ObjectContaining matches prototype properties

[#769]

src/core/asymmetric_equality/ObjectContaining.js

@@ -4,11 +4,35 @@ getJasmineRequireObj().ObjectContaining = function(j$) {
     this.sample = sample;
   }
 
+  function getPrototype(obj) {
+    if (Object.getPrototypeOf) {
+      return Object.getPrototypeOf(obj);
+    }
+
+    if (obj.constructor.prototype == obj) {
+      return null;
+    }
+
+    return obj.constructor.prototype;
+  }
+
+  function hasProperty(obj, property) {
+    if (!obj) {
+      return false;
+    }
+
+    if (Object.prototype.hasOwnProperty.call(obj, property)) {
+      return true;
+    }
+
+    return hasProperty(getPrototype(obj), property);
+  }
+
   ObjectContaining.prototype.asymmetricMatch = function(other) {
     if (typeof(this.sample) !== 'object') { throw new Error('You must provide an object to objectContaining, not \''+this.sample+'\'.'); }
 
     for (var property in this.sample) {
-      if (!Object.prototype.hasOwnProperty.call(other, property) ||
+      if (!hasProperty(other, property) ||
           !j$.matchersUtil.equals(this.sample[property], other[property])) {
         return false;
       }