Print Preview: Store preview data in the print preview handler....

chrome/browser/dom_ui/print_preview_handler_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/command_line.h"
+#include "base/shared_memory.h"
+#include "chrome/browser/dom_ui/print_preview_handler.h"
+#include "chrome/browser/dom_ui/print_preview_ui.h"
+#include "chrome/browser/printing/print_preview_tab_controller.h"
+#include "chrome/browser/tab_contents/tab_contents.h"
+#include "chrome/browser/tabs/tab_strip_model.h"
+#include "chrome/browser/ui/browser_list.h"
+#include "chrome/common/chrome_switches.h"
+#include "chrome/test/browser_with_test_window_test.h"
+#include "chrome/test/testing_profile.h"
+
+typedef BrowserWithTestWindowTest PrintPreviewHandlerTest;
+
+// Create/Get a preview tab for initiator tab.
+TEST_F(PrintPreviewHandlerTest, PrintPreviewData) {
+  // TODO(thestig) Remove when print preview is enabled by default.
+  CommandLine::ForCurrentProcess()->AppendSwitch(switches::kEnablePrintPreview);
+  ASSERT_TRUE(browser());
+  BrowserList::SetLastActive(browser());
+  ASSERT_TRUE(BrowserList::GetLastActive());
+
+  browser()->NewTab();
+  TabContents* initiator_tab = browser()->GetSelectedTabContents();
+  ASSERT_TRUE(initiator_tab);
+
+  scoped_refptr<printing::PrintPreviewTabController>
+      controller(new printing::PrintPreviewTabController());
+  ASSERT_TRUE(controller);
+
+  TabContents* preview_tab = controller->GetOrCreatePreviewTab(
+      initiator_tab, initiator_tab->controller().window_id().id());
+
+  EXPECT_NE(initiator_tab, preview_tab);
+  EXPECT_EQ(2, browser()->tab_count());
+
+  PrintPreviewHandler::PrintPreviewData data;
+  PrintPreviewHandler* handler =
+      reinterpret_cast<PrintPreviewUI*>(preview_tab->dom_ui())->handler();
+  handler->GetPrintPreviewData(&data);
+  EXPECT_EQ(NULL, data.first);
+  EXPECT_EQ(0U, data.second);
+
+  PrintPreviewHandler::PrintPreviewData dummy_data =
+      std::make_pair(new base::SharedMemory(), 1234);
+
+  handler->SetPrintPreviewData(dummy_data);
+  handler->GetPrintPreviewData(&data);
+  EXPECT_EQ(dummy_data, data);
+
+  // This should not cause any memory leaks.
+  dummy_data.first = new base::SharedMemory();
+  handler->SetPrintPreviewData(dummy_data);
+}