servo/tests/unit/profile/time.rs

/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

use ipc_channel::ipc;
use profile::time;
use profile_traits::time::ProfilerMsg;

#[test]
fn time_profiler_smoke_test() {
    let chan = time::Profiler::create(&None, None);
    assert!(true, "Can create the profiler thread");

    let (ipcchan, _ipcport) = ipc::channel().unwrap();
    chan.send(ProfilerMsg::Exit(ipcchan));
    assert!(true, "Can tell the profiler thread to exit");
}

#[test]
fn time_profiler_stats_test() {
    let even_data = vec![1.234, 3.24567, 3.54578, 5.0, 5.324, 7.345,
                         9.2345, 10.2342345, 13.2599, 15.0];
    let (even_mean, even_median, even_min, even_max) = time::Profiler::get_statistics(&even_data);

    assert_eq!(7.34230845, even_mean);
    assert_eq!(7.345, even_median);
    assert_eq!(1.234, even_min);
    assert_eq!(15.0, even_max);

    let odd_data = vec![1.234, 3.24567, 3.54578, 5.0, 5.324, 7.345,
                        9.2345, 10.2342345, 13.2599];
    let (odd_mean, odd_median, odd_min, odd_max) = time::Profiler::get_statistics(&odd_data);

    assert_eq!(6.491453833333334, odd_mean);
    assert_eq!(5.324, odd_median);
    assert_eq!(1.234, odd_min);
    assert_eq!(13.2599, odd_max);
}

#[cfg(debug_assertions)]
#[test]
#[should_panic]
fn time_profiler_unsorted_stats_test() {
    let unsorted_data = vec![5.0, 7.5, 1.0, 8.9];
    time::Profiler::get_statistics(&unsorted_data);
}

#[cfg(debug_assertions)]
#[test]
#[should_panic]
fn time_profiler_data_len_zero() {
    let zero_data = vec![];
    time::Profiler::get_statistics(&zero_data);
}