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

---
 js/src/tests/ecma_6/Set/NaN-as-key.js | 56 +++++++++++++++++++++++++++++++++++
 1 file changed, 56 insertions(+)
 create mode 100644 js/src/tests/ecma_6/Set/NaN-as-key.js

(limited to 'js/src/tests/ecma_6/Set/NaN-as-key.js')

diff --git a/js/src/tests/ecma_6/Set/NaN-as-key.js b/js/src/tests/ecma_6/Set/NaN-as-key.js
new file mode 100644
index 000000000..8c9207e88
--- /dev/null
+++ b/js/src/tests/ecma_6/Set/NaN-as-key.js
@@ -0,0 +1,56 @@
+/*
+ * Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/licenses/publicdomain/
+ */
+
+//-----------------------------------------------------------------------------
+var BUGNUMBER = 722260;
+var summary = 'All NaNs must be treated as identical keys for Set';
+
+print(BUGNUMBER + ": " + summary);
+
+/**************
+ * BEGIN TEST *
+ **************/
+
+/* Avoid constant-folding that would happen were |undefined| to be used. */
+var key = -/a/g.missingProperty;
+
+var s = new Set();
+s.add(key, 17);
+assertEq(s.has(key), true);
+assertEq(s.has(-key), true);
+assertEq(s.has(NaN), true);
+
+s.delete(-key);
+assertEq(s.has(key), false);
+assertEq(s.has(-key), false);
+assertEq(s.has(NaN), false);
+
+s.add(-key, 17);
+assertEq(s.has(key), true);
+assertEq(s.has(-key), true);
+assertEq(s.has(NaN), true);
+
+s.delete(NaN);
+assertEq(s.has(key), false);
+assertEq(s.has(-key), false);
+assertEq(s.has(NaN), false);
+
+s.add(NaN, 17);
+assertEq(s.has(key), true);
+assertEq(s.has(-key), true);
+assertEq(s.has(NaN), true);
+
+s.delete(key);
+assertEq(s.has(key), false);
+assertEq(s.has(-key), false);
+assertEq(s.has(NaN), false);
+
+
+/******************************************************************************/
+
+if (typeof reportCompare === "function")
+  reportCompare(true, true);
+
+print("Tests complete");
-- 
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