[WebMIDI] Introduce UsbMidi{Input, Output}Stream.

media/midi/usb_midi_output_stream_unittest.cc

+// 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_output_stream.h"
+
+#include <string>
+#include <vector>
+
+#include "base/memory/scoped_ptr.h"
+#include "base/strings/stringprintf.h"
+#include "media/midi/usb_midi_device.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace media {
+
+namespace {
+
+template<typename T, size_t N>
+std::vector<T> ToVector(const T((&array)[N])) {
+  return std::vector<T>(array, array + N);
+}
+
+class MockUsbMidiDevice : public UsbMidiDevice {
+ public:
+  virtual ~MockUsbMidiDevice() {}
+
+  virtual std::vector<uint8> GetDescriptor() OVERRIDE {
+    return std::vector<uint8>();
+  }
+
+  virtual void Send(int endpoint_number, const std::vector<uint8>& data)
+      OVERRIDE {
+    for (size_t i = 0; i < data.size(); ++i) {
+      log_ += base::StringPrintf("0x%02x ", data[i]);
+    }
+    log_ += base::StringPrintf("(endpoint = %d)\n", endpoint_number);
+  }
+
+  void Checkpoint(int tag) {
+    log_ += base::StringPrintf("checkpoint(%d)\n", tag);
+  }
+
+  const std::string& log() const { return log_; }
+
+ private:
+  std::string log_;
+};

[scherkus (not reviewing), 2014/01/22 06:51:46]

nit: these classes can still have DISALLOW_ macros in them

[yhirano, 2014/01/22 08:58:23]

Done.

+
+class UsbMidiOutputStreamTest : public ::testing::Test {
+ protected:
+  UsbMidiOutputStreamTest() {
+    UsbMidiJack jack(&device_, 1, 2, 4);
+    stream_.reset(new UsbMidiOutputStream(jack));
+  }
+
+  MockUsbMidiDevice device_;
+  scoped_ptr<UsbMidiOutputStream> stream_;
+};
+
+TEST_F(UsbMidiOutputStreamTest, SendEmpty) {
+  stream_->Send(std::vector<uint8>());
+
+  EXPECT_EQ("", device_.log());
+}
+
+TEST_F(UsbMidiOutputStreamTest, SendNoteOn) {
+  uint8 data[] = { 0x90, 0x45, 0x7f};
+
+  stream_->Send(ToVector(data));
+
+  EXPECT_EQ("0x29 0x90 0x45 0x7f (endpoint = 4)\n", device_.log());
+}
+
+TEST_F(UsbMidiOutputStreamTest, SendNoteOnPending) {
+  device_.Checkpoint(0);
+  stream_->Send(std::vector<uint8>(1, 0x90));
+  device_.Checkpoint(1);

[scherkus (not reviewing), 2014/01/22 06:51:46]

an alternative to checkpoints is the check device_.log() at different points in
time

for example .. that device_.log() is still an empty string after a call to
Send()

[yhirano, 2014/01/22 08:58:23]

That's a nice idea. Done.

