Add failing test for observer computed reads 2.16 regression

packages/ember-runtime/tests/system/object/computed_test.js

@@ -266,3 +266,16 @@ QUnit.test('Calling _super in apply outside the immediate function of a CP gette
 
   ok(emberGet(SubClass.create(), 'foo'), 'FOO', 'super value is fetched');
 });
+
+QUnit.test('observing computed.reads prop and overriding it in create() works', function() {
+  let Obj = EmberObject.extend({
+    name: computed.reads('model.name'),
+    nameDidChange: observer('name', function() {})
+  });
+
+  let obj1 = Obj.create({name: '1'});
+  let obj2 = Obj.create({name: '2'});
+
+  equal(obj1.get('name'), '1');
+  equal(obj2.get('name'), '2');
+});