mirror of
https://github.com/denoland/rusty_v8.git
synced 2024-12-27 01:29:19 -05:00
52 lines
1.6 KiB
Rust
52 lines
1.6 KiB
Rust
// Tests from the same file run in a single process. That's why this test
|
|
// is in its own file, because changing the entropy source affects the
|
|
// whole process.
|
|
use std::sync::atomic::AtomicUsize;
|
|
use std::sync::atomic::Ordering;
|
|
|
|
static CALLS: AtomicUsize = AtomicUsize::new(0);
|
|
|
|
#[test]
|
|
fn set_entropy_source() {
|
|
const N: usize = 3;
|
|
|
|
v8::V8::set_entropy_source(|buf| {
|
|
CALLS.fetch_add(1, Ordering::SeqCst);
|
|
for c in buf {
|
|
*c = 42;
|
|
}
|
|
true
|
|
});
|
|
|
|
v8::V8::initialize_platform(v8::new_default_platform(0, false).make_shared());
|
|
v8::V8::initialize();
|
|
|
|
// Assumes that every isolate creates a PRNG from scratch, which is currently true.
|
|
let mut results = vec![];
|
|
for _ in 0..N {
|
|
let isolate = &mut v8::Isolate::new(Default::default());
|
|
let scope = &mut v8::HandleScope::new(isolate);
|
|
let context = v8::Context::new(scope);
|
|
let scope = &mut v8::ContextScope::new(scope, context);
|
|
let source = v8::String::new(scope, "Math.random()").unwrap();
|
|
let script = v8::Script::compile(scope, source, None).unwrap();
|
|
let result = script.run(scope).unwrap();
|
|
let result = result.to_string(scope).unwrap();
|
|
let result = result.to_rust_string_lossy(scope);
|
|
results.push(result);
|
|
}
|
|
|
|
unsafe {
|
|
v8::V8::dispose();
|
|
}
|
|
v8::V8::dispose_platform();
|
|
|
|
// All runs should have produced the same value.
|
|
assert_eq!(results.len(), N);
|
|
results.dedup();
|
|
assert_eq!(results.len(), 1);
|
|
|
|
// Doesn't have to be exactly N because V8 also calls
|
|
// the EntropySource for things like hash seeds and ASLR.
|
|
assert!(CALLS.load(Ordering::SeqCst) >= N);
|
|
}
|