adding windows test driver fix

src/drivers/QtTestDriver.cpp

@@ -8,25 +8,32 @@ namespace cucumber {
 namespace internal {
 
 const InvokeResult QtTestStep::invokeStepBody() {
-    QTemporaryFile file;
-    if (!file.open()) {
-        return InvokeResult::failure("Unable to open temporary file needed for this test");
+    QString file_name;
+    {
+        QTemporaryFile file;
+        if (!file.open()) {
+            return InvokeResult::failure("Unable to open temporary file needed for this test");
+        }
+        file.close();
     }
-    file.close();
 
-    QtTestObject testObject(this);
+    file_name += ".txt";
+
+    QtTestObject testObject( this );
     int returnValue = QTest::qExec(
         &testObject,
         QStringList() << "test"
-                      << "-o" << file.fileName()
+                      << "-o" << file_name
     );
-    if (returnValue == 0) {
-        return InvokeResult::success();
-    } else {
-        file.open();
-        QTextStream ts(&file);
-        return InvokeResult::failure(ts.readAll().toLocal8Bit());
+    auto ok = ( returnValue == 0 ) ? true : false;
+    std::string error_text;
+    QFile file( file_name );
+    if(!ok) {
+      file.open( QIODevice::ReadOnly );
+      error_text = QString::fromLocal8Bit( file.readAll() ).toStdString();
     }
+    //file.remove();
+    return ok ?  InvokeResult::success() :  InvokeResult::failure( error_text );
 }
 
 }