Get semantic capabilities from Print Backend.

printing/backend/cups_helper_unittest.cc

Index: printing/backend/cups_helper_unittest.cc
===================================================================
--- printing/backend/cups_helper_unittest.cc	(revision 0)
+++ printing/backend/cups_helper_unittest.cc	(revision 0)
@@ -0,0 +1,64 @@
+// Copyright (c) 2012 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 "printing/backend/cups_helper.h"
+#include "printing/backend/print_backend.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+TEST(PrintBackendCupsHelperTest, TestPpdParsing) {
+  std::string test_ppd_data;
+  test_ppd_data.append("*PPD-Adobe: \"4.3\"\n\n"
+                       "*OpenGroup: General/General\n\n"
+                       "*OpenUI *ColorModel/Color Model: PickOne\n"
+                       "*DefaultColorModel: Gray\n"
+                       "*ColorModel Gray/Grayscale: \""
+                       "<</cupsColorSpace 0/cupsColorOrder 0>>"
+                       "setpagedevice\"\n"
+                       "*ColorModel Black/Inverted Grayscale: \""
+                       "<</cupsColorSpace 3/cupsColorOrder 0>>"
+                       "setpagedevice\"\n"
+                       "*CloseUI: *ColorModel\n"
+                       "*OpenUI *Duplex/2-Sided Printing: PickOne\n"
+                       "*DefaultDuplex: DuplexTumble\n"
+                       "*Duplex None/Off: \"<</Duplex false>>"
+                       "setpagedevice\"\n"
+                       "*Duplex DuplexNoTumble/LongEdge: \""
+                       "<</Duplex true/Tumble false>>setpagedevice\"\n"
+                       "*Duplex DuplexTumble/ShortEdge: \""
+                       "<</Duplex true/Tumble true>>setpagedevice\"\n"
+                       "*CloseUI: *Duplex\n\n"
+                       "*CloseGroup: General\n");
+
+  printing::PrinterSemanticCapsAndDefaults caps;
+  EXPECT_TRUE(printing::parsePpdCapabilities("test", test_ppd_data, &caps));
+  EXPECT_FALSE(caps.color_capable);
+  EXPECT_FALSE(caps.color_default);
+  EXPECT_TRUE(caps.duplex_capable);
+  EXPECT_EQ(caps.duplex_default, printing::LONG_EDGE);
+}
+
+// Test duplex detection code, which regressed in http://crbug.com/103999.

[Albert Bodenhamer, 2012/09/04 23:09:36]

Should there be more tests here?  Different ways of expressing duplex, color,
etc?

[gene, 2012/09/04 23:19:50]

Sure. Let me add more. I've copied existing tests so far, so there should be no
regression in test coverage.

+TEST(PrintBackendCupsHelperTest, TestPpdParsing2) {
+  std::string test_ppd_data;
+  test_ppd_data.append(
+      "*PPD-Adobe: \"4.3\"\n\n"
+      "*OpenGroup: General/General\n\n"
+      "*OpenUI *Duplex/Double-Sided Printing: PickOne\n"
+      "*DefaultDuplex: None\n"
+      "*Duplex None/Off: "
+      "\"<</Duplex false>>setpagedevice\"\n"
+      "*Duplex DuplexNoTumble/Long Edge (Standard): "
+      "\"<</Duplex true/Tumble false>>setpagedevice\"\n"
+      "*Duplex DuplexTumble/Short Edge (Flip): "
+      "\"<</Duplex true/Tumble true>>setpagedevice\"\n"
+      "*CloseUI: *Duplex\n\n"
+      "*CloseGroup: General\n");
+
+  printing::PrinterSemanticCapsAndDefaults caps;
+  EXPECT_TRUE(printing::parsePpdCapabilities("test", test_ppd_data, &caps));
+  EXPECT_FALSE(caps.color_capable);
+  EXPECT_FALSE(caps.color_default);
+  EXPECT_TRUE(caps.duplex_capable);
+  EXPECT_EQ(caps.duplex_default, printing::SIMPLEX);
+}