include rendering in fuzzing tests

bench/src/lib.rs

@@ -29,6 +29,7 @@ pub struct DummyBackend {
 }
 
 impl Default for DummyBackend {
+    #[inline]
     fn default() -> Self {
         Self {
             width: 40,
@@ -39,6 +40,7 @@ impl Default for DummyBackend {
 }
 
 impl Backend for DummyBackend {
+    #[inline]
     fn draw<'a, I>(&mut self, _content: I) -> Result<(), io::Error>
     where
         I: Iterator<Item = (u16, u16, &'a Cell)>,
@@ -46,27 +48,33 @@ impl Backend for DummyBackend {
         Ok(())
     }
 
+    #[inline]
     fn hide_cursor(&mut self) -> Result<(), io::Error> {
         Ok(())
     }
 
+    #[inline]
     fn show_cursor(&mut self) -> Result<(), io::Error> {
         Ok(())
     }
 
+    #[inline]
     fn get_cursor(&mut self) -> Result<(u16, u16), io::Error> {
         Ok(self.cursor)
     }
 
+    #[inline]
     fn set_cursor(&mut self, x: u16, y: u16) -> Result<(), io::Error> {
         self.cursor = (x, y);
         Ok(())
     }
 
+    #[inline]
     fn clear(&mut self) -> Result<(), io::Error> {
         Ok(())
     }
 
+    #[inline]
     fn size(&self) -> Result<Rect, io::Error> {
         Ok(Rect {
             x: 0,
@@ -76,11 +84,13 @@ impl Backend for DummyBackend {
         })
     }
 
+    #[inline]
     fn flush(&mut self) -> Result<(), io::Error> {
         Ok(())
     }
 }
 
+#[inline]
 pub fn dummy_terminal() -> Terminal<DummyBackend> {
     Terminal::new(DummyBackend::default()).unwrap()
 }
@@ -90,6 +100,7 @@ pub trait TerminalExt {
 }
 
 impl TerminalExt for Terminal<DummyBackend> {
+    #[inline]
     fn draw_textarea(&mut self, textarea: &TextArea<'_>) {
         self.draw(|f| f.render_widget(textarea.widget(), f.size()))
             .unwrap();

fuzz/Cargo.lock

@@ -289,6 +289,14 @@ dependencies = [
  "tui",
 ]
 
+[[package]]
+name = "tui-textarea-bench"
+version = "0.0.0"
+dependencies = [
+ "tui",
+ "tui-textarea",
+]
+
 [[package]]
 name = "tui-textarea-fuzz"
 version = "0.0.0"
@@ -296,6 +304,7 @@ dependencies = [
  "arbitrary",
  "libfuzzer-sys",
  "tui-textarea",
+ "tui-textarea-bench",
 ]
 
 [[package]]

fuzz/Cargo.toml

@@ -12,6 +12,7 @@ cargo-fuzz = true
 libfuzzer-sys = "0.4"
 arbitrary = "1"
 tui-textarea = { path = "..", features = ["search", "arbitrary"] }
+tui-textarea-bench = { path = "../bench" }
 
 # Prevent this from interfering with workspaces
 [workspace]

fuzz/fuzz_targets/edit.rs

@@ -5,17 +5,19 @@ use libfuzzer_sys::fuzz_target;
 use std::iter;
 use std::str;
 use tui_textarea::{Input, TextArea};
+use tui_textarea_bench::{dummy_terminal, TerminalExt};
 
 fn fuzz(data: &[u8]) -> Result<()> {
-    let mut u = Unstructured::new(data);
-    let inputs: Vec<_> = iter::repeat_with(|| Input::arbitrary(&mut u))
+    let mut term = dummy_terminal();
+    let mut data = Unstructured::new(data);
+    let inputs: Vec<_> = iter::repeat_with(|| Input::arbitrary(&mut data))
         .take(100)
         .collect::<Result<_>>()?;
-    let text = <&str>::arbitrary(&mut u)?;
+    let text = <&str>::arbitrary(&mut data)?;
     let mut textarea = TextArea::from(text.lines());
     for input in inputs {
         textarea.input(input);
-        let _ = textarea.widget();
+        term.draw_textarea(&mut textarea);
     }
     Ok(())
 }