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//@ run-pass
//@ needs-subprocess
use std::env::args;
use std::process::Command;
fn assert_reverse_iterator_for_program_arguments(program_name: &str) {
let args: Vec<_> = args().rev().collect();
assert!(args.len() == 4);
assert_eq!(args[0], "c");
assert_eq!(args[1], "b");
assert_eq!(args[2], "a");
assert_eq!(args[3], program_name);
println!("passed");
}
fn main() {
let mut args = args();
let me = args.next().unwrap();
if let Some(_) = args.next() {
assert_reverse_iterator_for_program_arguments(&me);
return
}
let output = Command::new(&me)
.arg("a")
.arg("b")
.arg("c")
.output()
.unwrap();
assert!(output.status.success());
assert!(output.stderr.is_empty());
assert_eq!(output.stdout, b"passed\n");
}
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