// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0

#pragma once

#include <QAbstractItemModel>
#include <QObject>
#include <QStack>

class ModelTest : public QObject
{
    Q_OBJECT

public:
    ModelTest(QAbstractItemModel *model, QObject *parent = nullptr);

private Q_SLOTS:
    void nonDestructiveBasicTest();
    void rowCount();
    void columnCount();
    void hasIndex();
    void index();
    void parent();
    void data();

protected Q_SLOTS:
    void runAllTests();
    void layoutAboutToBeChanged();
    void layoutChanged();
    void rowsAboutToBeInserted(const QModelIndex &parent, int start, int end);
    void rowsInserted(const QModelIndex & parent, int start, int end);
    void rowsAboutToBeRemoved(const QModelIndex &parent, int start, int end);
    void rowsRemoved(const QModelIndex & parent, int start, int end);

private:
    void checkChildren(const QModelIndex &parent, int currentDepth = 0);

    QAbstractItemModel *model;

    struct Changing
    {
        QModelIndex parent;
        int oldSize;
        QVariant last;
        QVariant next;
    };
    QStack<Changing> insert;
    QStack<Changing> remove;

    bool fetchingMore = false;

    QList<QPersistentModelIndex> changing;
};