// spell-checker:ignore dont
use crate::common::util::*;

use std::time::{Duration, Instant};

#[test]
fn test_invalid_time_interval() {
    new_ucmd!()
        .arg("xyz")
        .fails()
        .usage_error("invalid time interval 'xyz'");
    new_ucmd!()
        .args(&["--", "-1"])
        .fails()
        .usage_error("invalid time interval '-1'");
}

#[test]
fn test_sleep_no_suffix() {
    let millis_100 = Duration::from_millis(100);
    let before_test = Instant::now();

    new_ucmd!().args(&["0.1"]).succeeds().stdout_only("");

    let duration = before_test.elapsed();
    assert!(duration >= millis_100);
}

#[test]
fn test_sleep_s_suffix() {
    let millis_100 = Duration::from_millis(100);
    let before_test = Instant::now();

    new_ucmd!().args(&["0.1s"]).succeeds().stdout_only("");

    let duration = before_test.elapsed();
    assert!(duration >= millis_100);
}

#[test]
fn test_sleep_m_suffix() {
    let millis_600 = Duration::from_millis(600);
    let before_test = Instant::now();

    new_ucmd!().args(&["0.01m"]).succeeds().stdout_only("");

    let duration = before_test.elapsed();
    assert!(duration >= millis_600);
}

#[test]
fn test_sleep_h_suffix() {
    let millis_360 = Duration::from_millis(360);
    let before_test = Instant::now();

    new_ucmd!().args(&["0.0001h"]).succeeds().stdout_only("");

    let duration = before_test.elapsed();
    assert!(duration >= millis_360);
}

#[test]
fn test_sleep_negative_duration() {
    new_ucmd!().args(&["-1"]).fails();
    new_ucmd!().args(&["-1s"]).fails();
    new_ucmd!().args(&["-1m"]).fails();
    new_ucmd!().args(&["-1h"]).fails();
    new_ucmd!().args(&["-1d"]).fails();
}

#[test]
fn test_sleep_zero_duration() {
    new_ucmd!().args(&["0"]).succeeds().stdout_only("");
    new_ucmd!().args(&["0s"]).succeeds().stdout_only("");
    new_ucmd!().args(&["0m"]).succeeds().stdout_only("");
    new_ucmd!().args(&["0h"]).succeeds().stdout_only("");
    new_ucmd!().args(&["0d"]).succeeds().stdout_only("");
}

#[test]
fn test_sleep_no_argument() {
    new_ucmd!().fails().usage_error("missing operand");
}

#[test]
fn test_sleep_sum_duration_same_suffix() {
    let millis_200 = Duration::from_millis(100 + 100);
    let before_test = Instant::now();

    new_ucmd!()
        .args(&["0.1s", "0.1s"])
        .succeeds()
        .stdout_only("");

    let duration = before_test.elapsed();
    assert!(duration >= millis_200);
}

#[test]
fn test_sleep_sum_duration_different_suffix() {
    let millis_700 = Duration::from_millis(100 + 600);
    let before_test = Instant::now();

    new_ucmd!()
        .args(&["0.1s", "0.01m"])
        .succeeds()
        .stdout_only("");

    let duration = before_test.elapsed();
    assert!(duration >= millis_700);
}

#[test]
fn test_sleep_sum_duration_many() {
    let millis_900 = Duration::from_millis(100 + 100 + 300 + 400);
    let before_test = Instant::now();

    new_ucmd!()
        .args(&["0.1s", "0.1s", "0.3s", "0.4s"])
        .succeeds()
        .stdout_only("");

    let duration = before_test.elapsed();
    assert!(duration >= millis_900);
}

#[test]
fn test_sleep_wrong_time() {
    new_ucmd!().args(&["0.1s", "abc"]).fails();
}

// TODO These tests would obviously block for a very long time. We
// only want to verify that there is no error here, so we could just
// figure out a way to terminate the child process after a short
// period of time.

// #[test]
#[allow(dead_code)]
fn test_dont_overflow() {
    new_ucmd!()
        .arg("9223372036854775808d")
        .succeeds()
        .no_stderr()
        .no_stdout();
}

// #[test]
#[allow(dead_code)]
fn test_sum_overflow() {
    new_ucmd!()
        .args(&["100000000000000d", "100000000000000d", "100000000000000d"])
        .succeeds()
        .no_stderr()
        .no_stdout();
}

#[test]
fn test_negative_interval() {
    new_ucmd!()
        .args(&["--", "-1"])
        .fails()
        .usage_error("invalid time interval '-1'");
}