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Telegram/ThirdParty/kcoreaddons/autotests/kautosavefiletest.cpp

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+/*
+    This file is part of the KDE libraries
+    SPDX-FileCopyrightText: 2006 Jacob R Rideout <kde@jacobrideout.net>
+
+    SPDX-License-Identifier: LGPL-2.0-or-later
+*/
+
+#include "kautosavefiletest.h"
+
+#include <QFile>
+#include <QTextStream>
+#include <QtAlgorithms>
+
+#include <QTemporaryFile>
+#include <kautosavefile.h>
+
+#include <QTest>
+
+QTEST_MAIN(KAutoSaveFileTest)
+
+void KAutoSaveFileTest::initTestCase()
+{
+    QCoreApplication::instance()->setApplicationName(QLatin1String("qttest")); // TODO do this in qtestlib itself
+}
+
+void KAutoSaveFileTest::cleanupTestCase()
+{
+    for (const QString &fileToRemove : std::as_const(filesToRemove)) {
+        QFile::remove(fileToRemove);
+    }
+}
+
+void KAutoSaveFileTest::test_readWrite()
+{
+    QTemporaryFile file;
+
+    QVERIFY(file.open());
+
+    QUrl normalFile = QUrl::fromLocalFile(QFileInfo(file).absoluteFilePath());
+
+    // Test basic functionality
+    KAutoSaveFile saveFile(normalFile);
+
+    QVERIFY(!QFile::exists(saveFile.fileName()));
+    QVERIFY(saveFile.open(QIODevice::ReadWrite));
+
+    QString inText = QString::fromLatin1("This is test data one.\n");
+
+    {
+        QTextStream ts(&saveFile);
+        ts << inText;
+        ts.flush();
+    }
+
+    saveFile.close();
+
+    {
+        QFile testReader(saveFile.fileName());
+        testReader.open(QIODevice::ReadWrite);
+        QTextStream ts(&testReader);
+
+        QString outText = ts.readAll();
+
+        QCOMPARE(outText, inText);
+    }
+
+    filesToRemove << file.fileName();
+}
+
+void KAutoSaveFileTest::test_fileNameMaxLength()
+{
+    // In KAutoSaveFilePrivate::tempFile() the name of the kautosavefile that's going to be created
+    // is concatanated in the form:
+    // fileName + junk.truncated + protocol + _ + path.truncated + junk
+    // see tempFile() for details.
+    //
+    // Make sure that the generated filename (e.g. as you would get from QUrl::fileName()) doesn't
+    // exceed NAME_MAX (the maximum length allowed for filenames, see e.g. /usr/include/linux/limits.h)
+    // otherwise the file can't be opened.
+    //
+    // see https://phabricator.kde.org/D24489
+
+    QString s;
+    s.fill(QLatin1Char('b'), 80);
+    // create a long path that:
+    // - exceeds NAME_MAX (255)
+    // - is less than the maximum allowed path length, PATH_MAX (4096)
+    //   see e.g. /usr/include/linux/limits.h
+    const QString path = QDir::tempPath() + QLatin1Char('/') + s + QLatin1Char('/') + s + QLatin1Char('/') + s + QLatin1Char('/') + s;
+
+    QFile file(path + QLatin1Char('/') + QLatin1String("testFile.txt"));
+
+    QUrl normalFile = QUrl::fromLocalFile(file.fileName());
+
+    KAutoSaveFile saveFile(normalFile);
+
+    QVERIFY(!QFile::exists(saveFile.fileName()));
+    QVERIFY(saveFile.open(QIODevice::ReadWrite));
+
+    filesToRemove << file.fileName();
+}
+
+void KAutoSaveFileTest::test_fileStaleFiles()
+{
+    QUrl normalFile = QUrl::fromLocalFile(QDir::temp().absoluteFilePath(QStringLiteral("test directory/tîst me.txt")));
+
+    KAutoSaveFile saveFile(normalFile);
+    QVERIFY(saveFile.open(QIODevice::ReadWrite));
+    saveFile.write("testdata");
+
+    // Make sure the stale file is found
+
+    const auto listOfStaleFiles = saveFile.staleFiles(normalFile, QStringLiteral("qttest"));
+    QVERIFY(listOfStaleFiles.count() == 1);
+    saveFile.releaseLock();
+    qDeleteAll(listOfStaleFiles);
+
+    // Make sure the stale file is deleted
+
+    QVERIFY(saveFile.staleFiles(normalFile, QStringLiteral("qttest")).isEmpty());
+}
+
+void KAutoSaveFileTest::test_applicationStaleFiles()
+{
+    // TODO
+}
+
+void KAutoSaveFileTest::test_locking()
+{
+    QUrl normalFile(QString::fromLatin1("fish://user@example.com/home/remote/test.txt"));
+
+    KAutoSaveFile saveFile(normalFile);
+
+    QVERIFY(!QFile::exists(saveFile.fileName()));
+    QVERIFY(saveFile.open(QIODevice::ReadWrite));
+
+    const QList<KAutoSaveFile *> staleFiles(KAutoSaveFile::staleFiles(normalFile));
+
+    QVERIFY(!staleFiles.isEmpty());
+
+    KAutoSaveFile *saveFile2 = staleFiles.at(0);
+
+    const QString fn = saveFile2->fileName();
+    // It looks like $XDG_DATA_HOME/stalefiles/qttest/test.txtXXXfish_%2Fhome%2FremoteXXXXXXX
+    QVERIFY2(fn.contains(QLatin1String("stalefiles/qttest/test.txt")), qPrintable(fn));
+    QVERIFY2(fn.contains(QLatin1String("fish_%2Fhome%2Fremote")), qPrintable(fn));
+
+    QVERIFY(QFile::exists(saveFile2->fileName()));
+    QVERIFY(!saveFile2->open(QIODevice::ReadWrite));
+
+    saveFile.releaseLock();
+
+    QVERIFY(saveFile2->open(QIODevice::ReadWrite));
+
+    qDeleteAll(staleFiles);
+}
+
+#include "moc_kautosavefiletest.cpp"