Create a new print backend for the updated CUPS APIs

printing/backend/cups_ipp_util_unittest.cc

+// 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.
+
+#include <cups/cups.h>
+
+#include <map>
+#include <memory>
+
+#include "base/logging.h"
+#include "base/memory/ptr_util.h"
+#include "printing/backend/cups_ipp_util.h"
+#include "printing/backend/cups_printer.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace printing {
+
+class MockCupsOptionProvider : public CupsOptionProvider {
+ public:
+  ~MockCupsOptionProvider() override {}
+
+  ipp_attribute_t* GetSupportedOptionValues(
+      base::StringPiece option_name) const override {
+    const auto attr = supported_attributes_.find(option_name);
+    return attr != supported_attributes_.end() ? attr->second : nullptr;
+  }
+
+  std::vector<base::StringPiece> GetSupportedOptionValueStrings(
+      base::StringPiece option_name) const override {
+    ipp_attribute_t* attr = GetSupportedOptionValues(option_name);
+    if (!attr)
+      return std::vector<base::StringPiece>();
+
+    std::vector<base::StringPiece> strings;
+    int size = ippGetCount(attr);
+    for (int i = 0; i < size; ++i) {
+      strings.emplace_back(ippGetString(attr, i, nullptr));
+    }
+
+    return strings;
+  }
+
+  ipp_attribute_t* GetDefaultOptionValue(
+      base::StringPiece option_name) const override {
+    const auto attr = default_attributes_.find(option_name);
+    return attr != default_attributes_.end() ? attr->second : nullptr;
+  }
+
+  bool CheckOptionSupported(base::StringPiece name,
+                            base::StringPiece value) const override {
+    NOTREACHED();
+    return false;
+  }
+
+  void SetSupportedOptions(base::StringPiece name, ipp_attribute_t* attribute) {
+    supported_attributes_[name] = attribute;
+  }
+
+  void SetOptionDefault(base::StringPiece name, ipp_attribute_t* attribute) {
+    default_attributes_[name] = attribute;
+  }
+
+ private:
+  std::map<base::StringPiece, ipp_attribute_t*> supported_attributes_;
+  std::map<base::StringPiece, ipp_attribute_t*> default_attributes_;
+};
+
+class PrintBackendCupsIppUtilTest : public ::testing::Test {
+ protected:
+  void SetUp() override {
+    ipp_ = ippNew();
+    printer_ = base::MakeUnique<MockCupsOptionProvider>();
+  }
+
+  void TearDown() override {
+    ippDelete(ipp_);
+    printer_.reset();
+  }
+
+  ipp_t* ipp_;
+  std::unique_ptr<MockCupsOptionProvider> printer_;
+};
+
+ipp_attribute_t* MakeRange(ipp_t* ipp, int lower_bound, int upper_bound) {
+  return ippAddRange(ipp, IPP_TAG_PRINTER, "TEST_DATA", lower_bound,
+                     upper_bound);
+}
+
+ipp_attribute_t* MakeString(ipp_t* ipp, const char* value) {
+  return ippAddString(ipp, IPP_TAG_PRINTER, IPP_TAG_KEYWORD, "TEST_DATA",
+                      nullptr, value);
+}
+
+ipp_attribute_t* MakeStringCollection(ipp_t* ipp,
+                                      std::vector<const char*> strings) {
+  return ippAddStrings(ipp, IPP_TAG_PRINTER, IPP_TAG_KEYWORD, "TEST_DATA",
+                       strings.size(), nullptr, strings.data());
+}
+
+TEST_F(PrintBackendCupsIppUtilTest, CopiesCapable) {
