1 files changed, 22 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/String/prototype/charAt/S9.4_A1.js b/js/src/tests/test262/built-ins/String/prototype/charAt/S9.4_A1.js
new file mode 100644
index 0000000000..37aa8620dc
--- /dev/null
+++ b/js/src/tests/test262/built-ins/String/prototype/charAt/S9.4_A1.js
@@ -0,0 +1,22 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: If ToNumber(value) is NaN, ToInteger(value) returns +0
+es5id: 9.4_A1
+description: >
+    Check what position is defined by Number.NaN in string "abc":
+    "abc".charAt(Number.NaN)
+---*/
+
+// CHECK#1
+if ("abc".charAt(Number.NaN) !== "a") {
+  throw new Test262Error('#1: "abc".charAt(Number.NaN) === "a". Actual: ' + ("abc".charAt(Number.NaN)));
+}
+
+// CHECK#2
+if ("abc".charAt("x") !== "a") {
+  throw new Test262Error('#2: "abc".charAt("x") === "a". Actual: ' + ("abc".charAt("x")));
+}
+
+reportCompare(0, 0);