Unify fuzzing and testing code

dev-test/.gitignore

@@ -0,0 +1,2 @@
+corpus
+artifacts

dev-test/Cargo.toml

@@ -2,24 +2,34 @@
 name = "dev-test"
 version = "0.1.0"
 edition = "2021"
+publish = false
 
-# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+[package.metadata]
+cargo-fuzz = true
 
-[dependencies.test-generator]
-version = "0.3.0"
-
-[dependencies.wast]
-version = "41.0.0"
+[dependencies]
+libfuzzer-sys = "0.4"
+wasm-smith = "0.8.0"
+wasm-ast = { path = "../wasm-ast" }
+codegen-luajit = { path = "../codegen-luajit" }
+codegen-luau = { path = "../codegen-luau" }
 
 [dependencies.parity-wasm]
 git = "https://github.com/paritytech/parity-wasm.git"
 features = ["multi_value", "sign_ext"]
 
-[dependencies.wasm-ast]
-path = "../wasm-ast"
+[dev-dependencies]
+test-generator = "0.3.0"
+wast = "41.0.0"
 
-[dependencies.codegen-luajit]
-path = "../codegen-luajit"
+[[bin]]
+name = "luajit_translate"
+path = "fuzz_targets/luajit_translate.rs"
+test = false
+doc = false
 
-[dependencies.codegen-luau]
-path = "../codegen-luau"
+[[bin]]
+name = "luau_translate"
+path = "fuzz_targets/luau_translate.rs"
+test = false
+doc = false

dev-test/fuzz_targets/luajit_translate.rs

@@ -0,0 +1,18 @@
+#![no_main]
+
+use wasm_ast::builder::TypeInfo;
+use wasm_smith::Module;
+
+// We are not interested in parity_wasm errors.
+libfuzzer_sys::fuzz_target!(|module: Module| {
+	let data = module.to_bytes();
+	let wasm = match parity_wasm::deserialize_buffer(&data) {
+		Ok(v) => v,
+		Err(_) => return,
+	};
+
+	let type_info = TypeInfo::from_module(&wasm);
+	let sink = &mut std::io::sink();
+
+	codegen_luajit::translate(&wasm, &type_info, sink).expect("LuaJIT should succeed");
+});

dev-test/fuzz_targets/luau_translate.rs

@@ -0,0 +1,18 @@
+#![no_main]
+
+use wasm_ast::builder::TypeInfo;
+use wasm_smith::Module;
+
+// We are not interested in parity_wasm errors.
+libfuzzer_sys::fuzz_target!(|module: Module| {
+	let data = module.to_bytes();
+	let wasm = match parity_wasm::deserialize_buffer(&data) {
+		Ok(v) => v,
+		Err(_) => return,
+	};
+
+	let type_info = TypeInfo::from_module(&wasm);
+	let sink = &mut std::io::sink();
+
+	codegen_luau::translate(&wasm, &type_info, sink).expect("Luau should succeed");
+});

dev-test/tests/specification.rs

@@ -117,6 +117,8 @@ fn parse_and_validate<'a>(buffer: &'a ParseBuffer) -> Option<Wast<'a>> {
 	observer.then(|| loaded)
 }
 
+static TEMP_DIR: &str = env!("CARGO_TARGET_TMPDIR");
+
 struct Tester<T> {
 	_marker: PhantomData<T>,
 }
@@ -124,7 +126,7 @@ struct Tester<T> {
 impl<T: Target> Tester<T> {
 	fn test(name: &str, source: &str) -> IResult<()> {
 		if let Some(data) = Self::run_generation(source)? {
-			let temp = std::env::temp_dir().join("wasm-test-".to_string() + name);
+			let temp = PathBuf::from(TEMP_DIR).join("west-".to_string() + name);
 
 			std::fs::write(&temp, &data)?;
 			Self::run_command(&temp)?;