Refactor for testing.

benches/image.rs

@@ -0,0 +1,26 @@
+use criterion::{black_box, criterion_group, criterion_main, Criterion};
+
+use image::imageops::FilterType;
+
+use photosync::library::load_image;
+use photosync::library::resize;
+
+pub fn criterion_benchmark(c: &mut Criterion) {
+    const TEST_IMAGE_PATH: &'static str = "testdata/image.jpg";
+    let img = load_image(TEST_IMAGE_PATH).expect("failed to load test image");
+    c.bench_function("Load image", |b| {
+        b.iter(|| black_box(load_image(TEST_IMAGE_PATH)))
+    });
+    c.bench_function("Resize image full Nearest", |b| {
+        b.iter(|| black_box(resize(&img, (None, None), FilterType::Nearest)))
+    });
+    c.bench_function("Resize image full CatmullRom", |b| {
+        b.iter(|| black_box(resize(&img, (None, None), FilterType::CatmullRom)))
+    });
+    c.bench_function("Resize image full Lanczos3", |b| {
+        b.iter(|| black_box(resize(&img, (None, None), FilterType::Lanczos3)))
+    });
+}
+
+criterion_group!(benches, criterion_benchmark);
+criterion_main!(benches);