mirror of https://github.com/rust-lang/rust
39 lines
868 B
Rust
39 lines
868 B
Rust
//@ run-pass
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//@ ignore-wasm32 no processes
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//@ ignore-sgx no processes
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use std::env::args;
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use std::process::Command;
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fn assert_reverse_iterator_for_program_arguments(program_name: &str) {
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let args: Vec<_> = args().rev().collect();
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assert!(args.len() == 4);
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assert_eq!(args[0], "c");
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assert_eq!(args[1], "b");
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assert_eq!(args[2], "a");
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assert_eq!(args[3], program_name);
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println!("passed");
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}
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fn main() {
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let mut args = args();
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let me = args.next().unwrap();
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if let Some(_) = args.next() {
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assert_reverse_iterator_for_program_arguments(&me);
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return
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}
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let output = Command::new(&me)
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.arg("a")
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.arg("b")
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.arg("c")
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.output()
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.unwrap();
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assert!(output.status.success());
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assert!(output.stderr.is_empty());
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assert_eq!(output.stdout, b"passed\n");
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}
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