sync: Implement per-type commit interface

sync/engine/sync_directory_commit_contribution_unittest.cc

Index: sync/engine/sync_directory_commit_contribution_unittest.cc
diff --git a/sync/engine/sync_directory_commit_contribution_unittest.cc b/sync/engine/sync_directory_commit_contribution_unittest.cc
new file mode 100644
index 0000000000000000000000000000000000000000..411517f3a202032a193c64b761e1b757a89c7f64
--- /dev/null
+++ b/sync/engine/sync_directory_commit_contribution_unittest.cc
@@ -0,0 +1,221 @@
+// Copyright 2013 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.
+
+#include "base/message_loop/message_loop.h"
+#include "sync/engine/sync_directory_commit_contribution.h"
+#include "sync/sessions/status_controller.h"
+#include "sync/syncable/entry.h"
+#include "sync/syncable/mutable_entry.h"
+#include "sync/syncable/syncable_read_transaction.h"
+#include "sync/syncable/syncable_write_transaction.h"
+#include "sync/test/engine/test_directory_setter_upper.h"
+#include "sync/test/engine/test_id_factory.h"
+#include "sync/test/engine/test_syncable_utils.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace syncer {
+
+class SyncDirectoryCommitContributionTest : public ::testing::Test {
+ public:
+  virtual void SetUp() OVERRIDE {
+    dir_maker_.SetUp();
+
+    syncable::WriteTransaction trans(FROM_HERE, syncable::UNITTEST, dir());
+    CreateTypeRoot(&trans, dir(), PREFERENCES);
+    CreateTypeRoot(&trans, dir(), EXTENSIONS);
+  }
+
+  virtual void TearDown() OVERRIDE {
+    dir_maker_.TearDown();
+  }
+
+ protected:
+  int64 CreateUnsyncedItem(syncable::WriteTransaction* trans,
+                           ModelType type,
+                           const std::string& tag) {
+    syncable::Entry parent_entry(
+        trans,
+        syncable::GET_BY_SERVER_TAG,
+        ModelTypeToRootTag(type));
+    syncable::MutableEntry entry(
+        trans,
+        syncable::CREATE,
+        type,
+        parent_entry.GetId(),
+        tag);
+    entry.PutIsUnsynced(true);
+    return entry.GetMetahandle();
+  }
+
+  void CreateSuccessfulCommitResponse(
+      const sync_pb::SyncEntity& entity,
+      sync_pb::CommitResponse::EntryResponse* response) {
+    response->set_response_type(sync_pb::CommitResponse::SUCCESS);
+    response->set_non_unique_name(entity.name());
+    response->set_version(entity.version() + 1);
+    response->set_parent_id_string(entity.parent_id_string());
+
+    if (entity.id_string()[0] == '-')  // Look for the - in 'c-1234' style IDs.
+      response->set_id_string(id_factory_.NewServerId().GetServerId());
+    else
+      response->set_id_string(entity.id_string());
+  }
+
+  syncable::Directory* dir() {
+    return dir_maker_.directory();
+  }
+
+  TestIdFactory id_factory_;
+
+ private:
+  base::MessageLoop loop_;  // Neeed to initialize the directory.
+  TestDirectorySetterUpper dir_maker_;
+};
+
+// Verify that the SyncDirectoryCommitContribution contains only entries of its
+// specified type.
+TEST_F(SyncDirectoryCommitContributionTest, GatherByTypes) {
+  int64 pref1;
+  {
+    syncable::WriteTransaction trans(FROM_HERE, syncable::UNITTEST, dir());
+    pref1 = CreateUnsyncedItem(&trans, PREFERENCES, "pref1");
+    CreateUnsyncedItem(&trans, PREFERENCES, "pref2");
+    CreateUnsyncedItem(&trans, EXTENSIONS, "extension1");
+  }
+
+  scoped_ptr<SyncDirectoryCommitContribution> cc(
+      SyncDirectoryCommitContribution::Build(dir(), PREFERENCES, 5));
+  ASSERT_EQ(2U, cc->GetNumEntries());
+
+  const std::vector<int64>& metahandles = cc->metahandles_;
+  EXPECT_TRUE(std::find(metahandles.begin(), metahandles.end(), pref1) !=
+              metahandles.end());
+  EXPECT_TRUE(std::find(metahandles.begin(), metahandles.end(), pref1) !=
+              metahandles.end());
+}
+
+// Verify that the SyncDirectoryCommitContributionTest builder function
+// truncates if necessary.
+TEST_F(SyncDirectoryCommitContributionTest, GatherAndTruncate) {
+  int64 pref1;
+  int64 pref2;
+  {
+    syncable::WriteTransaction trans(FROM_HERE, syncable::UNITTEST, dir());
+    pref1 = CreateUnsyncedItem(&trans, PREFERENCES, "pref1");
+    pref2 = CreateUnsyncedItem(&trans, PREFERENCES, "pref2");
+    CreateUnsyncedItem(&trans, EXTENSIONS, "extension1");
+  }
+
+  scoped_ptr<SyncDirectoryCommitContribution> cc(
+      SyncDirectoryCommitContribution::Build(dir(), PREFERENCES, 1));
+  ASSERT_EQ(1U, cc->GetNumEntries());
+
+  int64 only_metahandle = cc->metahandles_[0];
+  EXPECT_TRUE(only_metahandle == pref1 || only_metahandle == pref2);
+}
+
+// Sanity check for building commits from SyncDirectoryCommitContributions.
