src/content/browser/renderer_host/pepper/pepper_gamepad_host_unittest.cc

   1 // Copyright (c) 2012 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 <string.h>
   6
   7 #include "base/memory/scoped_ptr.h"
   8 #include "base/memory/weak_ptr.h"
   9 #include "content/browser/gamepad/gamepad_test_helpers.h"
  10 #include "content/browser/renderer_host/pepper/browser_ppapi_host_test.h"
  11 #include "content/browser/renderer_host/pepper/pepper_gamepad_host.h"
  12 #include "content/common/gamepad_hardware_buffer.h"
  13 #include "ppapi/c/pp_errors.h"
  14 #include "ppapi/host/host_message_context.h"
  15 #include "ppapi/proxy/gamepad_resource.h"
  16 #include "ppapi/proxy/ppapi_messages.h"
  17 #include "ppapi/proxy/resource_message_params.h"
  18 #include "ppapi/shared_impl/ppb_gamepad_shared.h"
  19 #include "testing/gtest/include/gtest/gtest.h"
  20
  21 namespace content {
  22
  23 namespace {
  24
  25 class PepperGamepadHostTest : public testing::Test,
  26                               public BrowserPpapiHostTest {
  27  public:
  28   PepperGamepadHostTest() {}
  29   virtual ~PepperGamepadHostTest() {}
  30
  31   void ConstructService(const blink::WebGamepads& test_data) {
  32     service_.reset(new GamepadServiceTestConstructor(test_data));
  33   }
  34
  35   GamepadService* gamepad_service() { return service_->gamepad_service(); }
  36
  37  protected:
  38   scoped_ptr<GamepadServiceTestConstructor> service_;
  39
  40   DISALLOW_COPY_AND_ASSIGN(PepperGamepadHostTest);
  41 };
  42
  43 inline ptrdiff_t AddressDiff(const void* a, const void* b) {
  44   return static_cast<const char*>(a) - static_cast<const char*>(b);
  45 }
  46
  47 }  // namespace
  48
  49 // Validate the memory layout of the Pepper proxy struct matches the content
  50 // one. The proxy can't depend on content so has a duplicate definition. This
  51 // code can see both definitions so we do the validation here.
  52 TEST_F(PepperGamepadHostTest, ValidateHardwareBuffersMatch) {
  53   // Hardware buffer.
  54   COMPILE_ASSERT(sizeof(ppapi::ContentGamepadHardwareBuffer) ==
  55                      sizeof(GamepadHardwareBuffer),
  56                  gamepad_hardware_buffers_must_match);
  57   ppapi::ContentGamepadHardwareBuffer ppapi_buf;
  58   GamepadHardwareBuffer content_buf;
  59   EXPECT_EQ(AddressDiff(&content_buf.sequence, &content_buf),
  60             AddressDiff(&ppapi_buf.sequence, &ppapi_buf));
  61   EXPECT_EQ(AddressDiff(&content_buf.buffer, &content_buf),
  62             AddressDiff(&ppapi_buf.buffer, &ppapi_buf));
  63 }
  64
  65 TEST_F(PepperGamepadHostTest, ValidateGamepadsMatch) {
  66   // Gamepads.
  67   COMPILE_ASSERT(sizeof(ppapi::WebKitGamepads) == sizeof(blink::WebGamepads),
  68                  gamepads_data_must_match);
  69   ppapi::WebKitGamepads ppapi_gamepads;
  70   blink::WebGamepads web_gamepads;
  71   EXPECT_EQ(AddressDiff(&web_gamepads.length, &web_gamepads),
  72             AddressDiff(&ppapi_gamepads.length, &ppapi_gamepads));
  73
  74   // See comment below on storage & the EXPECT macro.
  75   size_t webkit_items_length_cap = blink::WebGamepads::itemsLengthCap;
  76   size_t ppapi_items_length_cap = ppapi::WebKitGamepads::kItemsLengthCap;
  77   EXPECT_EQ(webkit_items_length_cap, ppapi_items_length_cap);
  78
  79   for (size_t i = 0; i < web_gamepads.itemsLengthCap; i++) {
  80     EXPECT_EQ(AddressDiff(&web_gamepads.items[0], &web_gamepads),
  81               AddressDiff(&ppapi_gamepads.items[0], &ppapi_gamepads));
  82   }
  83 }
  84
  85 TEST_F(PepperGamepadHostTest, ValidateGamepadMatch) {
  86   // Gamepad.
  87   COMPILE_ASSERT(sizeof(ppapi::WebKitGamepad) == sizeof(blink::WebGamepad),
  88                  gamepad_data_must_match);
  89   ppapi::WebKitGamepad ppapi_gamepad;
  90   blink::WebGamepad web_gamepad;
  91
  92   // Using EXPECT seems to force storage for the parameter, which the constants
  93   // in the WebKit/PPAPI headers don't have. So we have to use temporaries
  94   // before comparing them.
