Implement chrome.experimental.downloads.search()

content/browser/download/download_query_unittest.cc

+// Copyright (c) 2011 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/stl_util.h"
+#include "content/browser/download/download_query.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+using download_util::DownloadQuery;
+
+class MockDownloadItem : public DownloadItemInterface {
+ public:
+};
+
+class DownloadQueryTest : public testing::Test {
+ public:
+  DownloadQueryTest() {}
+  virtual ~DownloadQueryTest() {}
+  virtual void TearDown() {
+    STLDeleteElements(&all_items_);
+  }
+  DownloadQuery* query() { return &query_; }
+  DownloadQuery::DownloadItems* all_items() { return &all_items_; }
+  DownloadQuery::DownloadItems* results() { return &results; }
+  void Search() {
+    query()->Search(all_items_, &results_);
+  }
+
+ private:
+  DownloadQuery query_;
+  DownloadQuery::DownloadItems all_items_;
+  DownloadQuery::DownloadItems results_;
+
+  DISALLOW_COPY_AND_ASSIGN(DownloadQueryTest);
+};
+
+TEST_F(DownloadQueryTest, EmptyQueryNoItems) {
+  Search();
+  EXPECT_EQ(0, results()->size());
+}
+
+TEST_F(DownloadQueryTest, EmptyQuerySomeItems) {
+  all_items()->push_back(new MockDownloadItem(0));
+  all_items()->push_back(new MockDownloadItem(1));
+  all_items()->push_back(new MockDownloadItem(2));
+  Search();
+  EXPECT_EQ(3, results()->size());
+}