1 files changed, 53 insertions, 0 deletions
diff --git a/js/src/tests/non262/Function/function-toString-builtin-name.js b/js/src/tests/non262/Function/function-toString-builtin-name.js
new file mode 100644
index 0000000000..709e7e846b
--- /dev/null
+++ b/js/src/tests/non262/Function/function-toString-builtin-name.js
@@ -0,0 +1,53 @@
+// Repeats the test from 'Function/function-toString-builtin.js' and additionally
+// verifies the name matches the expected value.
+//
+// This behaviour is not required by the ECMAScript standard.
+
+// Greatly (!) simplified patterns for the PropertyName production.
+var propertyName = [
+    // PropertyName :: LiteralPropertyName :: IdentifierName
+    "\\w+",
+
+    // PropertyName :: LiteralPropertyName :: StringLiteral
+    "(?:'[^']*')",
+    "(?:\"[^\"]*\")",
+
+    // PropertyName :: LiteralPropertyName :: NumericLiteral
+    "\\d+",
+
+    // PropertyName :: ComputedPropertyName
+    "(?:\\[[^\\]]+\\])",
+].join("|")
+
+var nativeCode = RegExp([
+    "^", "function", ("(" + propertyName + ")?"), "\\(", "\\)", "\\{", "\\[native code\\]", "\\}", "$"
+].join("\\s*"));
+
+function assertFunctionName(fun, expected) {
+    var match = nativeCode.exec(fun.toString());
+    assertEq(match[1], expected);
+}
+
+// Bound functions are considered built-ins.
+assertFunctionName(function(){}.bind(), undefined);
+assertFunctionName(function fn(){}.bind(), undefined);
+
+// Built-ins which are well-known intrinsic objects.
+assertFunctionName(Array, "Array");
+assertFunctionName(Object.prototype.toString, "toString");
+assertFunctionName(decodeURI, "decodeURI");
+
+// Other built-in functions.
+assertFunctionName(Math.asin, "asin");
+assertFunctionName(String.prototype.blink, "blink");
+assertFunctionName(RegExp.prototype[Symbol.split], "[Symbol.split]");
+
+// Built-in getter functions.
+assertFunctionName(Object.getOwnPropertyDescriptor(RegExp.prototype, "flags").get, "flags");
+assertFunctionName(Object.getOwnPropertyDescriptor(Object.prototype, "__proto__").get, "__proto__");
+
+// Built-in setter functions.
+assertFunctionName(Object.getOwnPropertyDescriptor(Object.prototype, "__proto__").set, "__proto__");
+
+if (typeof reportCompare === "function")
+    reportCompare(0, 0);