Add/remove surface references via MojoCompositorFrameSink.

services/ui/surfaces/display_compositor_unittest.cc

 // Copyright 2016 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 "services/ui/surfaces/display_compositor.h"
 
 #include <inttypes.h>
 
 #include <string>
 #include <utility>
 
 #include "base/logging.h"
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
 #include "base/strings/stringprintf.h"
 #include "cc/ipc/display_compositor.mojom.h"
 #include "cc/surfaces/surface_id.h"
 #include "cc/surfaces/surface_observer.h"
+#include "cc/surfaces/surface_reference.h"
 #include "mojo/public/cpp/bindings/binding.h"
 #include "mojo/public/cpp/bindings/interface_request.h"
 #include "services/ui/common/task_runner_test_base.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "ui/gfx/geometry/size.h"
 
 namespace ui {
 namespace test {
 namespace {
 
@@ skipping 29 matching lines @@
   }
 
  private:
   void AddEvent(const std::string& text) {
     if (!events_.empty())
       events_ += ";";
     events_ += text;
   }
 
   // cc::mojom::DisplayCompositorClient:
+  void OnDisplayCompositorCreated(
+      const cc::SurfaceId& root_surface_id) override {
+    got_root_surface_id_ = true;
+  }
+
   void OnSurfaceCreated(const cc::SurfaceId& surface_id,
                         const gfx::Size& frame_size,
                         float device_scale_factor) override {
+    EXPECT_TRUE(got_root_surface_id_);
     AddEvent(base::StringPrintf("OnSurfaceCreated(%s)",
                                 SurfaceIdString(surface_id).c_str()));
   }
 
   mojo::Binding<cc::mojom::DisplayCompositorClient> binding_;
   std::string events_;
+  bool got_root_surface_id_ = false;
 
   DISALLOW_COPY_AND_ASSIGN(TestDisplayCompositorClient);
 };
 
 // Test SurfaceReferenceManager that records AddSurfaceReference() and
 // RemoveSurfaceReference() events.
 class TestSurfaceReferenceManager : public cc::SurfaceReferenceManager {
  public:
   ~TestSurfaceReferenceManager() override {}
 
@@ skipping 45 matching lines @@
 
 }  // namespace
 
 class DisplayCompositorTest : public TaskRunnerTestBase {
  public:
   DisplayCompositorTest() {}
   ~DisplayCompositorTest() override {}
 
   cc::SurfaceObserver* surface_observer() { return display_compositor_.get(); }
 
+  const cc::SurfaceId& GetRootSurfaceId() const {
+    return reference_manager_.GetRootSurfaceId();
+  }
+
+  void AddSurfaceReference(const cc::SurfaceId& parent_id,
+                           const cc::SurfaceId& child_id) {
+    display_compositor_->AddSurfaceReferences(std::vector<cc::SurfaceReference>{
+        cc::SurfaceReference(parent_id, child_id)});
+  }
+
   // Returns the total number of temporary references held by DisplayCompositor.
   size_t CountTempReferences() {
     size_t size = 0;
     for (auto& map_entry : display_compositor_->temp_references_) {
       size += map_entry.second.size();
     }
     return size;
   }
 
   // TaskRunnerTestBase:
@@ skipping 23 matching lines @@
   const cc::SurfaceId parent_id = MakeSurfaceId(1, 1, 1);
   const cc::SurfaceId surface_id = MakeSurfaceId(2, 1, 1);
   surface_observer()->OnSurfaceCreated(surface_id, gfx::Size(1, 1), 1.0f);
   RunUntilIdle();
 
   // Client should get OnSurfaceCreated call and temporary reference added.
   EXPECT_EQ("OnSurfaceCreated(2:1:1)", client_.events());
   EXPECT_EQ("Add(0:0:0-2:1:1)", reference_manager_.events());
   EXPECT_EQ(1u, CountTempReferences());
 
-  display_compositor_->AddSurfaceReference(parent_id, surface_id);
+  AddSurfaceReference(parent_id, surface_id);
   RunUntilIdle();
 
   // Real reference is added then temporary reference removed.
   EXPECT_EQ("Add(1:1:1-2:1:1);Remove(0:0:0-2:1:1)",
             reference_manager_.events());
   EXPECT_EQ(0u, CountTempReferences());
 }
 
