1 files changed, 25 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setMonth/S15.9.5.38_A1_T1.js b/js/src/tests/test262/built-ins/Date/prototype/setMonth/S15.9.5.38_A1_T1.js
new file mode 100644
index 0000000000..ac3d594ccb
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setMonth/S15.9.5.38_A1_T1.js
@@ -0,0 +1,25 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date.prototype property "setMonth" has { DontEnum } attributes
+esid: sec-date.prototype.setmonth
+description: Checking absence of ReadOnly attribute
+---*/
+
+var x = Date.prototype.setMonth;
+if (x === 1) {
+  Date.prototype.setMonth = 2;
+} else {
+  Date.prototype.setMonth = 1;
+}
+
+assert.notSameValue(
+  Date.prototype.setMonth,
+  x,
+  'The value of Date.prototype.setMonth is expected to not equal the value of `x`'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);