1 files changed, 87 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/ion/super-prop.js b/js/src/jit-test/tests/ion/super-prop.js
new file mode 100644
index 0000000000..004284730f
--- /dev/null
+++ b/js/src/jit-test/tests/ion/super-prop.js
@@ -0,0 +1,87 @@
+class Y {
+    a() {
+        assertEq(this.__proto__, X.prototype);
+        return 1;
+    }
+    b() {
+        assertEq(this.__proto__, X.prototype);
+        return 2;
+    }
+}
+
+class X extends Y {
+    a() { throw "not invoked"; }
+    b() {
+        return super.a() + super.b();
+    }
+    c(i) {
+        var a, b;
+
+        if (i % 2) {
+            a = "a";
+            b = "b"
+        } else {
+            a = "b";
+            b = "a";
+        }
+
+        return super[a]() + super[b]();
+    }
+}
+
+function simple() {
+    var x = new X();
+    assertEq(x.b(), 3);
+    assertEq(x.c(), 3);
+}
+
+class A {
+    b() { return 1;}
+}
+class B extends A {
+    a() {
+        assertEq(super.b(), 1);
+    }
+}
+
+function nullHomeObjectSuperBase(i) {
+    var b = new B();
+    if (i == 500) {
+        Object.setPrototypeOf(B.prototype, null);
+        // Don't crash
+    }
+    b.a();
+}
+
+class SArray extends Array {
+    constructor() {
+        super("a", "b");
+    }
+
+    a() {
+        assertEq(super.length, 0);
+        assertEq(this.length, 2);
+
+        assertEq(this[0], "a");
+        assertEq(this[1], "b");
+
+        assertEq(super[0], undefined);
+        assertEq(super[1], undefined);
+    }
+}
+
+function array() {
+    var s = new SArray();
+    s.a();
+}
+
+for (var i = 0; i < 1e4; i++) {
+    simple();
+    array();
+
+    try {
+        nullHomeObjectSuperBase(i);
+    } catch (e) {
+        assertEq(i >= 500, true);
+    }
+}