1 files changed, 50 insertions, 0 deletions
diff --git a/js/src/tests/non262/extensions/proxy-proto-setter.js b/js/src/tests/non262/extensions/proxy-proto-setter.js
new file mode 100644
index 0000000000..37e620cd1c
--- /dev/null
+++ b/js/src/tests/non262/extensions/proxy-proto-setter.js
@@ -0,0 +1,50 @@
+// |reftest| skip-if(!xulRuntime.shell)
+// Any copyright is dedicated to the Public Domain.
+// http://creativecommons.org/licenses/publicdomain/
+// Contributor: Blake Kaplan
+
+function expect(actual, arg) {
+    reportCompare(expect.expected, actual, arg);
+}
+
+var window = { set x(y) { expect(this, y) }, y: 4 };
+expect.expected = window;
+window.x = "setting through a setter directly";
+window.y = 5;
+reportCompare(5, window.y, "setting properties works");
+var easy = { easy: 'yes', __proto__: window }
+expect.expected = easy;
+easy.x = "setting through a setter all-native on prototype";
+easy.y = 6;
+reportCompare(5, window.y, "window.y remains as it was");
+reportCompare(6, easy.y, "shadowing works properly");
+
+var sandbox = evalcx('');
+sandbox.window = window;
+sandbox.print = print;
+sandbox.expect = expect;
+var hard = evalcx('Object.create(window)', sandbox);
+expect.expected = hard;
+hard.x = "a setter through proxy -> native";
+hard.y = 6;
+reportCompare(5, window.y, "window.y remains as it was through a proxy");
+reportCompare(6, hard.y, "shadowing works on proxies");
+
+hard.__proto__ = { 'passed': true }
+reportCompare(true, hard.passed, "can set proxy.__proto__ through a native");
+
+var inverse = evalcx('({ set x(y) { expect(this, y); }, y: 4 })', sandbox);
+expect.expected = inverse;
+inverse.x = "setting through a proxy directly";
+inverse.y = 5;
+reportCompare(5, inverse.y, "setting properties works on proxies");
+
+var inversehard = Object.create(inverse);
+expect.expected = inversehard;
+inversehard.x = "setting through a setter with a proxy on the proto chain";
+inversehard.y = 6;
+reportCompare(5, inverse.y, "inverse.y remains as it was");
+reportCompare(6, inversehard.y, "shadowing works native -> proxy");
+
+inversehard.__proto__ = { 'passed': true }
+reportCompare(true, inversehard.passed, "can set native.__proto__ through a proxy");