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/*
* qtmaildir - a Qt6 mail client for notmuch-indexed Maildirs
* Copyright (C) 2026 Danilo M. <danix@danix.xyz>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* 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, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include <QtTest>
#include <QDir>
#include <QFile>
#include <QTemporaryDir>
#include "calendarwriter.h"
namespace {
QByteArray read(const QString &path)
{
QFile f(path);
return f.open(QIODevice::ReadOnly) ? f.readAll() : QByteArray();
}
} // namespace
class TestCalendarWriter : public QObject
{
Q_OBJECT
private slots:
void createsAFileThatDidNotExist();
void refusesToCreateOverAnExistingFile();
void replacesWhenTheFileIsWhatWasExpected();
void refusesWhenTheFileChangedUnderneath();
void deletes();
void leavesNoTemporaryFileBehind();
};
void TestCalendarWriter::createsAFileThatDidNotExist()
{
QTemporaryDir dir;
const QString path = dir.filePath(QStringLiteral("a.ics"));
QString error;
QCOMPARE(CalendarWriter::replace(path, std::nullopt, QByteArray("new"), &error),
CalendarWriter::Result::Ok);
QCOMPARE(read(path), QByteArray("new"));
}
void TestCalendarWriter::refusesToCreateOverAnExistingFile()
{
QTemporaryDir dir;
const QString path = dir.filePath(QStringLiteral("a.ics"));
QFile f(path);
QVERIFY(f.open(QIODevice::WriteOnly));
f.write("synced in meanwhile");
f.close();
QString error;
QCOMPARE(CalendarWriter::replace(path, std::nullopt, QByteArray("new"), &error),
CalendarWriter::Result::Stale);
QCOMPARE(read(path), QByteArray("synced in meanwhile"));
}
void TestCalendarWriter::replacesWhenTheFileIsWhatWasExpected()
{
QTemporaryDir dir;
const QString path = dir.filePath(QStringLiteral("a.ics"));
QString error;
CalendarWriter::replace(path, std::nullopt, QByteArray("one"), &error);
QCOMPARE(CalendarWriter::replace(path, QByteArray("one"), QByteArray("two"), &error),
CalendarWriter::Result::Ok);
QCOMPARE(read(path), QByteArray("two"));
}
void TestCalendarWriter::refusesWhenTheFileChangedUnderneath()
{
QTemporaryDir dir;
const QString path = dir.filePath(QStringLiteral("a.ics"));
QString error;
CalendarWriter::replace(path, std::nullopt, QByteArray("synced"), &error);
// The caller loaded "one"; a sync wrote "synced" since. Nothing is clobbered.
QCOMPARE(CalendarWriter::replace(path, QByteArray("one"), QByteArray("two"), &error),
CalendarWriter::Result::Stale);
QCOMPARE(read(path), QByteArray("synced"));
// Also stale: expecting a file that a sync has removed.
QFile::remove(path);
QCOMPARE(CalendarWriter::replace(path, QByteArray("synced"), QByteArray("two"), &error),
CalendarWriter::Result::Stale);
QVERIFY(!QFile::exists(path));
}
void TestCalendarWriter::deletes()
{
QTemporaryDir dir;
const QString path = dir.filePath(QStringLiteral("a.ics"));
QString error;
CalendarWriter::replace(path, std::nullopt, QByteArray("one"), &error);
QCOMPARE(CalendarWriter::replace(path, QByteArray("one"), std::nullopt, &error),
CalendarWriter::Result::Ok);
QVERIFY(!QFile::exists(path));
}
void TestCalendarWriter::leavesNoTemporaryFileBehind()
{
QTemporaryDir dir;
const QString path = dir.filePath(QStringLiteral("a.ics"));
QString error;
CalendarWriter::replace(path, std::nullopt, QByteArray("one"), &error);
CalendarWriter::replace(path, QByteArray("one"), QByteArray("two"), &error);
QCOMPARE(QDir(dir.path()).entryList(QDir::Files | QDir::Hidden),
QStringList{ QStringLiteral("a.ics") });
}
QTEST_MAIN(TestCalendarWriter)
#include "test_calendarwriter.moc"
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