Support automated UX testing

Cargo.toml

@@ -36,6 +36,7 @@ unicode-segmentation = "1.9.0"
 unicode-width = "0.1.9"
 
 [dev-dependencies]
+alacritty-test = { git = "https://github.com/YizhePKU/alacritty-test.git", rev = "6c4df50" }
 gethostname = "0.4.0"
 pretty_assertions = "1.4.0"
 rstest = { version = "0.18.0", default-features = false }

src/bin/testbin.rs

@@ -0,0 +1,25 @@
+//! Test binary for UX testing.
+
+use reedline::{DefaultPrompt, DefaultPromptSegment, Reedline, Signal};
+use std::io;
+
+fn main() -> io::Result<()> {
+    let mut line_editor = Reedline::create();
+    let prompt = DefaultPrompt::new(
+        DefaultPromptSegment::Basic("Reedline".to_string()),
+        DefaultPromptSegment::Empty,
+    );
+
+    loop {
+        let sig = line_editor.read_line(&prompt)?;
+        match sig {
+            Signal::Success(buffer) => {
+                println!("We processed: {buffer}");
+            }
+            Signal::CtrlD | Signal::CtrlC => {
+                println!("\nAborted!");
+                break Ok(());
+            }
+        }
+    }
+}