[usb_gadget p05] Add a HID mouse gadget.

tools/usb_gadget/mouse_gadget_test.py

+#!/usr/bin/python
+# 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.
+
+import unittest
+
+import mock
+
+import hid_constants
+import mouse_gadget
+import usb_constants
+
+
+class MouseGadgetTest(unittest.TestCase):
+
+  def test_click(self):
+    g = mouse_gadget.MouseGadget()
+    chip = mock.Mock()
+    g.Connected(chip, usb_constants.Speed.FULL)
+    g.ButtonDown(hid_constants.Mouse.BUTTON_1)
+    self.assertEqual(g.ControlRead(0xA1, 1, 0x0100, 0, 8), '\x01\x00\x00')
+    g.ButtonUp(hid_constants.Mouse.BUTTON_1)
+    chip.SendPacket.assert_has_calls([
+        mock.call(0x81, '\x01\x00\x00'),
+        mock.call(0x81, '\x00\x00\x00'),
+    ])
+
+  def test_move(self):
+    g = mouse_gadget.MouseGadget()
+    chip = mock.Mock()
+    g.Connected(chip, usb_constants.Speed.FULL)
+    g.Move(-1, 1)
+    chip.SendPacket.assert_called(0x81, '\x00\xFF\x01')
+
+  def test_drag(self):
+    g = mouse_gadget.MouseGadget()
+    chip = mock.Mock()
+    g.Connected(chip, usb_constants.Speed.FULL)
+    g.ButtonDown(hid_constants.Mouse.BUTTON_1)
+    g.Move(5, 5)
+    g.ButtonUp(hid_constants.Mouse.BUTTON_1)
+    chip.SendPacket.assert_has_calls([
+        mock.call(0x81, '\x01\x00\x00'),
+        mock.call(0x81, '\x01\x05\x05'),
+        mock.call(0x81, '\x00\x00\x00'),
+    ])
+
+if __name__ == '__main__':
+  unittest.main()