Add bool QStandardPaths::isTestModeEnabled()

Library code might need to know this, e.g. when calling an external
process, to give it the right configuration. (For instance when
ksycoca code calls kbuildsycoca to recreate the DB at the right place).

Change-Id: I343ddefff816586f9d391973c08ff1e1ad86bf0e
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>

src/corelib/io/qstandardpaths.cpp

@@ -333,6 +333,15 @@ QString QStandardPaths::displayName(StandardLocation type)
   On Windows, everything goes to a "qttest" directory under Application Data.
 */
 
+
+/*!
+  \fn void QStandardPaths::isTestModeEnabled()
+
+  \internal
+
+  Returns true if test mode is enabled in QStandardPaths; otherwise returns false.
+*/
+
 QT_END_NAMESPACE
 
 #endif // QT_NO_STANDARDPATHS

src/corelib/io/qstandardpaths.h

@@ -92,6 +92,7 @@ public:
     static QString findExecutable(const QString &executableName, const QStringList &paths = QStringList());
 
     static void enableTestMode(bool testMode);
+    static bool isTestModeEnabled();
 
 private:
     // prevent construction

src/corelib/io/qstandardpaths_blackberry.cpp

@@ -55,6 +55,11 @@ void QStandardPaths::enableTestMode(bool testMode)
     qsp_testMode = testMode;
 }
 
+bool QStandardPaths::isTestModeEnabled()
+{
+    return qsp_testMode;
+}
+
 static QString testModeInsert() {
     if (qsp_testMode)
         return QStringLiteral("/.qttest");

src/corelib/io/qstandardpaths_json.cpp

@@ -116,6 +116,11 @@ void QStandardPaths::enableTestMode(bool testMode)
     qsp_testMode = testMode;
 }
 
+bool QStandardPaths::isTestModeEnabled()
+{
+        return qsp_testMode;
+}
+
 static void appendOrganizationAndApp(QString &path)
 {
     const QString org = QCoreApplication::organizationName();

src/corelib/io/qstandardpaths_mac.cpp

@@ -97,6 +97,11 @@ void QStandardPaths::enableTestMode(bool testMode)
     qsp_testMode = testMode;
 }
 
+bool QStandardPaths::isTestModeEnabled()
+{
+    return qsp_testMode;
+}
+
 /*
     Constructs a full unicode path from a FSRef.
 */

src/corelib/io/qstandardpaths_unix.cpp

@@ -70,6 +70,11 @@ void QStandardPaths::enableTestMode(bool testMode)
     qsp_testMode = testMode;
 }
 
+bool QStandardPaths::isTestModeEnabled()
+{
+    return qsp_testMode;
+}
+
 QString QStandardPaths::writableLocation(StandardLocation type)
 {
     switch (type) {

src/corelib/io/qstandardpaths_win.cpp

@@ -92,6 +92,11 @@ void QStandardPaths::enableTestMode(bool testMode)
     qsp_testMode = testMode;
 }
 
+bool QStandardPaths::isTestModeEnabled()
+{
+    return qsp_testMode;
+}
+
 QString QStandardPaths::writableLocation(StandardLocation type)
 {
     QString result;

tests/auto/corelib/io/qstandardpaths/tst_qstandardpaths.cpp

@@ -159,7 +159,9 @@ void tst_qstandardpaths::testCustomLocations()
 
 void tst_qstandardpaths::enableTestMode()
 {
+    QVERIFY(!QStandardPaths::isTestModeEnabled());
     QStandardPaths::enableTestMode(true);
+    QVERIFY(QStandardPaths::isTestModeEnabled());
 
 #ifdef Q_XDG_PLATFORM
     setCustomLocations(); // for the global config dir