1 files changed, 69 insertions, 0 deletions
diff --git a/helix-term/tests/integration/write.rs b/helix-term/tests/integration/write.rs
new file mode 100644
index 00000000..47e56288
--- /dev/null
+++ b/helix-term/tests/integration/write.rs
@@ -0,0 +1,69 @@
+use std::{
+    io::{Read, Write},
+    ops::RangeInclusive,
+};
+
+use helix_term::application::Application;
+
+use super::*;
+
+#[tokio::test]
+async fn test_write() -> anyhow::Result<()> {
+    let mut file = tempfile::NamedTempFile::new().unwrap();
+
+    test_key_sequence(
+        &mut Application::new(
+            Args {
+                files: vec![(file.path().to_path_buf(), Position::default())],
+                ..Default::default()
+            },
+            Config::default(),
+        )?,
+        "ii can eat glass, it will not hurt me<ret><esc>:w<ret>",
+        None,
+    )
+    .await?;
+
+    file.as_file_mut().flush()?;
+    file.as_file_mut().sync_all()?;
+
+    let mut file_content = String::new();
+    file.as_file_mut().read_to_string(&mut file_content)?;
+    assert_eq!("i can eat glass, it will not hurt me\n", file_content);
+
+    Ok(())
+}
+
+#[tokio::test]
+async fn test_write_concurrent() -> anyhow::Result<()> {
+    let mut file = tempfile::NamedTempFile::new().unwrap();
+    let mut command = String::new();
+    const RANGE: RangeInclusive<i32> = 1..=1000;
+
+    for i in RANGE {
+        let cmd = format!("%c{}<esc>:w<ret>", i);
+        command.push_str(&cmd);
+    }
+
+    test_key_sequence(
+        &mut Application::new(
+            Args {
+                files: vec![(file.path().to_path_buf(), Position::default())],
+                ..Default::default()
+            },
+            Config::default(),
+        )?,
+        &command,
+        None,
+    )
+    .await?;
+
+    file.as_file_mut().flush()?;
+    file.as_file_mut().sync_all()?;
+
+    let mut file_content = String::new();
+    file.as_file_mut().read_to_string(&mut file_content)?;
+    assert_eq!(RANGE.end().to_string(), file_content);
+
+    Ok(())
+}