CUPS: Add a regression test for duplex detection.

chrome/browser/printing/print_system_task_proxy.h

 // 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.
 
 #ifndef CHROME_BROWSER_PRINTING_PRINT_SYSTEM_TASK_PROXY_H_
 #define CHROME_BROWSER_PRINTING_PRINT_SYSTEM_TASK_PROXY_H_
 #pragma once
 
 #include <string>
 
+#include "base/gtest_prod_util.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "build/build_config.h"
-#include "chrome/browser/ui/webui/print_preview_handler.h"
 #include "content/public/browser/browser_thread.h"
 
+class PrintPreviewHandler;
+
 namespace base {
 class DictionaryValue;
 class StringValue;
 }
 
 namespace printing {
 class PrintBackend;
+struct PrinterCapsAndDefaults;
 }
 
 #if defined(UNIT_TEST) && defined(USE_CUPS) && !defined(OS_MACOSX)
 typedef struct cups_option_s cups_option_t;
 
 namespace printing_internal {
 // Helper function to parse the lpoptions custom settings. |num_options| and
 // |options| will be updated if the custom settings for |printer_name| are
 // found, otherwise nothing is done.
 // NOTE: This function is declared here so it can be exposed for unit testing.
@@ skipping 15 matching lines @@
 
   void EnumeratePrinters();
 
   void GetPrinterCapabilities(const std::string& printer_name);
 
  private:
   friend struct content::BrowserThread::DeleteOnThread<
       content::BrowserThread::UI>;
   friend class DeleteTask<PrintSystemTaskProxy>;
 
+#if defined(UNIT_TEST) && defined(USE_CUPS)
+  FRIEND_TEST_ALL_PREFIXES(PrintSystemTaskProxyTest, DetectDuplexModeCUPS);
+  FRIEND_TEST_ALL_PREFIXES(PrintSystemTaskProxyTest, DetectNoDuplexModeCUPS);
+
+  // Only used for testing.
+  PrintSystemTaskProxy();
+#endif
+
+#if defined(USE_CUPS)
+  bool GetPrinterCapabilitiesCUPS(
+      const printing::PrinterCapsAndDefaults& printer_info,
+      const std::string& printer_name,
+      bool* set_color_as_default,
+      int* printer_color_space_for_color,
+      int* printer_color_space_for_black,
+      bool* set_duplex_as_default,
+      int* default_duplex_setting_value);
+#elif defined(OS_WIN)
+  void GetPrinterCapabilitiesWin(
+      const printing::PrinterCapsAndDefaults& printer_info,
+      bool* set_color_as_default,
+      int* printer_color_space_for_color,
+      int* printer_color_space_for_black,
+      bool* set_duplex_as_default,
+      int* default_duplex_setting_value);
+#endif
+
   void SendDefaultPrinter(const std::string* default_printer,
                           const std::string* cloud_print_data);
   void SetupPrinterList(base::ListValue* printers);
   void SendPrinterCapabilities(base::DictionaryValue* settings_info);
 
   ~PrintSystemTaskProxy();
 
   base::WeakPtr<PrintPreviewHandler> handler_;
 
   scoped_refptr<printing::PrintBackend> print_backend_;
 
   bool has_logged_printers_count_;
 
   DISALLOW_COPY_AND_ASSIGN(PrintSystemTaskProxy);
 };
 
 #endif  // CHROME_BROWSER_PRINTING_PRINT_SYSTEM_TASK_PROXY_H_