From 5f8de423f190bbb79a62f804151bc24824fa32d8 Mon Sep 17 00:00:00 2001
From: "Matt A. Tobin" <mattatobin@localhost.localdomain>
Date: Fri, 2 Feb 2018 04:16:08 -0500
Subject: Add m-esr52 at 52.6.0

---
 .../ecma_5/extensions/watch-inherited-property.js  | 38 ++++++++++++++++++++++
 1 file changed, 38 insertions(+)
 create mode 100644 js/src/tests/ecma_5/extensions/watch-inherited-property.js

(limited to 'js/src/tests/ecma_5/extensions/watch-inherited-property.js')

diff --git a/js/src/tests/ecma_5/extensions/watch-inherited-property.js b/js/src/tests/ecma_5/extensions/watch-inherited-property.js
new file mode 100644
index 000000000..1a0ad566b
--- /dev/null
+++ b/js/src/tests/ecma_5/extensions/watch-inherited-property.js
@@ -0,0 +1,38 @@
+/*
+ * Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/licenses/publicdomain/
+ */
+
+/* Create a prototype object with a setter property. */
+var protoSetterCount;
+var proto = ({ set x(v) { protoSetterCount++; } });
+
+/* Put a watchpoint on that setter. */
+var protoWatchCount;
+proto.watch('x', function() { protoWatchCount++; });
+
+/* Make an object with the above as its prototype. */
+function C() { }
+C.prototype = proto;
+var o = new C();
+
+/*
+ * Set a watchpoint on the property in the inheriting object. We have
+ * defined this to mean "duplicate the property, setter and all, in the
+ * inheriting object." I don't think debugging observation mechanisms
+ * should mutate the program being run, but that's what we've got.
+ */
+var oWatchCount;
+o.watch('x', function() { oWatchCount++; });
+
+/*
+ * Assign to the property. This should trip the watchpoint on the inheriting object and
+ * the setter.
+ */
+protoSetterCount = protoWatchCount = oWatchCount = 0;
+o.x = 1;
+assertEq(protoWatchCount, 0);
+assertEq(oWatchCount, 1);
+assertEq(protoSetterCount, 1);
+
+reportCompare(true, true);
-- 
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