diff --git a/src/fapplication.cpp b/src/fapplication.cpp
index 625cb9b9..0a55cd54 100644
--- a/src/fapplication.cpp
+++ b/src/fapplication.cpp
@@ -1517,21 +1517,21 @@ int FApplication::processTimerEvent()
 
   while ( iter != last )
   {
-    if ( ! (*iter).id
-      || ! (*iter).object
-      || currentTime < (*iter).timeout )  // no timer expired
+    if ( ! iter->id
+      || ! iter->object
+      || currentTime < iter->timeout )  // no timer expired
       break;
 
-    (*iter).timeout += (*iter).interval;
+    iter->timeout += iter->interval;
 
-    if ( (*iter).timeout < currentTime )
-      (*iter).timeout = currentTime + (*iter).interval;
+    if ( iter->timeout < currentTime )
+      iter->timeout = currentTime + iter->interval;
 
-    if ( (*iter).interval.tv_usec > 0 || (*iter).interval.tv_sec > 0 )
+    if ( iter->interval.tv_usec > 0 || iter->interval.tv_sec > 0 )
       activated++;
 
-    FTimerEvent t_ev(fc::Timer_Event, (*iter).id);
-    sendEvent((*iter).object, &t_ev);
+    FTimerEvent t_ev(fc::Timer_Event, iter->id);
+    sendEvent(iter->object, &t_ev);
 
     ++iter;
   }
diff --git a/src/ffiledialog.cpp b/src/ffiledialog.cpp
index a20ebc24..d97a7d6c 100644
--- a/src/ffiledialog.cpp
+++ b/src/ffiledialog.cpp
@@ -533,7 +533,7 @@ void FFileDialog::clear()
 
   while ( iter != last )
   {
-    std::free ((*iter).name);
+    std::free (iter->name);
     ++iter;
   }
 
@@ -553,7 +553,7 @@ int FFileDialog::numOfDirs()
 
   while ( iter != last )
   {
-    if ( (*iter).directory && std::strcmp((*iter).name, ".") != 0 )
+    if ( iter->directory && std::strcmp(iter->name, ".") != 0 )
       n++;
 
     ++iter;
@@ -730,10 +730,10 @@ void FFileDialog::dirEntriesToList()
 
   while ( iter != last )
   {
-    if ( (*iter).directory )
-      filebrowser->insert(FString((*iter).name), fc::SquareBrackets);
+    if ( iter->directory )
+      filebrowser->insert(FString(iter->name), fc::SquareBrackets);
     else
-      filebrowser->insert(FString((*iter).name));
+      filebrowser->insert(FString(iter->name));
 
     ++iter;
   }
@@ -780,7 +780,7 @@ int FFileDialog::changeDir (const FString& dirname)
 
           while ( iter != last )
           {
-            if ( std::strcmp((*iter).name, baseName) == 0 )
+            if ( std::strcmp(iter->name, baseName) == 0 )
             {
               filebrowser->setCurrentItem(i);
               filename->setText(FString(baseName) + '/');
@@ -871,9 +871,9 @@ void FFileDialog::cb_processActivate (FWidget*, data_ptr)
 
       while ( iter != last )
       {
-        if ( (*iter).name && input && ! input.isNull()
-          && std::strcmp((*iter).name, input) == 0
-          && (*iter).directory )
+        if ( iter->name && input && ! input.isNull()
+          && std::strcmp(iter->name, input) == 0
+          && iter->directory )
         {
           found = true;
           changeDir(input);
diff --git a/src/flistview.cpp b/src/flistview.cpp
index e4c6a109..7a8bc596 100644
--- a/src/flistview.cpp
+++ b/src/flistview.cpp
@@ -594,8 +594,8 @@ FObject::FObjectIterator FListView::insert ( FListViewItem* item
 
   while ( header_iter != header.end() )
   {
-    int width = (*header_iter).width;
-    bool fixed_width = (*header_iter).fixed_width;
+    int width = header_iter->width;
+    bool fixed_width = header_iter->fixed_width;
 
     if ( ! fixed_width )
     {
@@ -607,10 +607,10 @@ FObject::FObjectIterator FListView::insert ( FListViewItem* item
         len = 0;
 
       if ( len > width )
-        (*header_iter).width = len;
+        header_iter->width = len;
     }
 
