tests/auto/*: port Q_FOREACH to ranged-for

The loop was iterating over a temporary container, so it couldn't have
changed it. Store the container in a const auto variable and use
ranged-for.

In files where Q_FOREACH isn't used any more, remove
"#undef QT_NO_FOREACH".

Task-number: QTBUG-115839
Change-Id: I402df5fa48f4287f3cc989ddae1524da43999049
Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io>

tests/auto/corelib/io/qfile/tst_qfile.cpp

@@ -410,7 +410,8 @@ void tst_QFile::cleanup()
 
     // Clean out everything except the readonly-files.
     const QDir dir(m_temporaryDir.path());
-    foreach (const QFileInfo &fi, dir.entryInfoList(QDir::AllEntries | QDir::NoDotAndDotDot)) {
+    const auto entries = dir.entryInfoList(QDir::AllEntries | QDir::NoDotAndDotDot);
+    for (const QFileInfo &fi : entries) {
         const QString fileName = fi.fileName();
         if (fileName != QLatin1String(noReadFile) && fileName != QLatin1String(readOnlyFile)) {
             const QString absoluteFilePath = fi.absoluteFilePath();

tests/auto/corelib/io/qfileinfo/tst_qfileinfo.cpp

@@ -1,8 +1,6 @@
 // Copyright (C) 2021 The Qt Company Ltd.
 // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
 
-#undef QT_NO_FOREACH // this file contains unported legacy Q_FOREACH uses
-
 #include <QTest>
 #include <QStandardPaths>
 #include <QScopeGuard>
@@ -1520,9 +1518,9 @@ void tst_QFileInfo::isHidden_data()
 {
     QTest::addColumn<QString>("path");
     QTest::addColumn<bool>("isHidden");
-    foreach (const QFileInfo& info, QDir::drives()) {
+    const auto drives = QDir::drives();
+    for (const QFileInfo& info : drives)
         QTest::newRow(qPrintable("drive." + info.path())) << info.path() << false;
-    }
 
 #if defined(Q_OS_WIN)
     QVERIFY(QDir("./hidden-directory").exists() || QDir().mkdir("./hidden-directory"));

tests/auto/corelib/io/qfileselector/tst_qfileselector.cpp

@@ -1,8 +1,6 @@
 // Copyright (C) 2013 BlackBerry Limited. All rights reserved.
 // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
 
-#undef QT_NO_FOREACH // this file contains unported legacy Q_FOREACH uses
-
 #include <QTest>
 #include <qplatformdefs.h>
 
@@ -76,7 +74,8 @@ void tst_QFileSelector::basicTest_data()
 #  if (defined(Q_OS_LINUX) && !defined(Q_OS_ANDROID)) || defined(Q_OS_FREEBSD)
     distributionName = QSysInfo::productType();
 #  endif
-    foreach (const QString &selector, QFileSelectorPrivate::platformSelectors()) {
+    const auto platformSelectors = QFileSelectorPrivate::platformSelectors();
+    for (const QString &selector : platformSelectors) {
         // skip the Linux distribution name (if any) since we don't have files for them
         if (selector == distributionName)
             continue;

tests/auto/corelib/io/qfilesystemwatcher/tst_qfilesystemwatcher.cpp

@@ -739,7 +739,8 @@ public slots:
         QCOMPARE(finfo.absolutePath(), moveSrcDir.absolutePath());
 
         if (!added) {
-            foreach (const QFileInfo &fi, moveDestination.entryInfoList(QDir::Files | QDir::NoSymLinks))
+            const auto entries = moveDestination.entryInfoList(QDir::Files | QDir::NoSymLinks);
+            for (const QFileInfo &fi : entries)
                 watcher->addPath(fi.absoluteFilePath());
             added = true;
         }
@@ -793,7 +794,7 @@ void tst_QFileSystemWatcher::signalsEmittedAfterFileMoved()
     QCOMPARE(changedSpy.count(), 0);
 
     // move files to second directory
-    foreach (const QFileInfo &finfo, files)
+    for (const QFileInfo &finfo : files)
         QVERIFY(testDir.rename(finfo.fileName(), QString("movehere/%2").arg(finfo.fileName())));
 
