[Ozone] HardwareDisplayController unittests

ui/gfx/ozone/impl/hardware_display_controller_ozone_unittest.cc

+// Copyright (c) 2013 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 "testing/gtest/include/gtest/gtest.h"
+#include "ui/gfx/ozone/impl/drm_skbitmap_ozone.h"
+#include "ui/gfx/ozone/impl/drm_wrapper_ozone.h"
+#include "ui/gfx/ozone/impl/hardware_display_controller_ozone.h"
+#include "ui/gfx/ozone/impl/software_surface_ozone.h"
+
+namespace {
+
+// Create a basic mode for a 6x4 screen.
+const drmModeModeInfo kDefaultMode =
+    {0, 6, 0, 0, 0, 0, 4, 0, 0, 0, 0, 0, 0, 0, {'\0'}};
+
+// Mock file descriptor ID.
+const int kFd = 3;
+
+// Mock connector ID.
+const uint32_t kConnectorId = 1;
+
+// Mock CRTC ID.
+const uint32_t kCrtcId = 1;
+
+// The real DrmWrapper makes actual DRM calls which we can't use in unit tests.
+class MockDrmWrapperOzone : public gfx::DrmWrapperOzone {
+ public:
+  MockDrmWrapperOzone(int fd) : DrmWrapperOzone(""),
+                                get_crtc_call_count(0),
+                                free_crtc_call_count(0),
+                                restore_crtc_call_count(0),
+                                add_framebuffer_call_count(0),
+                                remove_framebuffer_call_count(0),
+                                set_crtc_expectation(true),
+                                add_framebuffer_expectation(true),
+                                page_flip_expectation(true) {
+    fd_ = fd;
+  }
+
+  virtual ~MockDrmWrapperOzone() { fd_ = -1; }
+
+  virtual drmModeCrtc* GetCrtc(uint32_t crtc_id) OVERRIDE {
+    get_crtc_call_count++;
+    return new drmModeCrtc;
+  }
+
+  virtual void FreeCrtc(drmModeCrtc* crtc) OVERRIDE {
+    free_crtc_call_count++;
+    delete crtc;
+  }
+
+  virtual bool SetCrtc(uint32_t crtc_id,
+                       uint32_t framebuffer,
+                       uint32_t* connectors,
+                       drmModeModeInfo* mode) OVERRIDE {
+    return set_crtc_expectation;
+  }
+
+  virtual bool SetCrtc(drmModeCrtc* crtc, uint32_t* connectors) OVERRIDE {
+    restore_crtc_call_count++;
+    return true;
+  }
+
+  virtual bool AddFramebuffer(const drmModeModeInfo& mode,
+                              uint8_t depth,
+                              uint8_t bpp,
+                              uint32_t stride,
+                              uint32_t handle,
+                              uint32_t* framebuffer) OVERRIDE {
+    add_framebuffer_call_count++;
+    return add_framebuffer_expectation;
+  }
+
+  virtual bool RemoveFramebuffer(uint32_t framebuffer) OVERRIDE {
+    remove_framebuffer_call_count++;
+    return true;
+  }
+
+  virtual bool PageFlip(uint32_t crtc_id,
+                        uint32_t framebuffer,
+                        void* data) OVERRIDE {
+    return page_flip_expectation;
+  }
+
+  int get_get_crtc_call_count() const {
+    return get_crtc_call_count;
+  }
+
+  int get_free_crtc_call_count() const {
+    return free_crtc_call_count;
+  }
+
+  int get_restore_crtc_call_count() const {
+    return restore_crtc_call_count;
+  }
+
+  int get_add_framebuffer_call_count() const {
+    return add_framebuffer_call_count;
+  }
+
+  int get_remove_framebuffer_call_count() const {
+    return remove_framebuffer_call_count;
+  }
+
+  void set_set_crtc_expectation(bool state) {
+    set_crtc_expectation = state;
+  }
+
+  void set_add_framebuffer_expectation(bool state) {
+    add_framebuffer_expectation = state;
+  }
+
+  void set_page_flip_expectation(bool state) {
+    page_flip_expectation = state;
