chore(benchmarks): replace criterion with divan in benchmarks

Author: ttys3

Cargo.toml

@@ -37,7 +37,7 @@ version = "0.11"
 optional = true
 
 [dev-dependencies]
-criterion = "0.5"
+divan = "0.1.17"
 
 [[example]]
 name = "rev_map"

benches/benchmark.rs

@@ -1,31 +1,26 @@
-#[macro_use]
-extern crate criterion;
-extern crate mime_guess2;
-
-use self::criterion::Criterion;
-
 use mime_guess2::from_ext;
 
 include!("../src/mime_types.rs");
 
-/// WARNING: this may take a while!
-fn bench_mime_str(c: &mut Criterion) {
-    c.bench_function("from_ext", |b| {
-        for (mime_ext, _) in MIME_TYPES {
-            b.iter(|| from_ext(mime_ext).first_raw());
-        }
-    });
+fn main() {
+    // Run registered benchmarks.
+    divan::main();
 }
 
-fn bench_mime_str_uppercase(c: &mut Criterion) {
-    c.bench_function("from_ext uppercased", |b| {
-        let uppercased = MIME_TYPES.into_iter().map(|(s, _)| s.to_uppercase());
-
-        for mime_ext in uppercased {
-            b.iter(|| from_ext(&mime_ext).first_raw());
-        }
-    });
+/// Benchmark `from_ext` with standard extensions.
+#[divan::bench]
+fn from_ext_benchmark() {
+    for (mime_ext, _) in MIME_TYPES {
+        divan::black_box(from_ext(mime_ext).first_raw());
+    }
 }
 
-criterion_group!(benches, bench_mime_str, bench_mime_str_uppercase);
-criterion_main!(benches);
+/// Benchmark `from_ext` with uppercased extensions.
+#[divan::bench]
+fn from_ext_uppercase_benchmark() {
+    let uppercased: Vec<_> = MIME_TYPES.iter().map(|(s, _)| s.to_uppercase()).collect();
+
+    for mime_ext in uppercased {
+        divan::black_box(from_ext(&mime_ext).first_raw());
+    }
+}