From f589ef816682918dddaf13f9dc06aae5253cd56a Mon Sep 17 00:00:00 2001
From: Gaming4JC <g4jc@hyperbola.info>
Date: Fri, 13 Dec 2019 19:57:31 -0500
Subject: Bug 1317376 - Part 2: Detect Promise self-resolution when resolving
 through the Promise resolving fast path.

Tag #1287
---
 js/src/tests/ecma_6/Promise/self-resolve.js | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

(limited to 'js/src/tests/ecma_6')

diff --git a/js/src/tests/ecma_6/Promise/self-resolve.js b/js/src/tests/ecma_6/Promise/self-resolve.js
index e16a2ceb3..4e7e36c6c 100644
--- a/js/src/tests/ecma_6/Promise/self-resolve.js
+++ b/js/src/tests/ecma_6/Promise/self-resolve.js
@@ -5,6 +5,7 @@ if (!this.Promise) {
     quit(0);
 }
 
+// Resolve Promise with itself by directly calling the "Promise Resolve Function".
 let resolve;
 let promise = new Promise(function(x) { resolve = x; });
 resolve(promise)
@@ -20,4 +21,23 @@ drainJobQueue()
 assertEq(results.length, 1);
 assertEq(results[0], "rejected");
 
+// Resolve Promise with itself when the "Promise Resolve Function" is called
+// from (the fast path in) PromiseReactionJob.
+results = [];
+
+promise = new Promise(x => { resolve = x; });
+let promise2 = promise.then(() => promise2);
+
+promise2.then(() => assertEq(true, false, "not reached"), res => {
+    assertEq(res instanceof TypeError, true);
+    results.push("rejected");
+});
+
+resolve();
+
+drainJobQueue();
+
+assertEq(results.length, 1);
+assertEq(results[0], "rejected");
+
 this.reportCompare && reportCompare(0, 0, "ok");
-- 
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