+  }
+
+ private:
+  int get_crtc_call_count;
+  int free_crtc_call_count;
+  int restore_crtc_call_count;
+  int add_framebuffer_call_count;
+  int remove_framebuffer_call_count;
+
+  bool set_crtc_expectation;
+  bool add_framebuffer_expectation;
+  bool page_flip_expectation;
+
+  DISALLOW_COPY_AND_ASSIGN(MockDrmWrapperOzone);
+};
+
+class MockDrmSkBitmapOzone : public gfx::DrmSkBitmapOzone {
+ public:
+  MockDrmSkBitmapOzone(int fd) : DrmSkBitmapOzone(fd) {}
+  virtual ~MockDrmSkBitmapOzone() {}
+
+  virtual bool Initialize() OVERRIDE {
+    return allocPixels();
+  }
+ private:
+  DISALLOW_COPY_AND_ASSIGN(MockDrmSkBitmapOzone);
+};
+
+class MockSoftwareSurfaceOzone : public gfx::SoftwareSurfaceOzone {
+ public:
+  MockSoftwareSurfaceOzone(gfx::HardwareDisplayControllerOzone* controller)
+      : SoftwareSurfaceOzone(controller) {}
+  virtual ~MockSoftwareSurfaceOzone() {}
+
+ private:
+  virtual gfx::DrmSkBitmapOzone* CreateBuffer() OVERRIDE {
+    return new MockDrmSkBitmapOzone(kFd);
+  }
+  DISALLOW_COPY_AND_ASSIGN(MockSoftwareSurfaceOzone);
+};
+
+}  // namespace
+
+class HardwareDisplayControllerOzoneTest : public testing::Test {
+ public:
+  HardwareDisplayControllerOzoneTest() {}
+  virtual ~HardwareDisplayControllerOzoneTest() {}
+
+  virtual void SetUp() OVERRIDE;
+  virtual void TearDown() OVERRIDE;
+ protected:
+  scoped_ptr<gfx::HardwareDisplayControllerOzone> controller_;
+  scoped_ptr<MockDrmWrapperOzone> drm_;
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(HardwareDisplayControllerOzoneTest);
+};
+
+void HardwareDisplayControllerOzoneTest::SetUp() {
+  controller_.reset(new gfx::HardwareDisplayControllerOzone());
+  drm_.reset(new MockDrmWrapperOzone(kFd));
+}
+
+void HardwareDisplayControllerOzoneTest::TearDown() {
+  controller_.reset();
+  drm_.reset();
+}
+
+TEST_F(HardwareDisplayControllerOzoneTest, CheckInitialState) {
+  EXPECT_EQ(gfx::HardwareDisplayControllerOzone::UNASSOCIATED,
+            controller_->get_state());
+}
+
+TEST_F(HardwareDisplayControllerOzoneTest,
+       CheckStateAfterControllerIsInitialized) {
+  controller_->SetControllerInfo(
+      drm_.get(), kConnectorId, kCrtcId, kDefaultMode);
+
+  EXPECT_EQ(1, drm_->get_get_crtc_call_count());
+  EXPECT_EQ(gfx::HardwareDisplayControllerOzone::UNINITIALIZED,
+            controller_->get_state());
+}
+
+TEST_F(HardwareDisplayControllerOzoneTest, CheckStateAfterSurfaceIsBound) {
+  controller_->SetControllerInfo(
+      drm_.get(), kConnectorId, kCrtcId, kDefaultMode);
+  gfx::SoftwareSurfaceOzone* surface =
+      new MockSoftwareSurfaceOzone(controller_.get());
+
+  EXPECT_TRUE(surface->Initialize());
+  EXPECT_TRUE(controller_->BindSurfaceToController(surface));
+
+  EXPECT_EQ(2, drm_->get_add_framebuffer_call_count());
+  EXPECT_EQ(gfx::HardwareDisplayControllerOzone::SURFACE_INITIALIZED,
+            controller_->get_state());
+}
+
+TEST_F(HardwareDisplayControllerOzoneTest, CheckStateIfBindingFails) {
+  drm_->set_add_framebuffer_expectation(false);
+
+  controller_->SetControllerInfo(
+      drm_.get(), kConnectorId, kCrtcId, kDefaultMode);
+  gfx::SoftwareSurfaceOzone* surface =
+      new MockSoftwareSurfaceOzone(controller_.get());
+
+  EXPECT_TRUE(surface->Initialize());
+  EXPECT_FALSE(controller_->BindSurfaceToController(surface));
+
+  EXPECT_EQ(1, drm_->get_add_framebuffer_call_count());
+  EXPECT_EQ(gfx::HardwareDisplayControllerOzone::FAILED,
+            controller_->get_state());
+
+  // Normally the controller would take ownership, but we failed to bind, so we
+  // need to clean up.
