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Integration test UTF8/16 file save
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Alexis-Lapierre committed Apr 23, 2023
1 parent 3c61d26 commit cd88d7b
Showing 1 changed file with 37 additions and 0 deletions.
37 changes: 37 additions & 0 deletions helix-term/tests/test/commands/write.rs
Original file line number Diff line number Diff line change
Expand Up @@ -407,3 +407,40 @@ async fn test_write_fail_new_path() -> anyhow::Result<()> {

Ok(())
}

#[tokio::test(flavor = "multi_thread")]
async fn test_write_utf_bom_file() -> anyhow::Result<()> {
// "ABC" with utf8 bom byte
const UTF8_FILE: [u8; 6] = [0xef, 0xbb, 0xbf, b'A', b'B', b'C'];

const UTF16LE_FILE: [u8; 8] = [0xff, 0xfe, b'A', 0x00, b'B', 0x00, b'C', 0x00];
const UTF16BE_FILE: [u8; 8] = [0xfe, 0xff, 0x00, b'A', 0x00, b'B', 0x00, b'C'];

open_and_close_file_content(&UTF8_FILE).await?;
open_and_close_file_content(&UTF16LE_FILE).await?;
open_and_close_file_content(&UTF16BE_FILE).await?;

Ok(())
}

async fn open_and_close_file_content(file_content: &[u8]) -> anyhow::Result<()> {
let mut file = tempfile::NamedTempFile::new()?;

file.as_file_mut().write_all(&file_content)?;

helpers::test_key_sequence(
&mut helpers::AppBuilder::new().build()?,
Some(&format!(":o {}<ret>:x<ret>", file.path().to_string_lossy())),
None,
true,
)
.await?;

file.rewind()?;
let mut new_file_content: Vec<u8> = Vec::new();
file.read_to_end(&mut new_file_content)?;

assert_eq!(file_content, new_file_content);

Ok(())
}

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