+// This test makes two CommitContribution objects of different types and uses
+// them to initialize a commit message.  Then it checks that the contents of the
+// commit message match those of the directory they came from.
+TEST_F(SyncDirectoryCommitContributionTest, PrepareCommit) {
+  {
+    syncable::WriteTransaction trans(FROM_HERE, syncable::UNITTEST, dir());
+    CreateUnsyncedItem(&trans, PREFERENCES, "pref1");
+    CreateUnsyncedItem(&trans, PREFERENCES, "pref2");
+    CreateUnsyncedItem(&trans, EXTENSIONS, "extension1");
+  }
+
+  scoped_ptr<SyncDirectoryCommitContribution> pref_cc(
+      SyncDirectoryCommitContribution::Build(dir(), PREFERENCES, 25));
+  scoped_ptr<SyncDirectoryCommitContribution> ext_cc(
+      SyncDirectoryCommitContribution::Build(dir(), EXTENSIONS, 25));
+
+  sync_pb::ClientToServerMessage message;
+  pref_cc->AddToCommitMessage(&message);
+  ext_cc->AddToCommitMessage(&message);
+
+  const sync_pb::CommitMessage& commit_message = message.commit();
+
+  std::set<syncable::Id> ids_for_commit;
+  ASSERT_EQ(3, commit_message.entries_size());
+  for (int i = 0; i < commit_message.entries_size(); ++i) {
+    const sync_pb::SyncEntity& entity = commit_message.entries(i);
+    // The entities in this test have client-style IDs since they've never been
+    // committed before, so we must use CreateFromClientString to re-create them
+    // from the commit message.
+    ids_for_commit.insert(syncable::Id::CreateFromClientString(
+            entity.id_string()));
+  }
+
+  ASSERT_EQ(3U, ids_for_commit.size());
+  {
+    syncable::ReadTransaction trans(FROM_HERE, dir());
+    for (std::set<syncable::Id>::iterator it = ids_for_commit.begin();
+         it != ids_for_commit.end(); ++it) {
+      SCOPED_TRACE(it->value());
+      syncable::Entry entry(&trans, syncable::GET_BY_ID, *it);
+      ASSERT_TRUE(entry.good());
+      EXPECT_TRUE(entry.GetSyncing());
+    }
+  }
+}
+
+TEST_F(SyncDirectoryCommitContributionTest, ProcessCommitResponse) {
+  int64 pref1_handle;
+  int64 pref2_handle;
+  int64 ext1_handle;
+  {
+    syncable::WriteTransaction trans(FROM_HERE, syncable::UNITTEST, dir());
+    pref1_handle = CreateUnsyncedItem(&trans, PREFERENCES, "pref1");
+    pref2_handle = CreateUnsyncedItem(&trans, PREFERENCES, "pref2");
+    ext1_handle = CreateUnsyncedItem(&trans, EXTENSIONS, "extension1");
+  }
+
+  scoped_ptr<SyncDirectoryCommitContribution> pref_cc(
+      SyncDirectoryCommitContribution::Build(dir(), PREFERENCES, 25));
+  scoped_ptr<SyncDirectoryCommitContribution> ext_cc(
+      SyncDirectoryCommitContribution::Build(dir(), EXTENSIONS, 25));
+
+  sync_pb::ClientToServerMessage message;
+  pref_cc->AddToCommitMessage(&message);
+  ext_cc->AddToCommitMessage(&message);
+
+  const sync_pb::CommitMessage& commit_message = message.commit();
+  ASSERT_EQ(3, commit_message.entries_size());
+
+  sync_pb::ClientToServerResponse response;
+  for (int i = 0; i < commit_message.entries_size(); ++i) {
+    sync_pb::SyncEntity entity = commit_message.entries(i);
+    sync_pb::CommitResponse_EntryResponse* entry_response =
+        response.mutable_commit()->add_entryresponse();
+    CreateSuccessfulCommitResponse(entity, entry_response);
+  }
+
+  sessions::StatusController status;
+
+  // Process these in reverse order.  Just because we can.
+  ext_cc->ProcessCommitResponse(response, &status);
+  pref_cc->ProcessCommitResponse(response, &status);
+
+  {
+    syncable::ReadTransaction trans(FROM_HERE, dir());
+    syncable::Entry p1(&trans, syncable::GET_BY_HANDLE, pref1_handle);
+    EXPECT_TRUE(p1.GetId().ServerKnows());
+    EXPECT_FALSE(p1.GetSyncing());
+    EXPECT_LT(0, p1.GetServerVersion());
+
+    syncable::Entry p2(&trans, syncable::GET_BY_HANDLE, pref2_handle);
+    EXPECT_TRUE(p2.GetId().ServerKnows());
+    EXPECT_FALSE(p2.GetSyncing());
+    EXPECT_LT(0, p2.GetServerVersion());
+
+    syncable::Entry e1(&trans, syncable::GET_BY_HANDLE, ext1_handle);
+    EXPECT_TRUE(e1.GetId().ServerKnows());
+    EXPECT_FALSE(e1.GetSyncing());
+    EXPECT_LT(0, e1.GetServerVersion());
+  }
+}
+
+}  // namespace syncer