  95   size_t webkit_id_length_cap = blink::WebGamepad::idLengthCap;
  96   size_t ppapi_id_length_cap = ppapi::WebKitGamepad::kIdLengthCap;
  97   EXPECT_EQ(webkit_id_length_cap, ppapi_id_length_cap);
  98
  99   size_t webkit_axes_length_cap = blink::WebGamepad::axesLengthCap;
 100   size_t ppapi_axes_length_cap = ppapi::WebKitGamepad::kAxesLengthCap;
 101   EXPECT_EQ(webkit_axes_length_cap, ppapi_axes_length_cap);
 102
 103   size_t webkit_buttons_length_cap = blink::WebGamepad::buttonsLengthCap;
 104   size_t ppapi_buttons_length_cap = ppapi::WebKitGamepad::kButtonsLengthCap;
 105   EXPECT_EQ(webkit_buttons_length_cap, ppapi_buttons_length_cap);
 106
 107   EXPECT_EQ(AddressDiff(&web_gamepad.connected, &web_gamepad),
 108             AddressDiff(&ppapi_gamepad.connected, &ppapi_gamepad));
 109   EXPECT_EQ(AddressDiff(&web_gamepad.id, &web_gamepad),
 110             AddressDiff(&ppapi_gamepad.id, &ppapi_gamepad));
 111   EXPECT_EQ(AddressDiff(&web_gamepad.timestamp, &web_gamepad),
 112             AddressDiff(&ppapi_gamepad.timestamp, &ppapi_gamepad));
 113   EXPECT_EQ(AddressDiff(&web_gamepad.axesLength, &web_gamepad),
 114             AddressDiff(&ppapi_gamepad.axes_length, &ppapi_gamepad));
 115   EXPECT_EQ(AddressDiff(&web_gamepad.axes, &web_gamepad),
 116             AddressDiff(&ppapi_gamepad.axes, &ppapi_gamepad));
 117   EXPECT_EQ(AddressDiff(&web_gamepad.buttonsLength, &web_gamepad),
 118             AddressDiff(&ppapi_gamepad.buttons_length, &ppapi_gamepad));
 119   EXPECT_EQ(AddressDiff(&web_gamepad.buttons, &web_gamepad),
 120             AddressDiff(&ppapi_gamepad.buttons, &ppapi_gamepad));
 121 }
 122
 123 TEST_F(PepperGamepadHostTest, WaitForReply) {
 124   blink::WebGamepads default_data;
 125   memset(&default_data, 0, sizeof(blink::WebGamepads));
 126   default_data.length = 1;
 127   default_data.items[0].connected = true;
 128   default_data.items[0].buttonsLength = 1;
 129   ConstructService(default_data);
 130
 131   PP_Instance pp_instance = 12345;
 132   PP_Resource pp_resource = 67890;
 133   PepperGamepadHost gamepad_host(
 134       gamepad_service(), GetBrowserPpapiHost(), pp_instance, pp_resource);
 135
 136   // Synthesize a request for gamepad data.
 137   ppapi::host::HostMessageContext context(
 138       ppapi::proxy::ResourceMessageCallParams(pp_resource, 1));
 139   EXPECT_EQ(PP_OK_COMPLETIONPENDING,
 140             gamepad_host.OnResourceMessageReceived(
 141                 PpapiHostMsg_Gamepad_RequestMemory(), &context));
 142
 143   // Wait for the gamepad background thread to read twice to make sure we
 144   // don't get a message yet (see below for why).
 145   MockGamepadDataFetcher* fetcher = service_->data_fetcher();
 146   fetcher->WaitForDataRead();
 147   fetcher->WaitForDataRead();
 148
 149   // It should not have sent the callback message.
 150   service_->message_loop().RunUntilIdle();
 151   EXPECT_EQ(0u, sink().message_count());
 152
 153   // Set a button down and wait for it to be read twice.
 154   //
 155   // We wait for two reads before calling RunAllPending because the provider
 156   // will read the data on the background thread (setting the event) and *then*
 157   // will issue the callback on our thread. Waiting for it to read twice
 158   // ensures that it was able to issue callbacks for the first read (if it
 159   // issued one) before we try to check for it.
 160   blink::WebGamepads button_down_data = default_data;
 161   button_down_data.items[0].buttons[0].value = 1.f;
 162   button_down_data.items[0].buttons[0].pressed = true;
 163   fetcher->SetTestData(button_down_data);
 164   fetcher->WaitForDataRead();
 165   fetcher->WaitForDataRead();
 166
 167   // It should have sent a callback.
 168   service_->message_loop().RunUntilIdle();
 169   ppapi::proxy::ResourceMessageReplyParams reply_params;
 170   IPC::Message reply_msg;
 171   ASSERT_TRUE(sink().GetFirstResourceReplyMatching(
 172       PpapiPluginMsg_Gamepad_SendMemory::ID, &reply_params, &reply_msg));
 173
 174   // Extract the shared memory handle.
 175   base::SharedMemoryHandle reply_handle;
 176   EXPECT_TRUE(reply_params.TakeSharedMemoryHandleAtIndex(0, &reply_handle));
 177
 178   // Validate the shared memory.
 179   base::SharedMemory shared_memory(reply_handle, true);
 180   EXPECT_TRUE(shared_memory.Map(sizeof(ppapi::ContentGamepadHardwareBuffer)));
 181   const ppapi::ContentGamepadHardwareBuffer* buffer =
 182       static_cast<const ppapi::ContentGamepadHardwareBuffer*>(
 183           shared_memory.memory());
 184   EXPECT_EQ(button_down_data.length, buffer->buffer.length);
 185   EXPECT_EQ(button_down_data.items[0].buttonsLength,
 186             buffer->buffer.items[0].buttons_length);
 187   for (size_t i = 0; i < ppapi::WebKitGamepad::kButtonsLengthCap; i++) {
 188     EXPECT_EQ(button_down_data.items[0].buttons[i].value,
 189               buffer->buffer.items[0].buttons[i].value);
 190     EXPECT_EQ(button_down_data.items[0].buttons[i].pressed,
 191               buffer->buffer.items[0].buttons[i].pressed);
 192   }
 193
 194   // Duplicate requests should be denied.
 195   EXPECT_EQ(PP_ERROR_FAILED,
 196             gamepad_host.OnResourceMessageReceived(
 197                 PpapiHostMsg_Gamepad_RequestMemory(), &context));
 198 }
 199
 200 }  // namespace content