Add returns promise test

test/built-ins/Promise/any/returns-promise.js

@@ -0,0 +1,24 @@
+// Copyright (C) 2019 Sergey Rubanov. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-promise.any
+description: Promise.any returns a Promise
+info: |
+  Promise.any ( iterable )
+
+  2. Let promiseCapability be ? NewPromiseCapability(C).
+  3. Let iteratorRecord be GetIterator(iterable).
+  4. IfAbruptRejectPromise(iteratorRecord, promiseCapability).
+  5. Let result be PerformPromiseAny(iteratorRecord, C, promiseCapability).
+  6. If result is an abrupt completion, then
+    a. If iteratorRecord.[[Done]] is false, set result to IteratorClose(iteratorRecord, result).
+    b. IfAbruptRejectPromise(result, promiseCapability).
+  7. Return Completion(result).
+features: [Promise.any]
+---*/
+
+var p = Promise.any([]);
+
+assert(p instanceof Promise);
+assert.sameValue(Object.getPrototypeOf(p), Promise.prototype);