 TEST_F(DisplayCompositorTest, AddSurfaceThenRootReference) {
   const cc::SurfaceId surface_id = MakeSurfaceId(1, 1, 1);
   surface_observer()->OnSurfaceCreated(surface_id, gfx::Size(1, 1), 1.0f);
   RunUntilIdle();
 
   // Temporary reference should be added.
   EXPECT_EQ("Add(0:0:0-1:1:1)", reference_manager_.events());
   EXPECT_EQ(1u, CountTempReferences());
 
-  display_compositor_->AddRootSurfaceReference(surface_id);
+  AddSurfaceReference(GetRootSurfaceId(), surface_id);
   RunUntilIdle();
 
   // Adding real reference doesn't need to change anything in
   // SurfaceReferenceManager does remove the temporary reference marker.
   EXPECT_EQ("", reference_manager_.events());
   EXPECT_EQ(0u, CountTempReferences());
 }
 
 TEST_F(DisplayCompositorTest, AddTwoSurfacesThenOneReference) {
   const cc::SurfaceId parent_id = MakeSurfaceId(1, 1, 1);
   const cc::SurfaceId surface_id1 = MakeSurfaceId(2, 1, 1);
   const cc::SurfaceId surface_id2 = MakeSurfaceId(3, 1, 1);
 
   // Add two surfaces with different FrameSinkIds.
   surface_observer()->OnSurfaceCreated(surface_id1, gfx::Size(1, 1), 1.0f);
   surface_observer()->OnSurfaceCreated(surface_id2, gfx::Size(1, 1), 1.0f);
   RunUntilIdle();
 
   // Temporary reference should be added for both surfaces.
   EXPECT_EQ("Add(0:0:0-2:1:1);Add(0:0:0-3:1:1)", reference_manager_.events());
   EXPECT_EQ(2u, CountTempReferences());
 
-  display_compositor_->AddSurfaceReference(parent_id, surface_id1);
+  AddSurfaceReference(parent_id, surface_id1);
   RunUntilIdle();
 
   // Real reference is added then temporary reference removed for 2:1:1. There
   // should still be a temporary reference left to 3:1:1
   EXPECT_EQ("Add(1:1:1-2:1:1);Remove(0:0:0-2:1:1)",
             reference_manager_.events());
   EXPECT_EQ(1u, CountTempReferences());
 }
 
 TEST_F(DisplayCompositorTest, AddSurfacesSkipReference) {
   const cc::SurfaceId parent_id = MakeSurfaceId(1, 1, 1);
   const cc::SurfaceId surface_id1 = MakeSurfaceId(2, 1, 1);
   const cc::SurfaceId surface_id2 = MakeSurfaceId(2, 1, 2);
 
   // Add two surfaces that have the same FrameSinkId. This would happen when a
   // client submits two CFs before parent submits a new CF.
   surface_observer()->OnSurfaceCreated(surface_id1, gfx::Size(1, 1), 1.0f);
   surface_observer()->OnSurfaceCreated(surface_id2, gfx::Size(1, 1), 1.0f);
   RunUntilIdle();
 
   // Client should get OnSurfaceCreated call and temporary reference added for
   // both surfaces.
   EXPECT_EQ("OnSurfaceCreated(2:1:1);OnSurfaceCreated(2:1:2)",
             client_.events());
   EXPECT_EQ("Add(0:0:0-2:1:1);Add(0:0:0-2:1:2)", reference_manager_.events());
   EXPECT_EQ(2u, CountTempReferences());
 
   // Add a reference to the surface with the later LocalFrameId.
-  display_compositor_->AddSurfaceReference(parent_id, surface_id2);
+  AddSurfaceReference(parent_id, surface_id2);
   RunUntilIdle();
 
   // The real reference should be added for 2:1:2 and both temporary references
   // should be removed.
   EXPECT_EQ("Add(1:1:1-2:1:2);Remove(0:0:0-2:1:2);Remove(0:0:0-2:1:1)",
             reference_manager_.events());
   EXPECT_EQ(0u, CountTempReferences());
 }
 
 }  // namespace test
 }  // namespace ui