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content/browser/renderer_host/render_widget_host_unittest.cc

 // Copyright (c) 2012 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 "base/basictypes.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/shared_memory.h"
 #include "base/timer.h"
 #include "content/browser/browser_thread_impl.h"
 #include "content/browser/renderer_host/backing_store.h"
@@ skipping 48 matching lines @@
   void set_update_msg_reply_flags(int flags) {
     update_msg_reply_flags_ = flags;
   }
 
   // Fills the given update parameters with resonable default values.
   void InitUpdateRectParams(ViewHostMsg_UpdateRect_Params* params);
 
   virtual bool HasConnection() const { return true; }
 
  protected:
-  virtual bool WaitForUpdateMsg(int render_widget_id,
-                                const base::TimeDelta& max_delay,
-                                IPC::Message* msg);
+  virtual bool WaitForBackingStoreMsg(int render_widget_id,
+                                      const base::TimeDelta& max_delay,
+                                      IPC::Message* msg);
 
   TransportDIB* current_update_buf_;
 
-  // Set to true when WaitForUpdateMsg should return a successful update message
-  // reply. False implies timeout.
+  // Set to true when WaitForBackingStoreMsg should return a successful update
+  // message reply. False implies timeout.
   bool update_msg_should_reply_;
 
   // Indicates the flags that should be sent with a the repaint request. This
   // only has an effect when update_msg_should_reply_ is true.
   int update_msg_reply_flags_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderWidgetHostProcess);
 };
 
 void RenderWidgetHostProcess::InitUpdateRectParams(
     ViewHostMsg_UpdateRect_Params* params) {
   // Create the shared backing store.
   const int w = 100, h = 100;
   const size_t pixel_size = w * h * 4;
 
   if (!current_update_buf_)
     current_update_buf_ = TransportDIB::Create(pixel_size, 0);
   params->bitmap = current_update_buf_->id();
   params->bitmap_rect = gfx::Rect(0, 0, w, h);
   params->dx = 0;
   params->dy = 0;
   params->copy_rects.push_back(params->bitmap_rect);
   params->view_size = gfx::Size(w, h);
   params->flags = update_msg_reply_flags_;
   params->needs_ack = true;
 }
 
-bool RenderWidgetHostProcess::WaitForUpdateMsg(int render_widget_id,
-                                               const base::TimeDelta& max_delay,
-                                               IPC::Message* msg) {
+bool RenderWidgetHostProcess::WaitForBackingStoreMsg(
+    int render_widget_id,
+    const base::TimeDelta& max_delay,
+    IPC::Message* msg) {
   if (!update_msg_should_reply_)
     return false;
 
   // Construct a fake update reply.
   ViewHostMsg_UpdateRect_Params params;
   InitUpdateRectParams(&params);
 
   ViewHostMsg_UpdateRect message(render_widget_id, params);
   *msg = message;
   return true;
@@ skipping 384 matching lines @@
 #endif
 
   // TODO(aa): It would be nice to factor out the painting logic so that we
   // could test that, but it appears that would mean painting everything twice
   // since windows HDC structures are opaque.
 }
 
 // Tests getting the backing store with the renderer not setting repaint ack
 // flags.
 TEST_F(RenderWidgetHostTest, GetBackingStore_NoRepaintAck) {
+  // First set the view size to match what the renderer is rendering.
+  ViewHostMsg_UpdateRect_Params params;
+  process_->InitUpdateRectParams(&params);
+  view_->set_bounds(gfx::Rect(params.view_size));
+
   // We don't currently have a backing store, and if the renderer doesn't send
   // one in time, we should get nothing.
   process_->set_update_msg_should_reply(false);
   BackingStore* backing = host_->GetBackingStore(true);
   EXPECT_FALSE(backing);
   // The widget host should have sent a request for a repaint, and there should
   // be no paint ACK.
   EXPECT_TRUE(process_->sink().GetUniqueMessageMatching(ViewMsg_Repaint::ID));
   EXPECT_FALSE(process_->sink().GetUniqueMessageMatching(
       ViewMsg_UpdateRect_ACK::ID));
 
   // Allowing the renderer to reply in time should give is a backing store.
   process_->sink().ClearMessages();
   process_->set_update_msg_should_reply(true);
   process_->set_update_msg_reply_flags(0);
   backing = host_->GetBackingStore(true);
   EXPECT_TRUE(backing);
   // The widget host should NOT have sent a request for a repaint, since there
   // was an ACK already pending.
   EXPECT_FALSE(process_->sink().GetUniqueMessageMatching(ViewMsg_Repaint::ID));
   EXPECT_TRUE(process_->sink().GetUniqueMessageMatching(
       ViewMsg_UpdateRect_ACK::ID));
 }
 
 // Tests getting the backing store with the renderer sending a repaint ack.
 TEST_F(RenderWidgetHostTest, GetBackingStore_RepaintAck) {
+  // First set the view size to match what the renderer is rendering.
+  ViewHostMsg_UpdateRect_Params params;
+  process_->InitUpdateRectParams(&params);
+  view_->set_bounds(gfx::Rect(params.view_size));
+
   // Doing a request request with the update message allowed should work and
   // the repaint ack should work.
   process_->set_update_msg_should_reply(true);
   process_->set_update_msg_reply_flags(
       ViewHostMsg_UpdateRect_Flags::IS_REPAINT_ACK);
   BackingStore* backing = host_->GetBackingStore(true);
   EXPECT_TRUE(backing);
   // We still should not have sent out a repaint request since the last flags
   // didn't have the repaint ack set, and the pending flag will still be set.
   EXPECT_TRUE(process_->sink().GetUniqueMessageMatching(ViewMsg_Repaint::ID));
@@ skipping 252 matching lines @@
   SimulateKeyboardEvent(WebInputEvent::RawKeyDown);
   SimulateKeyboardEvent(WebInputEvent::RawKeyDown);
   SendInputEventACK(WebInputEvent::RawKeyDown, true);
 
   // Wait long enough for first timeout and see if it fired.
   MessageLoop::current()->PostDelayedTask(
       FROM_HERE, MessageLoop::QuitClosure(), TimeDelta::FromMilliseconds(40));
   MessageLoop::current()->Run();
   EXPECT_TRUE(host_->unresponsive_timer_fired());
 }