1 files changed, 81 insertions, 0 deletions
diff --git a/js/rust/tests/vec_conversion.rs b/js/rust/tests/vec_conversion.rs
new file mode 100644
index 0000000000..a4446799aa
--- /dev/null
+++ b/js/rust/tests/vec_conversion.rs
@@ -0,0 +1,81 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#[macro_use]
+extern crate js;
+
+use js::ar::AutoRealm;
+use js::conversions::ConversionBehavior;
+use js::conversions::ConversionResult;
+use js::conversions::FromJSValConvertible;
+use js::conversions::ToJSValConvertible;
+use js::jsapi::root::JS_NewGlobalObject;
+use js::jsapi::root::JS::InitRealmStandardClasses;
+use js::jsapi::root::JS::OnNewGlobalHookOption;
+use js::jsapi::root::JS::RealmOptions;
+use js::jsval::UndefinedValue;
+use js::rust::{Runtime, SIMPLE_GLOBAL_CLASS};
+
+use std::ptr;
+
+fn assert_is_array(cx: *mut js::jsapi::root::JSContext, val: js::jsapi::root::JS::HandleValue) {
+    let mut is_array = false;
+    assert!(unsafe { js::jsapi::root::JS::IsArrayObject(cx, val, &mut is_array as *mut _) });
+    assert!(is_array);
+}
+
+#[test]
+fn vec_conversion() {
+    let rt = Runtime::new(false).unwrap();
+    let cx = rt.cx();
+
+    let h_option = OnNewGlobalHookOption::FireOnNewGlobalHook;
+    let c_option = RealmOptions::default();
+
+    unsafe {
+        let global = JS_NewGlobalObject(
+            cx,
+            &SIMPLE_GLOBAL_CLASS,
+            ptr::null_mut(),
+            h_option,
+            &c_option,
+        );
+        rooted!(in(cx) let global_root = global);
+        let global = global_root.handle();
+
+        let _ar = AutoRealm::with_obj(cx, global.get());
+        assert!(InitRealmStandardClasses(cx));
+
+        rooted!(in(cx) let mut rval = UndefinedValue());
+
+        let orig_vec: Vec<f32> = vec![1.0, 2.9, 3.0];
+        orig_vec.to_jsval(cx, rval.handle_mut());
+        assert_is_array(cx, rval.handle());
+        let converted = Vec::<f32>::from_jsval(cx, rval.handle(), ()).unwrap();
+        assert_eq!(&orig_vec, converted.get_success_value().unwrap());
+
+        let orig_vec: Vec<i32> = vec![1, 2, 3];
+        orig_vec.to_jsval(cx, rval.handle_mut());
+        assert_is_array(cx, rval.handle());
+        let converted =
+            Vec::<i32>::from_jsval(cx, rval.handle(), ConversionBehavior::Default).unwrap();
+
+        assert_eq!(&orig_vec, converted.get_success_value().unwrap());
+
+        rt.evaluate_script(global, "new Set([1, 2, 3])", "test", 1, rval.handle_mut())
+            .unwrap();
+        let converted =
+            Vec::<i32>::from_jsval(cx, rval.handle(), ConversionBehavior::Default).unwrap();
+
+        assert_eq!(&orig_vec, converted.get_success_value().unwrap());
+
+        rt.evaluate_script(global, "({})", "test", 1, rval.handle_mut())
+            .unwrap();
+        let converted = Vec::<i32>::from_jsval(cx, rval.handle(), ConversionBehavior::Default);
+        assert!(match converted {
+            Ok(ConversionResult::Failure(_)) => true,
+            _ => false,
+        });
+    }
+}