/*
 * Copyright (C) 2020, KylinSoft Co., Ltd.
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */

#include <QtTest/QtTest>
#include <QObject>
#include <QApplication>
#include <QPainter>
#include <QStyleOption>
#include <QModelIndex>
#include <QStandardItemModel>
#include <QAbstractItemDelegate>

// 简化的ChatSearchDelegate声明（不包含实际实现，只用于测试接口）
class ChatSearchDelegate : public QAbstractItemDelegate
{
    Q_OBJECT

public:
    ChatSearchDelegate(QObject *parent = nullptr) : QAbstractItemDelegate(parent) {}
    
    QSize sizeHint(const QStyleOptionViewItem &option, const QModelIndex &index) const override
    {
        Q_UNUSED(option);
        Q_UNUSED(index);
        return QSize(500, 80);
    }
    
    void paint(QPainter *painter, const QStyleOptionViewItem &option, const QModelIndex &index) const override
    {
        Q_UNUSED(painter);
        Q_UNUSED(option);
        Q_UNUSED(index);
        // 空实现，只用于测试接口
    }
};

// 测试类
class TestChatSearchDelegateStandalone : public QObject
{
    Q_OBJECT

private slots:
    // 在所有测试函数之前运行
    void initTestCase();
    
    // 在每个测试函数之前运行
    void init();
    
    // 测试构造函数
    void testConstructor();
    
    // 测试sizeHint方法
    void testSizeHint();
    
    // 测试paint方法（基本调用）
    void testPaint();
    
    // 在每个测试函数之后运行
    void cleanup();
    
    // 在所有测试函数之后运行
    void cleanupTestCase();

private:
    ChatSearchDelegate* m_chatSearchDelegate;
    QStandardItemModel* m_model;
};

// 测试初始化
void TestChatSearchDelegateStandalone::initTestCase()
{
    // 在所有测试开始前执行一次
}

// 每个测试前的初始化
void TestChatSearchDelegateStandalone::init()
{
    // 初始化测试环境
    m_chatSearchDelegate = new ChatSearchDelegate();
    m_model = new QStandardItemModel();
}

// 测试构造函数
void TestChatSearchDelegateStandalone::testConstructor()
{
    ChatSearchDelegate* delegate = new ChatSearchDelegate();
    QVERIFY(delegate != nullptr);
    delete delegate;
}

// 测试sizeHint方法
void TestChatSearchDelegateStandalone::testSizeHint()
{
    QStyleOptionViewItem option;
    QModelIndex index;
    
    QSize size = m_chatSearchDelegate->sizeHint(option, index);
    QCOMPARE(size.width(), 500);
    QCOMPARE(size.height(), 80);
}

// 测试paint方法（基本调用）
void TestChatSearchDelegateStandalone::testPaint()
{
    // 创建一个QPixmap用于绘制
    QPixmap pixmap(500, 80);
    pixmap.fill(Qt::transparent);
    QPainter painter(&pixmap);
    
    // 创建视图选项
    QStyleOptionViewItem option;
    option.rect = QRect(0, 0, 500, 80);
    
    // 创建模型项
    QStandardItem* item = new QStandardItem();
    m_model->appendRow(item);
    QModelIndex index = m_model->index(0, 0);
    
    // 调用paint方法，不应该抛出异常
    m_chatSearchDelegate->paint(&painter, option, index);
    
    // 验证绘制没有导致崩溃
    QVERIFY(!pixmap.isNull());
    
    // 清理
    m_model->removeRow(0);
}

// 每个测试后的清理
void TestChatSearchDelegateStandalone::cleanup()
{
    // 清理测试环境
    if (m_chatSearchDelegate) {
        delete m_chatSearchDelegate;
        m_chatSearchDelegate = nullptr;
    }
    
    if (m_model) {
        delete m_model;
        m_model = nullptr;
    }
}

// 测试结束后的清理
void TestChatSearchDelegateStandalone::cleanupTestCase()
{
    // 在所有测试结束后执行一次
}

QTEST_MAIN(TestChatSearchDelegateStandalone)
#include "test_chat_search_delegate_standalone.moc"