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deserialize fuzz target: add expect() explanations instad of unwrap()

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This commit is contained in:
Pat Hickey 2017-09-07 21:38:22 -07:00
parent 3679f64b08
commit b318925325
1 changed files with 18 additions and 8 deletions
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26
fuzz/fuzz_targets/deserialize.rs
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@ -13,25 +13,33 @@ fn wasm_opt() -> PathBuf {
let bin = PathBuf::from(env!("OUT_DIR")).join("bin").join("wasm-opt");
assert!(
bin.exists(),
format!("could not find wasm-opt at: {:?}", wasm_opt())
format!(
"could not find wasm-opt at location installed by build.rs: {:?}",
wasm_opt()
)
);
bin
}
fuzz_target!(|data: &[u8]| {
let seed = mktemp::Temp::new_file().unwrap();
let mut seedfile = File::create(seed.as_ref()).unwrap();
seedfile.write_all(data).unwrap();
seedfile.flush().unwrap();
let seed = mktemp::Temp::new_file().expect("mktemp file to store fuzzer input");
let mut seedfile =
File::create(seed.as_ref()).expect("open temporary file for writing to store fuzzer input");
seedfile.write_all(data).expect(
"write fuzzer input to temporary file",
);
seedfile.flush().expect(
"flush fuzzer input to temporary file before starting wasm-opt",
);
let wasm = mktemp::Temp::new_file().unwrap();
let wasm = mktemp::Temp::new_file().expect("mktemp file to store wasm-opt output");
let opt_fuzz = Command::new(wasm_opt())
.arg("--translate-to-fuzz")
.arg(seed.as_ref())
.arg("-o")
.arg(wasm.as_ref())
.output()
.unwrap();
.expect("execute wasm-opt installed by build.rs");
assert!(
opt_fuzz.status.success(),
@ -42,5 +50,7 @@ fuzz_target!(|data: &[u8]| {
);
let _module: parity_wasm::elements::Module = parity_wasm::deserialize_file(wasm.as_ref())
.unwrap();
.expect(
"deserialize output of wasm-opt, indicating possible bug in deserializer",
);
});