1 files changed, 52 insertions, 0 deletions
diff --git a/js/src/tests/test262/language/expressions/prefix-decrement/whitespace.js b/js/src/tests/test262/language/expressions/prefix-decrement/whitespace.js
new file mode 100644
index 0000000000..f7a38319c7
--- /dev/null
+++ b/js/src/tests/test262/language/expressions/prefix-decrement/whitespace.js
@@ -0,0 +1,52 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+description: |
+    White Space and Line Terminator between "--" and UnaryExpression are
+    allowed
+es5id: 11.4.5_A1
+esid: sec-prefix-decrement-operator
+---*/
+
+var x = 0;
+
+assert.sameValue(--	x, -1, 'U+0009 (expression)');
+assert.sameValue(x, -1, 'U+0009 (side effect)');
+
+assert.sameValue(--x, -2, 'U+000B (expression)');
+assert.sameValue(x, -2, 'U+000B (side effect)');
+
+assert.sameValue(--x, -3, 'U+000C (expression)');
+assert.sameValue(x, -3, 'U+000C (side effect)');
+
+assert.sameValue(-- x, -4, 'U+0020 (expression)');
+assert.sameValue(x, -4, 'U+0020 (side effect)');
+
+assert.sameValue(-- x, -5, 'U+00A0 (expression)');
+assert.sameValue(x, -5, 'U+00A0 (side effect)');
+
+assert.sameValue(--
+x, -6, 'U+000A (expression)');
+assert.sameValue(x, -6, 'U+000A (side effect)');
+
+assert.sameValue(--
+x, -7, 'U+000D (expression)');
+assert.sameValue(x, -7, 'U+000D (side effect)');
+
+assert.sameValue(-- x, -8, 'U+2028 (expression)');
+assert.sameValue(x, -8, 'U+2028 (side effect)');
+
+assert.sameValue(-- x, -9, 'U+2029 (expression)');
+assert.sameValue(x, -9, 'U+2029 (side effect)');
+
+assert.sameValue(
+  --	  
+
+  x,
+  -10,
+  'U+0009U+000BU+000CU+0020U+00A0U+000AU+000DU+2028U+2029 (expression)'
+);
+assert.sameValue(
+  x, -10, 'U+0009U+000BU+000CU+0020U+00A0U+000AU+000DU+2028U+2029 (side effect)'
+);
+
+reportCompare(0, 0);