     QCoreApplication::processEvents();

tests/auto/corelib/io/qtemporarydir/tst_qtemporarydir.cpp

@@ -391,7 +391,8 @@ void tst_QTemporaryDir::openOnRootDrives()
 #endif
     // If it's possible to create a file in the root directory, it
     // must be possible to create a temp dir there too.
-    foreach (const QFileInfo &driveInfo, QDir::drives()) {
+    const auto drives = QDir::drives();
+    for (const QFileInfo &driveInfo : drives) {
         QFile testFile(driveInfo.filePath() + "XXXXXX");
         if (testFile.open(QIODevice::ReadWrite)) {
             testFile.remove();

tests/auto/corelib/io/qtemporaryfile/tst_qtemporaryfile.cpp

@@ -524,7 +524,8 @@ void tst_QTemporaryFile::openOnRootDrives()
 #endif
     // If it's possible to create a file in the root directory, it
     // must be possible to create a temp file there too.
-    foreach (QFileInfo driveInfo, QDir::drives()) {
+    const auto drives = QDir::drives();
+    for (const QFileInfo &driveInfo : drives) {
         QFile testFile(driveInfo.filePath() + "XXXXXX.txt");
         if (testFile.open(QIODevice::ReadWrite)) {
             testFile.remove();

tests/auto/corelib/kernel/qmimedata/tst_qmimedata.cpp

@@ -1,8 +1,6 @@
 // Copyright (C) 2016 The Qt Company Ltd.
 // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
 
-#undef QT_NO_FOREACH // this file contains unported legacy Q_FOREACH uses
-
 #include <QTest>
 
 #include <QMimeData>
@@ -312,7 +310,8 @@ void tst_QMimeData::setUrls() const
     QCOMPARE(mimeData.text(), QString("http://qt-project.org\nhttp://www.google.com\n"));
 
     // test and verify that setData doesn't corrupt url content
-    foreach (const QString &format, mimeData.formats()) {
+    const auto allFormats = mimeData.formats();
+    for (const QString &format : allFormats) {
          QVariant before = mimeData.retrieveData(format, QMetaType(QMetaType::QByteArray));
          mimeData.setData(format, mimeData.data(format));
          QVariant after = mimeData.retrieveData(format, QMetaType(QMetaType::QByteArray));

tests/auto/corelib/kernel/qvariant/tst_qvariant.cpp

@@ -3,8 +3,6 @@
 // Copyright (C) 2016 Intel Corporation.
 // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
 
-#undef QT_NO_FOREACH // this file contains unported legacy Q_FOREACH uses
-
 #include <qvariant.h>
 
 // don't assume <type_traits>
@@ -4375,7 +4373,8 @@ void tst_QVariant::dataStream_data(QDataStream::Version version)
     path = path.prepend(":/stream/").append("/");
     QDir dir(path);
     uint i = 0;
-    foreach (const QFileInfo &fileInfo, dir.entryInfoList(QStringList() << "*.bin")) {
+    const auto entries = dir.entryInfoList(QStringList{u"*.bin"_s});
+    for (const QFileInfo &fileInfo : entries) {
         QTest::newRow((path + fileInfo.fileName()).toLatin1()) << fileInfo.filePath();
         i += 1;
     }

tests/auto/gui/text/qcssparser/tst_qcssparser.cpp

@@ -1,8 +1,6 @@
 // Copyright (C) 2016 The Qt Company Ltd.
 // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
 
-#undef QT_NO_FOREACH // this file contains unported legacy Q_FOREACH uses
-
 #include <QTest>
 #include <QtXml/QtXml>
 #include <QtGui/QFontInfo>
@@ -72,7 +70,8 @@ void tst_QCssParser::scanner_data()
 #endif
     d.cd("testdata");
     d.cd("scanner");
-    foreach (QFileInfo test, d.entryInfoList(QDir::Dirs | QDir::NoDotAndDotDot)) {
+    const auto entries = d.entryInfoList(QDir::Dirs | QDir::NoDotAndDotDot);
+    for (const QFileInfo &test : entries) {
         QString dir = test.absoluteFilePath() + QDir::separator();
         QTest::newRow(qPrintable(test.baseName()))
             << dir + "input"