Prepares to move test generation to run-time

testing-macros/src/qemu.rs

@@ -36,6 +36,8 @@ pub fn parse_qemu_attribute(mut item: ItemFn) -> Result<TokenStream, Error> {
     let root = root.to_str().unwrap();
 
     item.block = Box::new(parse_quote!({
+        let dest = std::path::PathBuf::from(env!("CARGO_TARGET_TMPDIR"));
+        ::zfi_testing::gen_qemu_test(dest, #name, #body);
         ::zfi_testing::run_qemu_test(::std::path::Path::new(#root));
     }));
 

testing/Cargo.toml

@@ -7,6 +7,7 @@ repository = "https://github.com/ultimicro/zfi"
 edition = "2021"
 
 [dependencies]
+blake3 = "1.5.4"
 fatfs = "0.3"
 gpt = "3.1"
 regex = "1.9"

testing/src/qemu/mod.rs

@@ -11,10 +11,22 @@ use std::fs::{create_dir_all, File};
 use std::io::{BufRead, BufReader, Cursor};
 use std::ops::{Deref, DerefMut};
 use std::panic::panic_any;
-use std::path::Path;
+use std::path::{Path, PathBuf};
 use std::process::{Child, Command, Stdio};
 use std::sync::{Arc, Mutex};
 
+/// Generate a Cargo project in `dest` with `name` as a project name and `body` as a body of
+/// `efi_main`.
+///
+/// The project will be created as a sub-directory of `dest`.
+pub fn gen_qemu_test(dest: impl AsRef<Path>, name: &str, body: &str) -> PathBuf {
+    let root = dest
+        .as_ref()
+        .join(format!("{}-{}", name, blake3::hash(body.as_bytes())));
+
+    root
+}
+
 /// Run the project that was generated by [`qemu`] attribute.
 pub fn run_qemu_test<P: AsRef<Path>>(root: P) {
     let root = root.as_ref();