+  delete surface;
+}
+
+TEST_F(HardwareDisplayControllerOzoneTest, CheckStateAfterPageFlip) {
+  controller_->SetControllerInfo(
+      drm_.get(), kConnectorId, kCrtcId, kDefaultMode);
+  gfx::SoftwareSurfaceOzone* surface =
+      new MockSoftwareSurfaceOzone(controller_.get());
+
+  EXPECT_TRUE(surface->Initialize());
+  EXPECT_TRUE(controller_->BindSurfaceToController(surface));
+
+  controller_->SchedulePageFlip();
+
+  EXPECT_EQ(gfx::HardwareDisplayControllerOzone::INITIALIZED,
+            controller_->get_state());
+}
+
+TEST_F(HardwareDisplayControllerOzoneTest, CheckStateIfModesetFails) {
+  drm_->set_set_crtc_expectation(false);
+
+  controller_->SetControllerInfo(
+      drm_.get(), kConnectorId, kCrtcId, kDefaultMode);
+  gfx::SoftwareSurfaceOzone* surface =
+      new MockSoftwareSurfaceOzone(controller_.get());
+
+  EXPECT_TRUE(surface->Initialize());
+  EXPECT_TRUE(controller_->BindSurfaceToController(surface));
+
+  controller_->SchedulePageFlip();
+
+  EXPECT_EQ(gfx::HardwareDisplayControllerOzone::FAILED,
+            controller_->get_state());
+}
+
+TEST_F(HardwareDisplayControllerOzoneTest, CheckStateIfPageFlipFails) {
+  drm_->set_page_flip_expectation(false);
+
+  controller_->SetControllerInfo(
+      drm_.get(), kConnectorId, kCrtcId, kDefaultMode);
+  gfx::SoftwareSurfaceOzone* surface =
+      new MockSoftwareSurfaceOzone(controller_.get());
+
+  EXPECT_TRUE(surface->Initialize());
+  EXPECT_TRUE(controller_->BindSurfaceToController(surface));
+
+  controller_->SchedulePageFlip();
+
+  EXPECT_EQ(gfx::HardwareDisplayControllerOzone::FAILED,
+            controller_->get_state());
+}
+
+TEST_F(HardwareDisplayControllerOzoneTest, CheckProperDestruction) {
+  controller_->SetControllerInfo(
+      drm_.get(), kConnectorId, kCrtcId, kDefaultMode);
+  gfx::SoftwareSurfaceOzone* surface =
+      new MockSoftwareSurfaceOzone(controller_.get());
+
+  EXPECT_TRUE(surface->Initialize());
+  EXPECT_TRUE(controller_->BindSurfaceToController(surface));
+
+  EXPECT_EQ(gfx::HardwareDisplayControllerOzone::SURFACE_INITIALIZED,
+            controller_->get_state());
+
+  controller_.reset();
+
+  EXPECT_EQ(2, drm_->get_remove_framebuffer_call_count());
+  EXPECT_EQ(1, drm_->get_restore_crtc_call_count());
+  EXPECT_EQ(1, drm_->get_free_crtc_call_count());
+}