arrow-cast/benches/parse_timestamp.rs

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// to you under the Apache License, Version 2.0 (the
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//
//   http://www.apache.org/licenses/LICENSE-2.0
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use arrow_cast::parse::string_to_timestamp_nanos;
use criterion::*;

fn criterion_benchmark(c: &mut Criterion) {
    let timestamps = [
        "2020-09-08",
        "2020-09-08T13:42:29",
        "2020-09-08T13:42:29.190",
        "2020-09-08T13:42:29.190855",
        "2020-09-08T13:42:29.190855999",
        "2020-09-08T13:42:29+00:00",
        "2020-09-08T13:42:29.190+00:00",
        "2020-09-08T13:42:29.190855+00:00",
        "2020-09-08T13:42:29.190855999-05:00",
        "2020-09-08T13:42:29.190855Z",
    ];

    for timestamp in timestamps {
        let t = black_box(timestamp);
        c.bench_function(t, |b| {
            b.iter(|| string_to_timestamp_nanos(t).unwrap());
        });
    }
}

criterion_group!(benches, criterion_benchmark);
criterion_main!(benches);