v6

node_modules/object-inspect/test/has.js

@@ -0,0 +1,31 @@
+var inspect = require('../');
+var test = require('tape');
+
+var withoutProperty = function (object, property, fn) {
+    var original;
+    if (Object.getOwnPropertyDescriptor) {
+        original = Object.getOwnPropertyDescriptor(object, property);
+    } else {
+        original = object[property];
+    }
+    delete object[property];
+    try {
+        fn();
+    } finally {
+        if (Object.getOwnPropertyDescriptor) {
+            Object.defineProperty(object, property, original);
+        } else {
+            object[property] = original;
+        }
+    }
+};
+
+test('when Object#hasOwnProperty is deleted', function (t) {
+    t.plan(1);
+    var arr = [1, , 3];
+    Array.prototype[1] = 2; // this is needed to account for "in" vs "hasOwnProperty"
+    withoutProperty(Object.prototype, 'hasOwnProperty', function () {
+        t.equal(inspect(arr), '[ 1, , 3 ]');
+    });
+	delete Array.prototype[1];
+});