+  printer_->SetSupportedOptions("copies", MakeRange(ipp_, 1, 2));
+
+  PrinterSemanticCapsAndDefaults caps;
+  CapsAndDefaultsFromPrinter(*printer_, &caps);
+
+  EXPECT_TRUE(caps.copies_capable);
+}
+
+TEST_F(PrintBackendCupsIppUtilTest, CopiesNotCapable) {
+  // copies missing, no setup
+  PrinterSemanticCapsAndDefaults caps;
+  CapsAndDefaultsFromPrinter(*printer_, &caps);
+
+  EXPECT_FALSE(caps.copies_capable);
+}
+
+TEST_F(PrintBackendCupsIppUtilTest, ColorPrinter) {
+  printer_->SetSupportedOptions(
+      "print-color-mode", MakeStringCollection(ipp_, {"color", "monochrome"}));
+  printer_->SetOptionDefault("print-color-mode", MakeString(ipp_, "color"));
+
+  PrinterSemanticCapsAndDefaults caps;
+  CapsAndDefaultsFromPrinter(*printer_, &caps);
+
+  EXPECT_TRUE(caps.color_changeable);
+  EXPECT_TRUE(caps.color_default);
+}
+
+TEST_F(PrintBackendCupsIppUtilTest, BWPrinter) {
+  printer_->SetSupportedOptions("print-color-mode",
+                                MakeStringCollection(ipp_, {"monochrome"}));
+  printer_->SetOptionDefault("print-color-mode",
+                             MakeString(ipp_, "monochrome"));
+
+  PrinterSemanticCapsAndDefaults caps;
+  CapsAndDefaultsFromPrinter(*printer_, &caps);
+
+  EXPECT_FALSE(caps.color_changeable);
+  EXPECT_FALSE(caps.color_default);
+}
+
+TEST_F(PrintBackendCupsIppUtilTest, DuplexSupported) {
+  printer_->SetSupportedOptions(
+      "sides",
+      MakeStringCollection(ipp_, {"two-sided-long-edge", "one-sided"}));
+  printer_->SetOptionDefault("sides", MakeString(ipp_, "one-sided"));
+
+  PrinterSemanticCapsAndDefaults caps;
+  CapsAndDefaultsFromPrinter(*printer_, &caps);
+
+  EXPECT_TRUE(caps.duplex_capable);
+  EXPECT_FALSE(caps.duplex_default);
+}
+
+TEST_F(PrintBackendCupsIppUtilTest, DuplexNotSupported) {
+  printer_->SetSupportedOptions("sides",
+                                MakeStringCollection(ipp_, {"one-sided"}));
+  printer_->SetOptionDefault("sides", MakeString(ipp_, "one-sided"));
+
+  PrinterSemanticCapsAndDefaults caps;
+  CapsAndDefaultsFromPrinter(*printer_, &caps);
+
+  EXPECT_FALSE(caps.duplex_capable);
+  EXPECT_FALSE(caps.duplex_default);
+}
+
+TEST_F(PrintBackendCupsIppUtilTest, A4PaperSupported) {
+  printer_->SetSupportedOptions(
+      "media", MakeStringCollection(ipp_, {"iso_a4_210x297mm"}));
+
+  PrinterSemanticCapsAndDefaults caps;
+  CapsAndDefaultsFromPrinter(*printer_, &caps);
+
+  PrinterSemanticCapsAndDefaults::Paper paper = caps.papers[0];
+  EXPECT_EQ("iso a4", paper.display_name);
+  EXPECT_EQ("iso_a4_210x297mm", paper.vendor_id);
+  EXPECT_EQ(210000, paper.size_um.width());
+  EXPECT_EQ(297000, paper.size_um.height());
+}
+
+TEST_F(PrintBackendCupsIppUtilTest, LegalPaperDefault) {
+  printer_->SetOptionDefault("media", MakeString(ipp_, "na_legal_8.5x14in"));
+
+  PrinterSemanticCapsAndDefaults caps;
+  CapsAndDefaultsFromPrinter(*printer_, &caps);
+
+  EXPECT_EQ("na legal", caps.default_paper.display_name);
+  EXPECT_EQ("na_legal_8.5x14in", caps.default_paper.vendor_id);
+  EXPECT_EQ(215900, caps.default_paper.size_um.width());
+  EXPECT_EQ(355600, caps.default_paper.size_um.height());
+}
+
+}  // namespace printing