Improve bench mark suite

crates/editor/benches/editor_render.rs

@@ -1,5 +1,5 @@
 use criterion::{Bencher, BenchmarkId};
-use editor::{Editor, EditorMode, MultiBuffer};
+use editor::{Editor, EditorMode, MultiBuffer, actions::MoveDown};
 use gpui::{AppContext, Focusable as _, TestAppContext, TestDispatcher};
 use project::Project;
 use rand::{Rng as _, SeedableRng as _, rngs::StdRng};
@@ -7,11 +7,24 @@ use settings::SettingsStore;
 use ui::IntoElement;
 use util::RandomCharIter;
 
+fn editor_with_one_long_line(_bencher: &mut Bencher<'_>, args: &(String, TestAppContext)) {
+    let (text, cx) = args;
+    let mut cx = cx.clone();
+    let buffer = cx.update(|cx| MultiBuffer::build_simple(&text, cx));
+
+    let cx = cx.add_empty_window();
+    let _editor = cx.update(|window, cx| {
+        let editor = cx.new(|cx| Editor::new(EditorMode::full(), buffer, None, window, cx));
+        window.focus(&editor.focus_handle(cx));
+        editor
+    });
+}
+
 fn editor_render(bencher: &mut Bencher<'_>, cx: &TestAppContext) {
     let mut cx = cx.clone();
     let buffer = cx.update(|cx| {
         let mut rng = StdRng::seed_from_u64(1);
-        let text_len = rng.gen_range(1000..10000);
+        let text_len = rng.gen_range(10000..90000);
         if rng.r#gen() {
             let text = RandomCharIter::new(&mut rng)
                 .take(text_len)
@@ -31,6 +44,7 @@ fn editor_render(bencher: &mut Bencher<'_>, cx: &TestAppContext) {
 
     bencher.iter(|| {
         cx.update(|window, cx| {
+            editor.update(cx, |editor, cx| editor.move_down(&MoveDown, window, cx));
             let mut view = editor.clone().into_any_element();
             let _ = view.request_layout(window, cx);
             let _ = view.prepaint(window, cx);
@@ -64,6 +78,13 @@ pub fn benches() {
         &cx,
         editor_render,
     );
+
+    let text = String::from_iter(["char"; 100000]);
+    criterion.bench_with_input(
+        BenchmarkId::new("editor_with_one_long_line", "(String, TestAppContext )"),
+        &(text, cx),
+        editor_with_one_long_line,
+    );
 }
 
 fn main() {