+  stream_->Send(std::vector<uint8>(1, 0x45));
+  device_.Checkpoint(2);
+  stream_->Send(std::vector<uint8>(1, 0x7f));
+  device_.Checkpoint(3);
+  stream_->Send(std::vector<uint8>(1, 0x90));
+  device_.Checkpoint(4);
+  stream_->Send(std::vector<uint8>(1, 0x45));
+  device_.Checkpoint(5);
+
+  EXPECT_EQ("checkpoint(0)\n"
+            "checkpoint(1)\n"
+            "checkpoint(2)\n"
+            "0x29 0x90 0x45 0x7f (endpoint = 4)\n"
+            "checkpoint(3)\n"
+            "checkpoint(4)\n"
+            "checkpoint(5)\n", device_.log());
+}
+
+TEST_F(UsbMidiOutputStreamTest, SendNoteOnBurst) {
+  uint8 data1[] = { 0x90, };
+  uint8 data2[] = { 0x45, 0x7f, 0x90, 0x45, 0x71, 0x90, 0x45, 0x72, 0x90, };
+
+  stream_->Send(ToVector(data1));
+  stream_->Send(ToVector(data2));
+
+  EXPECT_EQ("0x29 0x90 0x45 0x7f "
+            "0x29 0x90 0x45 0x71 "
+            "0x29 0x90 0x45 0x72 (endpoint = 4)\n", device_.log());
+}
+
+TEST_F(UsbMidiOutputStreamTest, SendNoteOff) {
+  uint8 data[] = { 0x80, 0x33, 0x44, };
+
+  stream_->Send(ToVector(data));
+
+  EXPECT_EQ("0x28 0x80 0x33 0x44 (endpoint = 4)\n", device_.log());
+}
+
+TEST_F(UsbMidiOutputStreamTest, SendPolyphonicKeyPress) {
+  uint8 data[] = { 0xa0, 0x33, 0x44, };
+
+  stream_->Send(ToVector(data));
+
+  EXPECT_EQ("0x2a 0xa0 0x33 0x44 (endpoint = 4)\n", device_.log());
+}
+
+TEST_F(UsbMidiOutputStreamTest, SendControlChange) {
+  uint8 data[] = { 0xb7, 0x33, 0x44, };
+
+  stream_->Send(ToVector(data));
+
+  EXPECT_EQ("0x2b 0xb7 0x33 0x44 (endpoint = 4)\n", device_.log());
+}
+
+TEST_F(UsbMidiOutputStreamTest, SendProgramChange) {
+  uint8 data[] = { 0xc2, 0x33, };
+
+  stream_->Send(ToVector(data));
+
+  EXPECT_EQ("0x2c 0xc2 0x33 0x00 (endpoint = 4)\n", device_.log());
+}
+
+TEST_F(UsbMidiOutputStreamTest, SendChannelPressure) {
+  uint8 data[] = { 0xd1, 0x33, 0x44, };
+
+  stream_->Send(ToVector(data));
+
+  EXPECT_EQ("0x2d 0xd1 0x33 0x44 (endpoint = 4)\n", device_.log());
+}
+
+TEST_F(UsbMidiOutputStreamTest, SendPitchWheelChange) {
+  uint8 data[] = { 0xe4, 0x33, 0x44, };
+
+  stream_->Send(ToVector(data));
+
+  EXPECT_EQ("0x2e 0xe4 0x33 0x44 (endpoint = 4)\n", device_.log());
+}
+
+TEST_F(UsbMidiOutputStreamTest, SendTwoByteSysEx) {
+  uint8 data[] = { 0xf0, 0xf7, };
+
+  stream_->Send(ToVector(data));
+
+  EXPECT_EQ("0x26 0xf0 0xf7 0x00 (endpoint = 4)\n", device_.log());
+}
+
+TEST_F(UsbMidiOutputStreamTest, SendThreeByteSysEx) {
+  uint8 data[] = { 0xf0, 0x4f, 0xf7, };
+
+  stream_->Send(ToVector(data));
+
+  EXPECT_EQ("0x27 0xf0 0x4f 0xf7 (endpoint = 4)\n", device_.log());
+}
+
+TEST_F(UsbMidiOutputStreamTest, SendFourByteSysEx) {
+  uint8 data[] = { 0xf0, 0x00, 0x01, 0xf7, };
+
+  stream_->Send(ToVector(data));
+
+  EXPECT_EQ("0x24 0xf0 0x00 0x01 "
+            "0x25 0xf7 0x00 0x00 (endpoint = 4)\n", device_.log());
+}
+
+TEST_F(UsbMidiOutputStreamTest, SendFiveByteSysEx) {
+  uint8 data[] = { 0xf0, 0x00, 0x01, 0x02, 0xf7, };
+
+  stream_->Send(ToVector(data));
+
+  EXPECT_EQ("0x24 0xf0 0x00 0x01 "
+            "0x26 0x02 0xf7 0x00 (endpoint = 4)\n", device_.log());
+}
+
+TEST_F(UsbMidiOutputStreamTest, SendSixByteSysEx) {
