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-rw-r--r--js/src/tests/non262/Date/toString-generic.js15
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diff --git a/js/src/tests/non262/Date/toString-generic.js b/js/src/tests/non262/Date/toString-generic.js
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+++ b/js/src/tests/non262/Date/toString-generic.js
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+var BUGNUMBER = 861219;
+var summary = 'Date.prototype.toString is a generic function';
+
+// Revised in ECMA 2018, Date.prototype.toString is no longer generic (bug 1381433).
+
+print(BUGNUMBER + ": " + summary);
+
+for (var thisValue of [{}, [], /foo/, Date.prototype, new Proxy(new Date(), {})])
+ assertThrowsInstanceOf(() => Date.prototype.toString.call(thisValue), TypeError);
+
+for (var prim of [null, undefined, 0, 1.2, true, false, "foo", Symbol.iterator])
+ assertThrowsInstanceOf(() => Date.prototype.toString.call(prim), TypeError);
+
+if (typeof reportCompare === "function")
+ reportCompare(true, true);