Add :character-info command (#4000)

1 files changed, 58 insertions, 0 deletions

diff --git a/helix-term/tests/test/commands.rs b/helix-term/tests/test/commands.rs
index 6e7275f5..da2e020e 100644
--- a/helix-term/tests/test/commands.rs
+++ b/helix-term/tests/test/commands.rs
@@ -354,3 +354,61 @@ async fn test_extend_line() -> anyhow::Result<()> {
 
     Ok(())
 }
+
+#[tokio::test(flavor = "multi_thread")]
+async fn test_character_info() -> anyhow::Result<()> {
+    // UTF-8, single byte
+    test_key_sequence(
+        &mut helpers::AppBuilder::new().build()?,
+        Some("ih<esc>h:char<ret>"),
+        Some(&|app| {
+            assert_eq!(
+                r#""h" (U+0068) Dec 104 Hex 68"#,
+                app.editor.get_status().unwrap().0
+            );
+        }),
+        false,
+    )
+    .await?;
+
+    // UTF-8, multi-byte
+    test_key_sequence(
+        &mut helpers::AppBuilder::new().build()?,
+        Some("ië<esc>h:char<ret>"),
+        Some(&|app| {
+            assert_eq!(
+                r#""ë" (U+0065 U+0308) Hex 65 + cc 88"#,
+                app.editor.get_status().unwrap().0
+            );
+        }),
+        false,
+    )
+    .await?;
+
+    // Multiple characters displayed as one, escaped characters
+    test_key_sequence(
+        &mut helpers::AppBuilder::new().build()?,
+        Some(":line<minus>ending crlf<ret>:char<ret>"),
+        Some(&|app| {
+            assert_eq!(
+                r#""\r\n" (U+000d U+000a) Hex 0d + 0a"#,
+                app.editor.get_status().unwrap().0
+            );
+        }),
+        false,
+    )
+    .await?;
+
+    // Non-UTF-8
+    test_key_sequence(
+        &mut helpers::AppBuilder::new().build()?,
+        Some(":encoding ascii<ret>ih<esc>h:char<ret>"),
+        Some(&|app| {
+            assert_eq!(r#""h" Dec 104 Hex 68"#, app.editor.get_status().unwrap().0);
+        }),
+        false,
+    )
+    .await?;
+
+    Ok(())
+}