1 files changed, 24 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Number/S9.3.1_A12.js b/js/src/tests/test262/built-ins/Number/S9.3.1_A12.js
new file mode 100644
index 0000000000..4cc8621ed5
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Number/S9.3.1_A12.js
@@ -0,0 +1,24 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The MV of StrUnsignedDecimalLiteral::: DecimalDigits ExponentPart
+    is the MV of DecimalDigits times 10<sup><small>e</small></sup>, where e is the MV of ExponentPart
+es5id: 9.3.1_A12
+description: >
+    Compare Number('12345e6') with +('12345')*1e1,  and
+    Number('12345e-6') !== Number('12345')*1e-6
+---*/
+
+// CHECK#1
+if (Number("12345e6") !== +("12345") * 1e6) {
+  $ERROR('#1: Number("12345e6") === +("12345")*1e6');
+}
+
+// CHECK#2
+if (Number("12345e-6") !== Number("12345") * 1e-6) {
+  $ERROR('#2: Number("12345e-6") === Number("12345")*1e-6');
+}
+
+reportCompare(0, 0);