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// Copyright 2014 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/usb_midi_descriptor_parser.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace media {
namespace {
TEST(UsbMidiDescriptorParserTest, ParseEmpty) {
UsbMidiDescriptorParser parser;
std::vector<UsbMidiJack> jacks;
EXPECT_TRUE(parser.Parse(NULL, NULL, 0, &jacks));
EXPECT_TRUE(jacks.empty());
}
TEST(UsbMidiDescriptorParserTest, InvalidSize) {
UsbMidiDescriptorParser parser;
std::vector<UsbMidiJack> jacks;
uint8 data[] = {0x04};
EXPECT_FALSE(parser.Parse(NULL, data, arraysize(data), &jacks));
EXPECT_TRUE(jacks.empty());
}
TEST(UsbMidiDescriptorParserTest, NonExistingJackIsAssociated) {
UsbMidiDescriptorParser parser;
std::vector<UsbMidiJack> jacks;
// Jack id=1 is found in a CS_ENDPOINT descriptor, but there is no definition
// for the jack.
uint8 data[] = {
0x09, 0x04, 0x01, 0x00, 0x02, 0x01, 0x03, 0x00, 0x00, 0x07,
0x24, 0x01, 0x00, 0x01, 0x07, 0x00, 0x05, 0x25, 0x01, 0x01,
0x01,
};
EXPECT_FALSE(parser.Parse(NULL, data, arraysize(data), &jacks));
EXPECT_TRUE(jacks.empty());
}
TEST(UsbMidiDescriptorParserTest,
JacksShouldBeIgnoredWhenParserIsNotParsingMidiInterface) {
UsbMidiDescriptorParser parser;
std::vector<UsbMidiJack> jacks;
// a NON-MIDI INTERFACE descriptor followed by ENDPOINT and CS_ENDPOINT
// descriptors (Compare with the previous test case).
uint8 data[] = {
0x09, 0x04, 0x01, 0x00, 0x02, 0x01, 0x02, 0x00, 0x00, 0x07,
0x24, 0x01, 0x00, 0x01, 0x07, 0x00, 0x05, 0x25, 0x01, 0x01,
0x01,
};
EXPECT_TRUE(parser.Parse(NULL, data, arraysize(data), &jacks));
EXPECT_TRUE(jacks.empty());
}
TEST(UsbMidiDescriptorParserTest, Parse) {
UsbMidiDescriptorParser parser;
std::vector<UsbMidiJack> jacks;
// A complete device descriptor.
uint8 data[] = {
0x12, 0x01, 0x10, 0x01, 0x00, 0x00, 0x00, 0x08, 0x86, 0x1a,
0x2d, 0x75, 0x54, 0x02, 0x00, 0x02, 0x00, 0x01, 0x09, 0x02,
0x75, 0x00, 0x02, 0x01, 0x00, 0x80, 0x30, 0x09, 0x04, 0x00,
0x00, 0x00, 0x01, 0x01, 0x00, 0x00, 0x09, 0x24, 0x01, 0x00,
0x01, 0x09, 0x00, 0x01, 0x01, 0x09, 0x04, 0x01, 0x00, 0x02,
0x01, 0x03, 0x00, 0x00, 0x07, 0x24, 0x01, 0x00, 0x01, 0x51,
0x00, 0x06, 0x24, 0x02, 0x01, 0x02, 0x00, 0x06, 0x24, 0x02,
0x01, 0x03, 0x00, 0x06, 0x24, 0x02, 0x02, 0x06, 0x00, 0x09,
0x24, 0x03, 0x01, 0x07, 0x01, 0x06, 0x01, 0x00, 0x09, 0x24,
0x03, 0x02, 0x04, 0x01, 0x02, 0x01, 0x00, 0x09, 0x24, 0x03,
0x02, 0x05, 0x01, 0x03, 0x01, 0x00, 0x09, 0x05, 0x02, 0x02,
0x20, 0x00, 0x00, 0x00, 0x00, 0x06, 0x25, 0x01, 0x02, 0x02,
0x03, 0x09, 0x05, 0x82, 0x02, 0x20, 0x00, 0x00, 0x00, 0x00,
0x05, 0x25, 0x01, 0x01, 0x07,
};
EXPECT_TRUE(parser.Parse(NULL, data, arraysize(data), &jacks));
ASSERT_EQ(3u, jacks.size());
EXPECT_EQ(2u, jacks[0].jack_id);
EXPECT_EQ(0u, jacks[0].cable_number);
EXPECT_EQ(2u, jacks[0].endpoint_number());
EXPECT_EQ(UsbMidiJack::DIRECTION_OUT, jacks[0].direction());
EXPECT_EQ(NULL, jacks[0].device);
EXPECT_EQ(3u, jacks[1].jack_id);
EXPECT_EQ(1u, jacks[1].cable_number);
EXPECT_EQ(2u, jacks[1].endpoint_number());
EXPECT_EQ(UsbMidiJack::DIRECTION_OUT, jacks[1].direction());
EXPECT_EQ(NULL, jacks[1].device);
EXPECT_EQ(7u, jacks[2].jack_id);
EXPECT_EQ(0u, jacks[2].cable_number);
EXPECT_EQ(2u, jacks[2].endpoint_number());
EXPECT_EQ(UsbMidiJack::DIRECTION_IN, jacks[2].direction());
EXPECT_EQ(NULL, jacks[2].device);
}
} // namespace
} // namespace media
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