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// Copyright 2016 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 PRINTING_BACKEND_TEST_PRINT_BACKEND_H_
#define PRINTING_BACKEND_TEST_PRINT_BACKEND_H_
#include <memory>
#include <string>
#include "base/containers/flat_map.h"
#include "printing/backend/print_backend.h"
namespace printing {
// PrintBackend which doesn't interact with the OS and responses
// can be overridden as necessary.
class TestPrintBackend : public PrintBackend {
public:
TestPrintBackend();
// PrintBackend overrides
bool EnumeratePrinters(PrinterList* printer_list) override;
std::string GetDefaultPrinterName() override;
bool GetPrinterBasicInfo(const std::string& printer_name,
PrinterBasicInfo* printer_info) override;
bool GetPrinterSemanticCapsAndDefaults(
const std::string& printer_name,
PrinterSemanticCapsAndDefaults* printer_info) override;
bool GetPrinterCapsAndDefaults(const std::string& printer_name,
PrinterCapsAndDefaults* printer_info) override;
std::string GetPrinterDriverInfo(const std::string& printer_name) override;
bool IsValidPrinter(const std::string& printer_name) override;
// Methods for test setup:
// Sets a default printer. The default is the empty string.
void SetDefaultPrinterName(const std::string& printer_name);
// Adds a printer to satisfy IsValidPrinter(), EnumeratePrinters(),
// GetPrinterBasicInfo(), and GetPrinterSemanticCapsAndDefaults().
// While `caps` can be null, it will cause queries for the capabilities to
// fail, and thus is likely not of interest for most tests. IsValidPrinter()
// will still show true even if `caps` is null, which provides the benefit of
// simulating a printer that exists in the system but cannot be queried.
// `info` can be null, which will result in queries for basic info to fail.
// Calling EnumeratePrinters() will include the identified `printer_name`
// even if either parameter is null.
void AddValidPrinter(const std::string& printer_name,
std::unique_ptr<PrinterSemanticCapsAndDefaults> caps,
std::unique_ptr<PrinterBasicInfo> info);
protected:
~TestPrintBackend() override;
private:
struct PrinterData {
PrinterData(std::unique_ptr<PrinterSemanticCapsAndDefaults> caps,
std::unique_ptr<PrinterBasicInfo> info);
~PrinterData();
std::unique_ptr<PrinterSemanticCapsAndDefaults> caps;
std::unique_ptr<PrinterBasicInfo> info;
};
std::string default_printer_name_;
// The values in `printer_map_` will not be null. The use of a pointer to
// PrinterData is just a workaround for the deleted copy assignment operator
// for the `caps` field, as that prevents the PrinterData container from
// being copied into the map.
base::flat_map<std::string, std::unique_ptr<PrinterData>> printer_map_;
};
} // namespace printing
#endif // PRINTING_BACKEND_TEST_PRINT_BACKEND_H_