Add initial Controller to DownloadService

components/download/internal/entry_utils_unittest.cc

+// Copyright 2017 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 "components/download/internal/entry_utils.h"
+
+#include <algorithm>
+
+#include "base/guid.h"
+#include "base/memory/ptr_util.h"
+#include "components/download/internal/test/entry_utils.h"
+#include "components/download/public/clients.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace download {
+
+TEST(DownloadServiceEntryUtilsTest, TestGetNumberOfEntriesForClient_NoEntries) {
+  Entry entry1 = test::BuildEntry(DownloadClient::TEST, base::GenerateGUID());
+  Entry entry2 = test::BuildEntry(DownloadClient::TEST, base::GenerateGUID());
+  Entry entry3 = test::BuildEntry(DownloadClient::TEST, base::GenerateGUID());
+
+  std::vector<Entry*> entries = {&entry1, &entry2, &entry3};
+
+  EXPECT_EQ(
+      0U, util::GetNumberOfEntriesForClient(DownloadClient::INVALID, entries));
+  EXPECT_EQ(3U,
+            util::GetNumberOfEntriesForClient(DownloadClient::TEST, entries));
+}
+
+TEST(DownloadServiceEntryUtilsTest, MapEntriesToClients) {
+  Entry entry1 = test::BuildEntry(DownloadClient::TEST, base::GenerateGUID());
+  Entry entry2 = test::BuildEntry(DownloadClient::TEST, base::GenerateGUID());
+  Entry entry3 = test::BuildEntry(DownloadClient::TEST, base::GenerateGUID());
+
+  std::vector<Entry*> entries = {&entry1, &entry2, &entry3};
+  std::vector<std::string> expected_list = {entry1.guid, entry2.guid,
+                                            entry3.guid};
+
+  // If DownloadClient::TEST isn't a valid Client, all of the associated entries
+  // should move to the DownloadClient::INVALID bucket.
+  auto mapped1 = util::MapEntriesToClients(std::set<DownloadClient>(), entries);
+  EXPECT_EQ(1U, mapped1.size());
+  EXPECT_NE(mapped1.end(), mapped1.find(DownloadClient::INVALID));
+  EXPECT_EQ(mapped1.end(), mapped1.find(DownloadClient::TEST));
+
+  auto list1 = mapped1.find(DownloadClient::INVALID)->second;
+  EXPECT_EQ(3U, list1.size());
+  EXPECT_TRUE(
+      std::equal(expected_list.begin(), expected_list.end(), list1.begin()));
+
+  // If DownloadClient::TEST is a valid Client, it should have the associated
+  // entries.
+  std::set<DownloadClient> clients = {DownloadClient::TEST};
+  auto mapped2 = util::MapEntriesToClients(clients, entries);
+  EXPECT_EQ(1U, mapped2.size());
+  EXPECT_NE(mapped2.end(), mapped2.find(DownloadClient::TEST));
+  EXPECT_EQ(mapped2.end(), mapped2.find(DownloadClient::INVALID));
+
+  auto list2 = mapped2.find(DownloadClient::TEST)->second;
+  EXPECT_EQ(3U, list2.size());
+  EXPECT_TRUE(
+      std::equal(expected_list.begin(), expected_list.end(), list2.begin()));
+}
+
+}  // namespace download