1 files changed, 58 insertions, 0 deletions
diff --git a/js/src/tests/ecma_6/Class/superPropNoOverwriting.js b/js/src/tests/ecma_6/Class/superPropNoOverwriting.js
new file mode 100644
index 000000000..db44b509c
--- /dev/null
+++ b/js/src/tests/ecma_6/Class/superPropNoOverwriting.js
@@ -0,0 +1,58 @@
+class X {
+    constructor() {
+        Object.defineProperty(this, "prop1", {
+            configurable: true,
+            writable: false,
+            value: 1
+        });
+
+        Object.defineProperty(this, "prop2", {
+            configurable: true,
+            get: function() { return 15; }
+        });
+
+        Object.defineProperty(this, "prop3", {
+            configurable: true,
+            set: function(a) { }
+        });
+
+        Object.defineProperty(this, "prop4", {
+            configurable: true,
+            get: function() { return 20; },
+            set: function(a) { }
+        });
+    }
+
+    f1() {
+        super.prop1 = 2;
+    }
+
+    f2() {
+        super.prop2 = 3;
+    }
+
+    f3() {
+        super.prop3 = 4;
+    }
+
+    f4() {
+        super.prop4 = 5;
+    }
+}
+
+var x = new X();
+
+assertThrowsInstanceOf(() => x.f1(), TypeError);
+assertEq(x.prop1, 1);
+
+assertThrowsInstanceOf(() => x.f2(), TypeError);
+assertEq(x.prop2, 15);
+
+assertThrowsInstanceOf(() => x.f3(), TypeError);
+assertEq(x.prop3, undefined);
+
+assertThrowsInstanceOf(() => x.f4(), TypeError);
+assertEq(x.prop4, 20);
+
+if (typeof reportCompare === 'function')
+    reportCompare(0,0,"OK");