1 files changed, 27 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Number/S9.3.1_A9.js b/js/src/tests/test262/built-ins/Number/S9.3.1_A9.js
new file mode 100644
index 0000000000..8d473f56f0
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+++ b/js/src/tests/test262/built-ins/Number/S9.3.1_A9.js
@@ -0,0 +1,27 @@
+// 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. DecimalDigits ExponentPart
+    is (the MV of the first DecimalDigits plus (the MV of the second DecimalDigits times
+    10<sup><small>-n</small></sup>)) times 10<sup><small>e</small></sup>, where n is the number
+    of characters in the second DecimalDigits and e is the MV of ExponentPart
+es5id: 9.3.1_A9
+description: >
+    Compare Number('1234.5678e9') with
+    (Number('1234')+(Number('5678')*1e-4))*1e9,  and +('1234.5678e-9')
+    with (Number('1234')+(Number('5678')*1e-4))*1e-9
+---*/
+
+// CHECK#1
+if (Number("1234.5678e9") !== (Number("1234") + (Number("5678") * 1e-4)) * 1e9) {
+  $ERROR('#1: Number("1234.5678e9") === (Number("1234")+(Number("5678")*1e-4))*1e9');
+}
+
+// CHECK#2
+if (+("1234.5678e-9") !== (Number("1234") + (Number("5678") * 1e-4)) * 1e-9) {
+  $ERROR('#2: +("1234.5678e-9") === (Number("1234")+(Number("5678")*1e-4))*1e-9');
+}
+
+reportCompare(0, 0);