1 files changed, 34 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setMonth/this-value-invalid-date.js b/js/src/tests/test262/built-ins/Date/prototype/setMonth/this-value-invalid-date.js
new file mode 100644
index 0000000000..d3e25b5e74
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setMonth/this-value-invalid-date.js
@@ -0,0 +1,34 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.setmonth
+description: >
+  Behavior when the "this" value is a Date object describing an invald date
+info: |
+  1. Let t be LocalTime(? thisTimeValue(this value)).
+  2. Let m be ? ToNumber(month).
+  3. If date is not specified, let dt be DateFromTime(t); otherwise, let dt be
+     ? ToNumber(date).
+  4. Let newDate be MakeDate(MakeDay(YearFromTime(t), m, dt),
+     TimeWithinDay(t)).
+  5. Let u be TimeClip(UTC(newDate)).
+  6. Set the [[DateValue]] internal slot of this Date object to u.
+  7. Return u.
+---*/
+
+var date = new Date(NaN);
+var result;
+
+result = date.setMonth(6);
+
+assert.sameValue(result, NaN, 'return value (month)');
+assert.sameValue(date.getTime(), NaN, '[[DateValue]] internal slot (month)');
+
+date = new Date(NaN);
+
+result = date.setMonth(6, 7);
+
+assert.sameValue(result, NaN, 'return value (date)');
+assert.sameValue(date.getTime(), NaN, '[[DateValue]] internal slot (month)');
+
+reportCompare(0, 0);