set up criterion

simpleinterpolation/Cargo.toml

@@ -11,3 +11,14 @@ readme = "README.md"
 license = "MIT OR Apache-2.0"
 
 [dependencies]
+
+[dev-dependencies]
+criterion = { version = "0.3", features = ["html_reports"] }
+
+[[bench]]
+name = "no_interpolation"
+harness = false
+
+[[bench]]
+name = "all_interpolation"
+harness = false

simpleinterpolation/benches/all_interpolation.rs

@@ -0,0 +1,17 @@
+use std::collections::HashMap;
+
+use criterion::{criterion_group, criterion_main, Criterion};
+use simpleinterpolation::Interpolation;
+
+pub fn criterion_benchmark(c: &mut Criterion) {
+    let interp = Interpolation::new("{interp}").unwrap();
+    let mut data = HashMap::new();
+    data.insert(
+        "interp".into(),
+        include_str!("very_long_uninterpolated.txt").into(),
+    );
+    c.bench_function("no interpolation", |b| b.iter(|| interp.render(&data)));
+}
+
+criterion_group!(benches, criterion_benchmark);
+criterion_main!(benches);

simpleinterpolation/benches/no_interpolation.rs

@@ -0,0 +1,15 @@
+use std::collections::HashMap;
+
+use criterion::{criterion_group, criterion_main, Criterion};
+use simpleinterpolation::Interpolation;
+
+pub fn criterion_benchmark(c: &mut Criterion) {
+    let interp = Interpolation::new(include_str!("very_long_uninterpolated.txt")).unwrap();
+    let empty_hashmap = HashMap::new();
+    c.bench_function("no interpolation", |b| {
+        b.iter(|| interp.render(&empty_hashmap))
+    });
+}
+
+criterion_group!(benches, criterion_benchmark);
+criterion_main!(benches);

simpleinterpolation/benches/very_long_uninterpolated.txt

@@ -0,0 +1 @@
+this is a very long test string, but it doesn't do any interpolation by default. We don't do interpolation here because we want to see how it performs in odd cases like this one, or ones where we're only interpolating a tiny bit of text, like for example a user's name.