media/midi/usb_midi_descriptor_parser_unittest.cc

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "media/midi/usb_midi_descriptor_parser.h"
   6
   7 #include "testing/gtest/include/gtest/gtest.h"
   8
   9 namespace media {
  10
  11 namespace {
  12
  13 TEST(UsbMidiDescriptorParserTest, ParseEmpty) {
  14   UsbMidiDescriptorParser parser;
  15   std::vector<UsbMidiJack> jacks;
  16   EXPECT_TRUE(parser.Parse(NULL, NULL, 0, &jacks));
  17   EXPECT_TRUE(jacks.empty());
  18 }
  19
  20 TEST(UsbMidiDescriptorParserTest, InvalidSize) {
  21   UsbMidiDescriptorParser parser;
  22   std::vector<UsbMidiJack> jacks;
  23   uint8 data[] = {0x04};
  24   EXPECT_FALSE(parser.Parse(NULL, data, arraysize(data), &jacks));
  25   EXPECT_TRUE(jacks.empty());
  26 }
  27
  28 TEST(UsbMidiDescriptorParserTest, NonExistingJackIsAssociated) {
  29   UsbMidiDescriptorParser parser;
  30   std::vector<UsbMidiJack> jacks;
  31   // Jack id=1 is found in a CS_ENDPOINT descriptor, but there is no definition
  32   // for the jack.
  33   uint8 data[] = {
  34     0x09, 0x04, 0x01, 0x00, 0x02, 0x01, 0x03, 0x00, 0x00, 0x07,
  35     0x24, 0x01, 0x00, 0x01, 0x07, 0x00, 0x05, 0x25, 0x01, 0x01,
  36     0x01,
  37   };
  38   EXPECT_FALSE(parser.Parse(NULL, data, arraysize(data), &jacks));
  39   EXPECT_TRUE(jacks.empty());
  40 }
  41
  42 TEST(UsbMidiDescriptorParserTest,
  43      JacksShouldBeIgnoredWhenParserIsNotParsingMIDIInterface) {
  44   UsbMidiDescriptorParser parser;
  45   std::vector<UsbMidiJack> jacks;
  46   // a NON-MIDI INTERFACE descriptor followed by ENDPOINT and CS_ENDPOINT
  47   // descriptors (Compare with the previous test case).
  48   uint8 data[] = {
  49     0x09, 0x04, 0x01, 0x00, 0x02, 0x01, 0x02, 0x00, 0x00, 0x07,
  50     0x24, 0x01, 0x00, 0x01, 0x07, 0x00, 0x05, 0x25, 0x01, 0x01,
  51     0x01,
  52   };
  53   EXPECT_TRUE(parser.Parse(NULL, data, arraysize(data), &jacks));
  54   EXPECT_TRUE(jacks.empty());
  55 }
  56
  57 TEST(UsbMidiDescriptorParserTest, Parse) {
  58   UsbMidiDescriptorParser parser;
  59   std::vector<UsbMidiJack> jacks;
  60   // A complete device descriptor.
  61   uint8 data[] = {
  62     0x12, 0x01, 0x10, 0x01, 0x00, 0x00, 0x00, 0x08, 0x86, 0x1a,
  63     0x2d, 0x75, 0x54, 0x02, 0x00, 0x02, 0x00, 0x01, 0x09, 0x02,
  64     0x75, 0x00, 0x02, 0x01, 0x00, 0x80, 0x30, 0x09, 0x04, 0x00,
  65     0x00, 0x00, 0x01, 0x01, 0x00, 0x00, 0x09, 0x24, 0x01, 0x00,
  66     0x01, 0x09, 0x00, 0x01, 0x01, 0x09, 0x04, 0x01, 0x00, 0x02,
  67     0x01, 0x03, 0x00, 0x00, 0x07, 0x24, 0x01, 0x00, 0x01, 0x51,
  68     0x00, 0x06, 0x24, 0x02, 0x01, 0x02, 0x00, 0x06, 0x24, 0x02,
  69     0x01, 0x03, 0x00, 0x06, 0x24, 0x02, 0x02, 0x06, 0x00, 0x09,
  70     0x24, 0x03, 0x01, 0x07, 0x01, 0x06, 0x01, 0x00, 0x09, 0x24,
  71     0x03, 0x02, 0x04, 0x01, 0x02, 0x01, 0x00, 0x09, 0x24, 0x03,
  72     0x02, 0x05, 0x01, 0x03, 0x01, 0x00, 0x09, 0x05, 0x02, 0x02,
  73     0x20, 0x00, 0x00, 0x00, 0x00, 0x06, 0x25, 0x01, 0x02, 0x02,
  74     0x03, 0x09, 0x05, 0x82, 0x02, 0x20, 0x00, 0x00, 0x00, 0x00,
  75     0x05, 0x25, 0x01, 0x01, 0x07,
  76   };
  77   EXPECT_TRUE(parser.Parse(NULL, data, arraysize(data), &jacks));
  78   ASSERT_EQ(3u, jacks.size());
  79
  80   EXPECT_EQ(2u, jacks[0].jack_id);
  81   EXPECT_EQ(0u, jacks[0].cable_number);
  82   EXPECT_EQ(2u, jacks[0].endpoint_number());
  83   EXPECT_EQ(UsbMidiJack::OUT, jacks[0].direction());
  84   EXPECT_EQ(NULL, jacks[0].device);
  85
  86   EXPECT_EQ(3u, jacks[1].jack_id);
  87   EXPECT_EQ(1u, jacks[1].cable_number);
  88   EXPECT_EQ(2u, jacks[1].endpoint_number());
  89   EXPECT_EQ(UsbMidiJack::OUT, jacks[1].direction());
  90   EXPECT_EQ(NULL, jacks[1].device);
  91
  92   EXPECT_EQ(7u, jacks[2].jack_id);
  93   EXPECT_EQ(0u, jacks[2].cable_number);
  94   EXPECT_EQ(2u, jacks[2].endpoint_number());
  95   EXPECT_EQ(UsbMidiJack::IN, jacks[2].direction());
  96   EXPECT_EQ(NULL, jacks[2].device);
  97 }
  98
  99 }  // namespace
 100
 101 }  // namespace media