1 files changed, 35 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/String/prototype/trimStart/this-value-whitespace.js b/js/src/tests/test262/built-ins/String/prototype/trimStart/this-value-whitespace.js
new file mode 100644
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+++ b/js/src/tests/test262/built-ins/String/prototype/trimStart/this-value-whitespace.js
@@ -0,0 +1,35 @@
+// Copyright (c) 2017 Valerie Young.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-string.prototype.trimStart
+description: TrimStart removes all whitespace from the start of a string.
+info: |
+  Runtime Symantics: TrimString ( string, where )
+  ...
+  3. If where is "start", let T be a String value that is a copy of S with
+     trailing white space removed.
+  ...
+
+  The definition of white space is the union of WhiteSpace and LineTerminator.
+  When determining whether a Unicode code point is in Unicode general category
+  “Zs”, code unit sequences are interpreted as UTF-16 encoded code point
+  sequences as specified in 6.1.4.
+
+features: [string-trimming, String.prototype.trimStart]
+---*/
+
+var trimStart = String.prototype.trimStart;
+
+// A string of all valid WhiteSpace Unicode code points
+var wspc = '\x09\x0A\x0B\x0C\x0D\x20\xA0\u1680\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200A\u202F\u205F\u3000\u2028\u2029\uFEFF';
+
+var str = wspc + 'a' + wspc + 'b' + wspc;
+var expected = 'a' + wspc + 'b' + wspc;
+
+assert.sameValue(
+  trimStart.call(str),
+  expected
+);
+
+reportCompare(0, 0);