[NTP4] Add ExtensionSet::AddAll and ExtensionService::GetAllInstalledExtensions.

R=aa@chromium.org
TBR=estade@chromium.org
TEST=ExtensionsSetTest.ExtensionSet passes and nothing breaks.
BUG=97762


Review URL: http://codereview.chromium.org/9134003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@118077 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 18 insertions, 1 deletions

diff --git a/chrome/common/extensions/extension_set_unittest.cc b/chrome/common/extensions/extension_set_unittest.cc
index 56f2b5f..37e5559 100644
--- a/chrome/common/extensions/extension_set_unittest.cc
+++ b/chrome/common/extensions/extension_set_unittest.cc
@@ -1,4 +1,4 @@
-// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// 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.
 
@@ -114,4 +114,21 @@ TEST(ExtensionSetTest, ExtensionSet) {
   extensions.Remove(ext2->id());
   EXPECT_EQ(2u, extensions.size());
   EXPECT_FALSE(extensions.GetByID(ext2->id()));
+
+  // Make a union of a set with 3 more extensions (only 2 are new).
+  scoped_refptr<Extension> ext5(CreateTestExtension("d", "", ""));
+  scoped_refptr<Extension> ext6(CreateTestExtension("e", "", ""));
+  ASSERT_TRUE(ext5 && ext6);
+
+  scoped_ptr<ExtensionSet> to_add(new ExtensionSet());
+  to_add->Insert(ext3);  // Already in |extensions|, should not affect size.
+  to_add->Insert(ext5);
+  to_add->Insert(ext6);
+
+  ASSERT_TRUE(extensions.Contains(ext3->id()));
+  ASSERT_TRUE(extensions.InsertAll(*to_add));
+  EXPECT_EQ(4u, extensions.size());
+
+  ASSERT_FALSE(extensions.InsertAll(*to_add));  // Re-adding same set no-ops.
+  EXPECT_EQ(4u, extensions.size());
 }