Improve MidiManagerAlsa manufacturer reporting

media/midi/midi_manager_alsa_unittest.cc

Index: media/midi/midi_manager_alsa_unittest.cc
diff --git a/media/midi/midi_manager_alsa_unittest.cc b/media/midi/midi_manager_alsa_unittest.cc
new file mode 100644
index 0000000000000000000000000000000000000000..47b2e2cc27ece0b87cd8ab564ced922267c12906
--- /dev/null
+++ b/media/midi/midi_manager_alsa_unittest.cc
@@ -0,0 +1,77 @@
+// Copyright 2015 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 "media/midi/midi_manager_alsa.h"
+
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace media {
+
+namespace internal {
+
+namespace {
+
+TEST(MidiManagerAlsaTest, UdevEscape) {
+  ASSERT_EQ(R"()", UnescapeUdev(R"()"));
+  ASSERT_EQ(R"(\)", UnescapeUdev(R"(\x5c)"));
+  ASSERT_EQ(R"(\x5)", UnescapeUdev(R"(\x5)"));
+  ASSERT_EQ(R"(049f)", UnescapeUdev(R"(049f)"));
+  ASSERT_EQ(
+      R"(HD Pro Webcam C920)", UnescapeUdev(R"(HD\x20Pro\x20Webcam\x20C920)"));
+  ASSERT_EQ(
+      R"(E-MU Systems,Inc.)", UnescapeUdev(R"(E-MU\x20Systems\x2cInc.)"));
+}
+
+TEST(MidiManagerAlsaTest, ExtractManufacturer) {
+  ASSERT_EQ("My Vendor",
+            ExtractManufacturer(R"(My\x20Vendor)",
+                                "1234",
+                                "My Vendor, Inc.",
+                                "Card",
+                                "My Vendor Inc Card at bus"));
+  ASSERT_EQ("My Vendor, Inc.",
+            ExtractManufacturer("1234",
+                                "1234",
+                                "My Vendor, Inc.",
+                                "Card",
+                                "My Vendor Inc Card at bus"));
+  ASSERT_EQ("My Vendor Inc",
+            ExtractManufacturer("1234",
+                                "1234",
+                                "",
+                                "Card",
+                                "My Vendor Inc Card at bus"));
+  ASSERT_EQ("My Vendor Inc",
+            ExtractManufacturer("",
+                                "",
+                                "",
+                                "Card",
+                                "My Vendor Inc Card at bus"));
+  ASSERT_EQ("",
+            ExtractManufacturer("1234",
+                                "1234",
+                                "",
+                                "Card",
+                                "Longname"));
+  ASSERT_EQ("Keystation Mini 32",
+            ExtractManufacturer(R"(Keystation\x20Mini\x2032)",
+                                "129d",
+                                "Evolution Electronics, Ltd",
+                                "Keystation Mini 32",
+                                "Keystation Mini 32 Keystation Mini 32 at"
+                                " usb-0000:00:14.0-2.4.4, full speed"));
+  ASSERT_EQ("Keystation Mini 32",
+            ExtractManufacturer("",
+                                "",
+                                "",
+                                "Keystation Mini 32",
+                                "Keystation Mini 32 Keystation Mini 32 at"
+                                " usb-0000:00:14.0-2.4.4, full speed"));
+}
+
+}  // namespace
+
+}  // namespace internal
+
+}  // namespace media