Refactor the various ways to control what users can do to extensions.

chrome/test/data/extensions/api_test/management/management_policy/allowed.js

+// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+var callback = chrome.test.callback;
+
+// The names of the extensions to operate on, from their manifest.json files.
+var ENABLED_NAME = 'enabled_extension';
+var DISABLED_NAME = 'disabled_extension';
+var UNINSTALL_NAME = 'enabled_extension';
+
+// Given a list of extension |items|, finds the one with the given |name|.
+function findByName(items, name) {
+  chrome.test.assertEq(7, items.length);
+  var item;
+  for (var i = 0; i < items.length; i++) {
+    item = items[i];
+    if (item.name == name)
+      break;
+  }
+  if (name != item.name)
+    chrome.test.fail('Couldn\'t find installed extension ' + name);
+  return item;
+}
+
+var tests = [
+  // Tests disabling an extension, expecting it to succeed.
+  function allowedDisable() {
+    chrome.management.getAll(callback(function(items) {
+      var item = findByName(items, ENABLED_NAME);
+      console.log(item);
+      chrome.test.assertEq(true, item.mayDisable);
+      chrome.test.assertEq(true, item.enabled);
+
+      var id = item.id;
+      chrome.management.setEnabled(id, false, callback(function() {
+        chrome.management.get(id, callback(function(same_extension) {
+          chrome.test.assertEq(false, same_extension.enabled);
+        }));
+      }));
+    }));
+  },
+
+  // Tests enabling an extension, expecting it to succeed.
+  function allowedEnable() {
+    chrome.management.getAll(callback(function(items) {
+      var item = findByName(items, DISABLED_NAME);
+      chrome.test.assertEq(true, item.mayDisable);
+      chrome.test.assertEq(false, item.enabled);
+
+      var id = item.id;
+      chrome.management.setEnabled(id, true, callback(function() {
+        chrome.management.get(id, callback(function(same_extension) {
+          chrome.test.assertEq(true, same_extension.enabled);
+        }));
+      }));
+    }));
+  },
+
+  // Tests uninstalling an extension, expecting it to succeed.
+  function allowedUninstall() {
+    chrome.management.getAll(callback(function(items) {
+      var item = findByName(items, UNINSTALL_NAME);
+      chrome.test.assertEq(true, item.mayDisable);
+
+      var id = item.id;
+      chrome.management.uninstall(id, callback(function() {
+        chrome.test.assertNoLastError();
+        // The calling api test will verify that the item was uninstalled.
+      }));
+    }));
+  }
+];
+
+chrome.test.runTests(tests);