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..658982745a9bd3e493cd4b7e3fd959e4f7861de1
--- /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 {
+
+TEST(MidiManagerAlsaTest, UdevEscape) {
+  ASSERT_EQ("", MidiManagerAlsa::CardInfo::UnescapeUdev(""));
+  ASSERT_EQ("\\", MidiManagerAlsa::CardInfo::UnescapeUdev("\\x5c"));
+  ASSERT_EQ("\\x5", MidiManagerAlsa::CardInfo::UnescapeUdev("\\x5"));
+  ASSERT_EQ("049f", MidiManagerAlsa::CardInfo::UnescapeUdev("049f"));
+  ASSERT_EQ("HD Pro Webcam C920",
+            MidiManagerAlsa::CardInfo::UnescapeUdev(
+                "HD\\x20Pro\\x20Webcam\\x20C920"));
+  ASSERT_EQ("E-MU Systems,Inc.",
+            MidiManagerAlsa::CardInfo::UnescapeUdev(
+                "E-MU\\x20Systems\\x2cInc."));
+}
+
+TEST(MidiManagerAlsaTest, ExtractManufacturer) {
+  ASSERT_EQ("My Vendor",
+            MidiManagerAlsa::CardInfo::ExtractManufacturerString(
+                "My\\x20Vendor",
+                "1234",
+                "My Vendor, Inc.",
+                "Card",
+                "My Vendor Inc Card at bus"));
+  ASSERT_EQ("My Vendor, Inc.",
+            MidiManagerAlsa::CardInfo::ExtractManufacturerString(
+                "1234",
+                "1234",
+                "My Vendor, Inc.",
+                "Card",
+                "My Vendor Inc Card at bus"));
+  ASSERT_EQ("My Vendor Inc",
+            MidiManagerAlsa::CardInfo::ExtractManufacturerString(
+                "1234",
+                "1234",
+                "",
+                "Card",
+                "My Vendor Inc Card at bus"));
+  ASSERT_EQ("My Vendor Inc",
+            MidiManagerAlsa::CardInfo::ExtractManufacturerString(
+                "",
+                "",
+                "",
+                "Card",
+                "My Vendor Inc Card at bus"));
+  ASSERT_EQ("",
+            MidiManagerAlsa::CardInfo::ExtractManufacturerString("1234",
+                                                                 "1234",
+                                                                 "",
+                                                                 "Card",
+                                                                 "Longname"));
+  ASSERT_EQ("Keystation Mini 32",
+            MidiManagerAlsa::CardInfo::ExtractManufacturerString(
+                "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",
+            MidiManagerAlsa::CardInfo::ExtractManufacturerString(
+                "",
+                "",
+                "",
+                "Keystation Mini 32",
+                "Keystation Mini 32 Keystation Mini 32 at"
+                " usb-0000:00:14.0-2.4.4, full speed"));
+}
+
+}  // namespace media