Initial work on writing benchmarks.

2018/Cargo.toml

@@ -9,3 +9,10 @@ clap = "2.32"
 regex = "1.1.0"
 chrono = "0.4.6"
 itertools = "0.7.11"
+
+[dev-dependencies]
+bencher = "0.1.5"
+
+[[bench]]
+name = "days"
+harness = false

2018/benches/days.rs

@@ -0,0 +1,49 @@
+extern crate aoc_2018;
+#[macro_use]
+extern crate bencher;
+
+use bencher::Bencher;
+
+use aoc_2018::get_impl;
+
+const INPUTS: &[&[u8]] = &[
+    include_bytes!("../inputs/01.txt"),
+    include_bytes!("../inputs/02.txt"),
+];
+
+fn test_part1(day: u32, bench: &mut Bencher) {
+    bench.iter(|| {
+        let input = INPUTS[day as usize - 1];
+        let mut instance = get_impl(day);
+        instance.part1(&mut input.as_ref())
+    })
+}
+
+fn test_part2(day: u32, bench: &mut Bencher) {
+    bench.iter(|| {
+        let input = INPUTS[day as usize - 1];
+        let mut instance = get_impl(day);
+        instance.part2(&mut input.as_ref())
+    })
+}
+
+fn day1_part1(bench: &mut Bencher) {
+    test_part1(1, bench)
+}
+
+fn day1_part2(bench: &mut Bencher) {
+    test_part2(1, bench)
+}
+
+fn day2_part1(bench: &mut Bencher) {
+    test_part1(2, bench)
+}
+
+fn day2_part2(bench: &mut Bencher) {
+    test_part2(2, bench)
+}
+
+benchmark_group!(day1, day1_part1, day1_part2);
+benchmark_group!(day2, day2_part1, day2_part2);
+
+benchmark_main!(day1, day2);