1 files changed, 41 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/String/prototype/indexOf/position-tointeger-bigint.js b/js/src/tests/test262/built-ins/String/prototype/indexOf/position-tointeger-bigint.js
new file mode 100644
index 0000000000..a7be5890ff
--- /dev/null
+++ b/js/src/tests/test262/built-ins/String/prototype/indexOf/position-tointeger-bigint.js
@@ -0,0 +1,41 @@
+// Copyright (C) 2017 Josh Wolfe. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+description: String.prototype.indexOf type coercion for position parameter
+esid: sec-string.prototype.indexof
+info: |
+  String.prototype.indexOf ( searchString [ , position ] )
+
+  4. Let pos be ? ToInteger(position).
+features: [BigInt, Symbol.toPrimitive, computed-property-names]
+---*/
+
+assert.throws(TypeError, function() {
+  "".indexOf("", 0n);
+}, "ToInteger: BigInt => TypeError");
+assert.throws(TypeError, function() {
+  "".indexOf("", Object(0n));
+}, "ToInteger: unbox object with internal slot => BigInt => TypeError");
+assert.throws(TypeError, function() {
+  "".indexOf("", {
+    [Symbol.toPrimitive]: function() {
+      return 0n;
+    }
+  });
+}, "ToInteger: @@toPrimitive => BigInt => TypeError");
+assert.throws(TypeError, function() {
+  "".indexOf("", {
+    valueOf: function() {
+      return 0n;
+    }
+  });
+}, "ToInteger: valueOf => BigInt => TypeError");
+assert.throws(TypeError, function() {
+  "".indexOf("", {
+    toString: function() {
+      return 0n;
+    }
+  });
+}, "ToInteger: toString => BigInt => TypeError");
+
+reportCompare(0, 0);