1 files changed, 46 insertions, 0 deletions
diff --git a/js/src/tests/non262/AsyncIterator/prototype/find/proxy.js b/js/src/tests/non262/AsyncIterator/prototype/find/proxy.js
new file mode 100644
index 0000000000..4f8a210b45
--- /dev/null
+++ b/js/src/tests/non262/AsyncIterator/prototype/find/proxy.js
@@ -0,0 +1,46 @@
+// |reftest| skip-if(!this.hasOwnProperty('AsyncIterator')) 
+//
+// This test checks that %Iterator.prototype%.find only gets the `next` method off of the
+// iterator once, and never accesses the @@iterator property.
+const log = [];
+const handlerProxy = new Proxy({}, {
+  get: (target, key, receiver) => (...args) => {
+    log.push(`${key}: ${args[1]?.toString()}`);
+    return Reflect[key](...args);
+  },
+});
+
+class Counter extends AsyncIterator {
+  value = 0;
+  next() {
+    const value = this.value;
+    if (value < 2) {
+      this.value = value + 1;
+      return Promise.resolve({done: false, value});
+    }
+    return Promise.resolve({done: true});
+  }
+}
+
+const iter = new Proxy(new Counter(), handlerProxy);
+iter.find(x => x % 2 == 1).then(value => {
+  assertEq(value, 1);
+
+  assertEq(
+    log.join('\n'),
+    `get: find
+get: next
+get: value
+set: value
+getOwnPropertyDescriptor: value
+defineProperty: value
+get: value
+set: value
+getOwnPropertyDescriptor: value
+defineProperty: value
+get: return`
+  );
+});
+
+if (typeof reportCompare === 'function')
+  reportCompare(0, 0);