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/*
* Copyright 2014-2015 Canonical Ltd.
*
* This file is part of webbrowser-app.
*
* webbrowser-app 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; version 3.
*
* webbrowser-app 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 <http://www.gnu.org/licenses/>.
*/
// Qt
#include <QtCore/QAbstractListModel>
#include <QtCore/QStringList>
#include <QtTest/QSignalSpy>
#include <QtTest/QtTest>
// local
#include "limit-proxy-model.h"
class SimpleListModel : public QAbstractListModel {
Q_OBJECT
public:
enum Roles {
Index = Qt::UserRole + 1,
String
};
QHash<int, QByteArray> roleNames() const
{
static QHash<int, QByteArray> roles;
if (roles.isEmpty()) {
roles[Index] = "index";
roles[String] = "string";
}
return roles;
}
int rowCount(const QModelIndex& parent=QModelIndex()) const
{
return m_strings.count();
}
QVariant data(const QModelIndex& index, int role) const
{
if (!index.isValid()) {
return QVariant();
}
switch (role) {
case Index:
return index.row();
case String:
return m_strings.at(index.row());
default:
return QVariant();
}
}
void append(const QStringList& strings)
{
int index = m_strings.count();
beginInsertRows(QModelIndex(), index, index + strings.count() - 1);
m_strings << strings;
endInsertRows();
}
void remove(int index)
{
beginRemoveRows(QModelIndex(), index, index);
m_strings.removeAt(index);
endRemoveRows();
}
private:
QStringList m_strings;
};
class LimitProxyModelTests : public QObject
{
Q_OBJECT
private:
SimpleListModel* strings;
LimitProxyModel* model;
private Q_SLOTS:
void init()
{
strings = new SimpleListModel;
model = new LimitProxyModel;
model->setSourceModel(strings);
}
void cleanup()
{
delete model;
delete strings;
}
void shouldBeInitiallyEmpty()
{
QCOMPARE(model->rowCount(), 0);
}
void shouldLimitBeInitiallyMinusOne()
{
QCOMPARE(model->limit(), -1);
}
void shouldNotifyWhenChangingSourceModel()
{
QSignalSpy spy(model, SIGNAL(sourceModelChanged()));
model->setSourceModel(strings);
QVERIFY(spy.isEmpty());
QStringListModel strings2;
model->setSourceModel(&strings2);
QCOMPARE(spy.count(), 1);
QCOMPARE(model->sourceModel(), &strings2);
model->setSourceModel(0);
QCOMPARE(spy.count(), 2);
QCOMPARE(model->sourceModel(), (QAbstractItemModel*) 0);
}
void shouldLimitEntriesWithLimitSetBeforePopulating()
{
model->setLimit(2);
strings->append({"a", "b", "c"});
QCOMPARE(model->rowCount(), 2);
QCOMPARE(model->unlimitedRowCount(), 3);
}
void shouldLimitEntriesWithLimitSetAfterPopulating()
{
strings->append({"a", "b", "c"});
model->setLimit(2);
QCOMPARE(model->rowCount(), 2);
QCOMPARE(model->unlimitedRowCount(), 3);
}
void shouldNotLimitEntriesIfLimitIsMinusOne()
{
model->setLimit(-1);
strings->append({"a", "b", "c"});
QCOMPARE(model->unlimitedRowCount(), 3);
QCOMPARE(model->rowCount(), model->unlimitedRowCount());
}
void shouldNotLimitEntriesIfLimitIsGreaterThanRowCount()
{
model->setLimit(4);
strings->append({"a", "b", "c"});
QCOMPARE(model->unlimitedRowCount(), 3);
QCOMPARE(model->rowCount(), model->unlimitedRowCount());
}
void shouldUpdateRowCountAndNotifyAfterAnEntryIsRemoved()
{
model->setLimit(2);
strings->append({"a", "b", "c", "d"});
QSignalSpy spyChanged(model, SIGNAL(dataChanged(const QModelIndex&, const QModelIndex&, const QVector<int>&)));
QSignalSpy spyRemoved(model, SIGNAL(rowsRemoved(QModelIndex, int, int)));
strings->remove(0);
QCOMPARE(spyChanged.count(), 1);
QVERIFY(spyRemoved.isEmpty());
QCOMPARE(model->data(model->index(0, 0), SimpleListModel::String).toString(), QString("b"));
QCOMPARE(model->data(model->index(1, 0), SimpleListModel::String).toString(), QString("c"));
QCOMPARE(model->unlimitedRowCount(), 3);
QCOMPARE(model->rowCount(), 2);
}
void shouldGetItemWithCorrectValues()
{
strings->append({"a"});
QVariantMap item = model->get(0);
QHash<int, QByteArray> roles = model->roleNames();
QCOMPARE(roles.count(), item.count());
Q_FOREACH(int role, roles.keys()) {
QString roleName = QString::fromUtf8(roles.value(role));
QCOMPARE(model->data(model->index(0, 0), role), item.value(roleName));
}
}
void shouldReturnEmptyItemIfGetOutOfBounds()
{
QVariantMap item = model->get(1);
QVERIFY(item.isEmpty());
}
};
QTEST_MAIN(LimitProxyModelTests)
#include "tst_LimitProxyModelTests.moc"
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