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// This file implements unit tests for class TreeTraveral.

#include "tests/common/win/testing_common.h"
#include "core/cross/tree_traversal.h"
#include "core/cross/object_manager.h"
#include "core/cross/pack.h"
#include "core/cross/service_dependency.h"
#include "core/cross/transformation_context.h"
#include "core/cross/draw_list_manager.h"

namespace o3d {

class TreeTraversalTest : public testing::Test {
 protected:
  TreeTraversalTest()
      : object_manager_(g_service_locator) {}

  virtual void SetUp();
  virtual void TearDown();

  Pack* pack() { return pack_; }

 private:
  ServiceDependency<ObjectManager> object_manager_;
  TransformationContext* transformation_context_;
  DrawListManager* draw_list_manager_;
  Pack *pack_;
};

void TreeTraversalTest::SetUp() {
  transformation_context_ = new TransformationContext(g_service_locator);
  draw_list_manager_ = new DrawListManager(g_service_locator);
  pack_ = object_manager_->CreatePack();
}

void TreeTraversalTest::TearDown() {
  pack_->Destroy();
  delete draw_list_manager_;
  delete transformation_context_;
}

TEST_F(TreeTraversalTest, Basic) {
  TreeTraversal* tree_traversal = pack()->Create<TreeTraversal>();
  // Check that tree_traversal got created.
  ASSERT_TRUE(tree_traversal != NULL);

  DrawList* draw_list1 = pack()->Create<DrawList>();
  DrawList* draw_list2 = pack()->Create<DrawList>();
  DrawList* draw_list3 = pack()->Create<DrawList>();
  DrawContext* draw_context = pack()->Create<DrawContext>();
  ASSERT_TRUE(draw_list1 != NULL);
  ASSERT_TRUE(draw_list2 != NULL);
  ASSERT_TRUE(draw_list3 != NULL);
  ASSERT_TRUE(draw_context != NULL);

  // Check that we can add and remove them
  tree_traversal->RegisterDrawList(draw_list1, draw_context, true);
  tree_traversal->RegisterDrawList(draw_list2, draw_context, true);

  EXPECT_FALSE(tree_traversal->UnregisterDrawList(draw_list3));
  EXPECT_TRUE(tree_traversal->UnregisterDrawList(draw_list1));
  EXPECT_FALSE(tree_traversal->UnregisterDrawList(draw_list1));
  EXPECT_TRUE(tree_traversal->UnregisterDrawList(draw_list2));
  EXPECT_FALSE(tree_traversal->UnregisterDrawList(draw_list3));
}

}  // namespace o3d