+  uint8 data[] = { 0xf0, 0x00, 0x01, 0x02, 0x03, 0xf7, };
+
+  stream_->Send(ToVector(data));
+
+  EXPECT_EQ("0x24 0xf0 0x00 0x01 "
+            "0x27 0x02 0x03 0xf7 (endpoint = 4)\n", device_.log());
+}
+
+TEST_F(UsbMidiOutputStreamTest, SendPendingSysEx) {
+  uint8 data1[] = { 0xf0, 0x33, };
+  uint8 data2[] = { 0x44, 0x55, 0x66, };
+  uint8 data3[] = { 0x77, 0x88, 0x99, 0xf7, };
+
+  device_.Checkpoint(0);
+  stream_->Send(ToVector(data1));
+  device_.Checkpoint(1);
+  stream_->Send(ToVector(data2));
+  device_.Checkpoint(2);
+  stream_->Send(ToVector(data3));
+  device_.Checkpoint(3);
+
+  EXPECT_EQ("checkpoint(0)\n"
+            "checkpoint(1)\n"
+            "0x24 0xf0 0x33 0x44 (endpoint = 4)\n"
+            "checkpoint(2)\n"
+            "0x24 0x55 0x66 0x77 0x27 0x88 0x99 0xf7 (endpoint = 4)\n"
+            "checkpoint(3)\n", device_.log());
+}
+
+TEST_F(UsbMidiOutputStreamTest, SendNoteOnAfterSysEx) {
+  uint8 data[] = { 0xf0, 0x00, 0x01, 0x02, 0x03, 0xf7, 0x90, 0x44, 0x33, };
+
+  stream_->Send(ToVector(data));
+
+  EXPECT_EQ("0x24 0xf0 0x00 0x01 "
+            "0x27 0x02 0x03 0xf7 "
+            "0x29 0x90 0x44 0x33 (endpoint = 4)\n", device_.log());
+}
+
+TEST_F(UsbMidiOutputStreamTest, SendTimeCodeQuarterFrame) {
+  uint8 data[] = { 0xf1, 0x22, };
+
+  stream_->Send(ToVector(data));
+
+  EXPECT_EQ("0x22 0xf1 0x22 0x00 (endpoint = 4)\n", device_.log());
+}
+
+TEST_F(UsbMidiOutputStreamTest, SendSongPositionPointer) {
+  uint8 data[] = { 0xf2, 0x22, 0x33, };
+
+  stream_->Send(ToVector(data));
+
+  EXPECT_EQ("0x23 0xf2 0x22 0x33 (endpoint = 4)\n", device_.log());
+}
+
+TEST_F(UsbMidiOutputStreamTest, SendSongSelect) {
+  uint8 data[] = { 0xf3, 0x22, };
+
+  stream_->Send(ToVector(data));
+
+  EXPECT_EQ("0x22 0xf3 0x22 0x00 (endpoint = 4)\n", device_.log());
+}
+
+TEST_F(UsbMidiOutputStreamTest, TuneRequest) {
+  uint8 data[] = { 0xf6, };
+
+  stream_->Send(ToVector(data));
+
+  EXPECT_EQ("0x25 0xf6 0x00 0x00 (endpoint = 4)\n", device_.log());
+}
+
+TEST_F(UsbMidiOutputStreamTest, SendSongPositionPointerPending) {
+  uint8 data1[] = { 0xf2, 0x22, };
+  uint8 data2[] = { 0x33, };
+
+  stream_->Send(ToVector(data1));
+  device_.Checkpoint(0);
+  stream_->Send(ToVector(data2));
+
+  EXPECT_EQ("checkpoint(0)\n"
+            "0x23 0xf2 0x22 0x33 (endpoint = 4)\n", device_.log());
+}
+
+TEST_F(UsbMidiOutputStreamTest, SendRealTimeMessages) {
+  uint8 data[] = { 0xf8, 0xfa, 0xfb, 0xfc, 0xfe, 0xff, };
+
+  stream_->Send(ToVector(data));
+
+  EXPECT_EQ("0x25 0xf8 0x00 0x00 "
+            "0x25 0xfa 0x00 0x00 "
+            "0x25 0xfb 0x00 0x00 "
+            "0x25 0xfc 0x00 0x00 "
+            "0x25 0xfe 0x00 0x00 "
+            "0x25 0xff 0x00 0x00 (endpoint = 4)\n", device_.log());
+}
+
+TEST_F(UsbMidiOutputStreamTest, SendRealTimeInSysExMessage) {
+  uint8 data[] = {
+    0xf0, 0x00, 0x01, 0x02,
+    0xf8, 0xfa,
+    0x03, 0xf7,
+  };
+
+  stream_->Send(ToVector(data));
+
+  EXPECT_EQ("0x24 0xf0 0x00 0x01 "
+            "0x25 0xf8 0x00 0x00 "
+            "0x25 0xfa 0x00 0x00 "
+            "0x27 0x02 0x03 0xf7 (endpoint = 4)\n", device_.log());
+}
+
+}  // namespace
+
+}  // namespace media