Use ranged for loops in place of foreach in QTimeZone tests

This (and use of Q_SLOTS for the test slots) makes it possible to
enable QT_NO_KEYWORDS and QT_NO_FOREACH in all the corelib/time/
tests.

Change-Id: I85fd358f3d1a72c9269d5260d0224640c1751f2d
Reviewed-by: Marc Mutz <marc.mutz@kdab.com>

tests/auto/corelib/time/qdate/qdate.pro

@@ -2,3 +2,4 @@ CONFIG += testcase
 TARGET = tst_qdate
 QT = core-private testlib
 SOURCES = tst_qdate.cpp
+DEFINES += QT_NO_KEYWORDS QT_NO_FOREACH

tests/auto/corelib/time/qdate/tst_qdate.cpp

@@ -35,7 +35,7 @@
 class tst_QDate : public QObject
 {
     Q_OBJECT
-private slots:
+private Q_SLOTS:
     void isNull_data();
     void isNull();
     void isValid_data();

tests/auto/corelib/time/qdatetime/qdatetime.pro

@@ -2,6 +2,7 @@ CONFIG += testcase
 TARGET = tst_qdatetime
 QT = core-private testlib
 SOURCES = tst_qdatetime.cpp
+DEFINES += QT_NO_KEYWORDS QT_NO_FOREACH
 
 # For some reason using optimization here triggers a compiler issue, which causes an exception
 # However, the code is correct

tests/auto/corelib/time/qdatetime/tst_qdatetime.cpp

@@ -48,10 +48,10 @@ public:
 
     static QString str( int y, int month, int d, int h, int min, int s );
     static QDateTime dt( const QString& str );
-public slots:
+public Q_SLOTS:
     void initTestCase();
     void init();
-private slots:
+private Q_SLOTS:
     void ctor();
     void operator_eq();
     void isNull();

tests/auto/corelib/time/qtime/qtime.pro

@@ -2,3 +2,4 @@ CONFIG += testcase
 TARGET = tst_qtime
 QT = core testlib
 SOURCES = tst_qtime.cpp
+DEFINES += QT_NO_KEYWORDS QT_NO_FOREACH

tests/auto/corelib/time/qtime/tst_qtime.cpp

@@ -48,7 +48,7 @@ public:
     }
 #endif // remove for ### Qt 6
 
-private slots:
+private Q_SLOTS:
     void msecsTo_data();
     void msecsTo();
     void secsTo_data();

tests/auto/corelib/time/qtimezone/qtimezone.pro

@@ -2,10 +2,9 @@ CONFIG += testcase
 TARGET = tst_qtimezone
 QT = core-private testlib
 SOURCES = tst_qtimezone.cpp
-qtConfig(icu) {
-    QMAKE_USE_PRIVATE += icu
-}
+DEFINES += QT_NO_KEYWORDS QT_NO_FOREACH
 
+qtConfig(icu): QMAKE_USE_PRIVATE += icu
 darwin {
     OBJECTIVE_SOURCES += tst_qtimezone_darwin.mm
     LIBS += -framework Foundation

tests/auto/corelib/time/qtimezone/tst_qtimezone.cpp

@@ -1,6 +1,6 @@
 /****************************************************************************
 **
-** Copyright (C) 2019 The Qt Company Ltd.
+** Copyright (C) 2020 The Qt Company Ltd.
 ** Contact: https://www.qt.io/licensing/
 **
 ** This file is part of the test suite of the Qt Toolkit.
@@ -42,7 +42,7 @@ class tst_QTimeZone : public QObject
 public:
     tst_QTimeZone();
 
-private slots:
+private Q_SLOTS:
     // Public class default system tests
     void createTest();
     void nullTest();
@@ -385,8 +385,8 @@ void tst_QTimeZone::dataStreamTest()
 
 void tst_QTimeZone::isTimeZoneIdAvailable()
 {
-    QList<QByteArray> available = QTimeZone::availableTimeZoneIds();
-    foreach (const QByteArray &id, available) {
+    const QList<QByteArray> available = QTimeZone::availableTimeZoneIds();
+    for (const QByteArray &id : available) {
         QVERIFY(QTimeZone::isTimeZoneIdAvailable(id));
         QVERIFY(QTimeZone(id).isValid());
     }
@@ -701,8 +701,8 @@ void tst_QTimeZone::availableTimeZoneIds()
 
 void tst_QTimeZone::stressTest()
 {
-    QList<QByteArray> idList = QTimeZone::availableTimeZoneIds();
-    foreach (const QByteArray &id, idList) {
+    const QList<QByteArray> idList = QTimeZone::availableTimeZoneIds();
+    for (const QByteArray &id : idList) {
         QTimeZone testZone = QTimeZone(id);
         QCOMPARE(testZone.isValid(), true);
         QCOMPARE(testZone.id(), id);