/* Tencent is pleased to support the open source community by making Hippy available.
 * Copyright (C) 2018 THL A29 Limited, a Tencent company. All rights reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#include <Hippy.h>
#include <gtest.h>

static void _dirtied(HPNodeRef node) {
  int* dirtiedCount = (int*)node->getContext();
  (*dirtiedCount)++;
}

TEST(HippyTest, dirtied) {
  const HPNodeRef root = HPNodeNew();
  HPNodeStyleSetAlignItems(root, FlexAlignStart);
  HPNodeStyleSetWidth(root, 100);
  HPNodeStyleSetHeight(root, 100);

  HPNodeDoLayout(root, VALUE_UNDEFINED, VALUE_UNDEFINED);

  int dirtiedCount = 0;
  root->setContext(&dirtiedCount);
  root->setDirtiedFunc(_dirtied);

  ASSERT_EQ(0, dirtiedCount);

  // `_dirtied` MUST be called in case of explicit dirtying.
  root->setDirty(true);
  ASSERT_EQ(1, dirtiedCount);

  // `_dirtied` MUST be called ONCE.
  root->setDirty(true);
  ASSERT_EQ(1, dirtiedCount);
}

TEST(HippyTest, dirtied_propagation) {
  const HPNodeRef root = HPNodeNew();
  HPNodeStyleSetAlignItems(root, FlexAlignStart);
  HPNodeStyleSetWidth(root, 100);
  HPNodeStyleSetHeight(root, 100);

  const HPNodeRef root_child0 = HPNodeNew();
  HPNodeStyleSetWidth(root_child0, 50);
  HPNodeStyleSetHeight(root_child0, 20);
  HPNodeInsertChild(root, root_child0, 0);

  const HPNodeRef root_child1 = HPNodeNew();
  HPNodeStyleSetWidth(root_child1, 50);
  HPNodeStyleSetHeight(root_child1, 20);
  HPNodeInsertChild(root, root_child1, 1);

  HPNodeDoLayout(root, VALUE_UNDEFINED, VALUE_UNDEFINED);

  int dirtiedCount = 0;
  root->setContext(&dirtiedCount);
  root->setDirtiedFunc(_dirtied);

  ASSERT_EQ(0, dirtiedCount);

  // `_dirtied` MUST be called for the first time.
  root_child0->markAsDirty();
  ASSERT_EQ(1, dirtiedCount);

  // `_dirtied` must NOT be called for the second time.
  root_child0->markAsDirty();
  ASSERT_EQ(1, dirtiedCount);
}

TEST(HippyTest, dirtied_hierarchy) {
  const HPNodeRef root = HPNodeNew();
  HPNodeStyleSetAlignItems(root, FlexAlignStart);
  HPNodeStyleSetWidth(root, 100);
  HPNodeStyleSetHeight(root, 100);

  const HPNodeRef root_child0 = HPNodeNew();
  HPNodeStyleSetWidth(root_child0, 50);
  HPNodeStyleSetHeight(root_child0, 20);
  HPNodeInsertChild(root, root_child0, 0);

  const HPNodeRef root_child1 = HPNodeNew();
  HPNodeStyleSetWidth(root_child1, 50);
  HPNodeStyleSetHeight(root_child1, 20);
  HPNodeInsertChild(root, root_child1, 1);

  HPNodeDoLayout(root, VALUE_UNDEFINED, VALUE_UNDEFINED);

  int dirtiedCount = 0;
  root_child0->setContext(&dirtiedCount);
  root_child0->setDirtiedFunc(_dirtied);

  ASSERT_EQ(0, dirtiedCount);

  // `_dirtied` must NOT be called for descendants.
  root->markAsDirty();
  ASSERT_EQ(0, dirtiedCount);

  // `_dirtied` must NOT be called for the sibling node.
  root_child1->markAsDirty();
  ASSERT_EQ(0, dirtiedCount);

  // `_dirtied` MUST be called in case of explicit dirtying.
  root_child0->markAsDirty();
  ASSERT_EQ(1, dirtiedCount);
}