1 files changed, 32 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/String/prototype/trimStart/this-value-line-terminator.js b/js/src/tests/test262/built-ins/String/prototype/trimStart/this-value-line-terminator.js
new file mode 100644
index 0000000000..03b30cf6c7
--- /dev/null
+++ b/js/src/tests/test262/built-ins/String/prototype/trimStart/this-value-line-terminator.js
@@ -0,0 +1,32 @@
+// 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 line terminators from the start of a string.
+info: |
+  Runtime Symantics: TrimString ( string, where )
+  ...
+  4. 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.
+
+features: [string-trimming, String.prototype.trimStart]
+---*/
+
+var trimStart = String.prototype.trimStart;
+
+// A string of all valid LineTerminator Unicode code points
+var lt = '\u000A\u000D\u2028\u2029';
+
+var str = lt + 'a' + lt + 'b' + lt;
+var expected = 'a' + lt + 'b' + lt;
+
+assert.sameValue(
+  trimStart.call(str),
+  expected
+);
+
+reportCompare(0, 0);