Skip the constructByInfo() test if no serial ports are found on *nix

In unix-like systems it is possible to use socat to creation of the
virtual serial ports. But these devices are symlinks on the /dev/pts
devices, that is not a serial ports. Thus QSPI can not find it and will
construct a null object. In this case this is not an error and we need
just to skip test.

Change-Id: I59bbb3c4653555be39ea6fff903c386065c10d0a
Reviewed-by: Sergey Belyashov <Sergey.Belyashov@gmail.com>

1 files changed, 15 insertions, 1 deletions

diff --git a/tests/auto/qserialport/tst_qserialport.cpp b/tests/auto/qserialport/tst_qserialport.cpp
index f34b939..e064333 100644
--- a/tests/auto/qserialport/tst_qserialport.cpp
+++ b/tests/auto/qserialport/tst_qserialport.cpp
@@ -234,9 +234,23 @@ void tst_QSerialPort::constructByName()
 void tst_QSerialPort::constructByInfo()
 {
     QSerialPortInfo senderPortInfo(m_senderPortName);
+    QSerialPortInfo receiverPortInfo(m_receiverPortName);
+
+#if defined(Q_OS_UNIX)
+    if (senderPortInfo.isNull() || receiverPortInfo.isNull()) {
+        static const char message[] =
+                "Test doesn't work because the specified serial ports aren't"
+                " found in system and can't be constructed by QSerialPortInfo.\n";
+#if (QT_VERSION >= QT_VERSION_CHECK(5, 0, 0))
+        QSKIP(message);
+#else
+        QSKIP(message, SkipAll);
+#endif
+    }
+#endif
+
     QSerialPort serialPort(senderPortInfo);
     QCOMPARE(serialPort.portName(), m_senderPortName);
-    QSerialPortInfo receiverPortInfo(m_receiverPortName);
     serialPort.setPort(receiverPortInfo);
     QCOMPARE(serialPort.portName(), m_receiverPortName);
 }