a new DECR command.
///
/// # Arguments
///
/// * `key` - The key to decrement
///
/// # Returns
///
/// A new DECR command
///
/// # Examples
///
/// ```ignore
/// let decr = Decr::new("mykey");
/// ```
pub fn new(key: &str) -> Self {
Self {
key: key.to_string(),
}
}
}
impl Command for Decr {
fn into_stream(self) -> Frame {
let mut frame: Frame = Frame::array();
frame
.push_frame_to_array(Frame::BulkString("DECR".into()))
.unwrap();
frame
.push_frame_to_array(Frame::BulkString(Bytes::from(self.key)))
.unwrap();
frame
}
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn test_decr() {
let decr = Decr::new("mykey");
let frame = decr.into_stream();
assert_eq!(
frame,
Frame::Array(vec![
Frame::BulkString("DECR".into()),
Frame::BulkString("mykey".into()),
])
)
}
}