rust-embed

git clone https://pyrossh.dev/repos/rust-embed.git

rust macro which loads files into the rust binary at compile time during release and loads the file from the fs during dev.

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file:

tests/allow_missing.rs

use std::{path::PathBuf, str::FromStr};

use rust_embed::Embed;

#[derive(Embed)]
#[folder = "examples/missing/"]
#[allow_missing = true]
struct Asset;

#[test]
fn missing_is_empty() {
  let path = PathBuf::from_str("./examples/missing").unwrap();
  assert!(!path.exists());
  assert_eq!(Asset::iter().count(), 0);
}