-    line_width += (*header_iter).width + padding_space;  // width + trailing space
+    line_width += header_iter->width + padding_space;  // width + trailing space
     column_idx++;
     ++header_iter;
   }
@@ -1285,7 +1285,7 @@ void FListView::drawColumnLabels()
 
   while ( iter != header.end() )
   {
-    const FString& text = (*iter).name;
+    const FString& text = iter->name;
 
     if ( text.isNull() || text.isEmpty() )
     {
@@ -1511,8 +1511,8 @@ void FListView::drawColumnText (headerItems::const_iterator& iter)
   // Print lable text
   static const int leading_space = 1;
   static const int trailing_space = 1;
-  const FString& text = (*iter).name;
-  int width = (*iter).width;
+  const FString& text = iter->name;
+  int width = iter->width;
   FString txt = " " + text;
   uInt txt_length = txt.getLength();
   int column_width = leading_space + width;
@@ -1547,7 +1547,7 @@ void FListView::drawColumnEllipsis ( headerItems::const_iterator& iter
 {
   // Print lable ellipsis
   static const int ellipsis_length = 2;
-  int width = (*iter).width;
+  int width = iter->width;
 
   headerline << ' ';
   headerline << text.left(uInt(width - ellipsis_length));
diff --git a/src/fobject.cpp b/src/fobject.cpp
index 89daf0b8..2d520fdf 100644
--- a/src/fobject.cpp
+++ b/src/fobject.cpp
@@ -87,7 +87,7 @@ FObject::~FObject()  // destructor
 
     while ( iter != last )
     {
-      delete (*iter);
+      delete *iter;
       ++iter;
     }
   }
@@ -146,6 +146,8 @@ void FObject::removeParent()
 //----------------------------------------------------------------------
 void FObject::addChild (FObject* obj)
 {
+  // Adds an object obj to the children list
+
   if ( ! obj )
     return;
 
@@ -160,6 +162,8 @@ void FObject::addChild (FObject* obj)
 //----------------------------------------------------------------------
 void FObject::delChild (FObject* obj)
 {
+  // Deletes the child object obj from children list
+
   if ( ! obj )
     return;
 
@@ -174,6 +178,8 @@ void FObject::delChild (FObject* obj)
 //----------------------------------------------------------------------
 void FObject::getCurrentTime (timeval* time)
 {
+  // Get the current time as timeval struct
+
   gettimeofday(time, 0);
 
   // NTP fix
@@ -201,6 +207,8 @@ void FObject::getCurrentTime (timeval* time)
 //----------------------------------------------------------------------
 bool FObject::isTimeout (timeval* time, register long timeout)
 {
+  // Checks whether the specified time span (timeout in µs) has elapse
+
   register long diff_usec;
   struct timeval now;
   struct timeval diff;
@@ -222,6 +230,9 @@ bool FObject::isTimeout (timeval* time, register long timeout)
 //----------------------------------------------------------------------
 int FObject::addTimer (int interval)
 {
+  // Create a timer and returns the timer identifier number
+  // (interval in ms)
+
   FObject::TimerList::iterator iter, last;
   timeval time_interval;
   timeval currentTime;
@@ -250,7 +261,7 @@ int FObject::addTimer (int interval)
 
     while ( iter != last )
     {
-      if ( (*iter).id == id )
+      if ( iter->id == id )
       {
         iter = timer_list->begin();
         id++;
@@ -274,7 +285,7 @@ int FObject::addTimer (int interval)
   iter = timer_list->begin();
   last = timer_list->end();
 
-  while ( iter != last && (*iter).timeout < t.timeout )
+  while ( iter != last && iter->timeout < t.timeout )
     ++iter;
 
   timer_list->insert (iter, t);
@@ -286,16 +297,18 @@ int FObject::addTimer (int interval)
 //----------------------------------------------------------------------
 bool FObject::delTimer (int id)
 {
+  // Deletes a timer by using the timer identifier number
+
   FObject::TimerList::iterator iter, last;
 
-  if ( id <= 0 || id > int(timer_list->size()) )
+  if ( id <= 0 )
     return false;
 
   timer_modify_lock = true;
   iter = timer_list->begin();
   last = timer_list->end();
 
-  while ( iter != last && (*iter).id != id )
+  while ( iter != last && iter->id != id )
     ++iter;
 
   if ( iter != last )
@@ -312,6 +325,8 @@ bool FObject::delTimer (int id)
 //----------------------------------------------------------------------
 bool FObject::delOwnTimer()
 {
+  // Deletes all timers of this object
+
   FObject::TimerList::iterator iter;
 
   if ( ! timer_list )
@@ -325,7 +340,7 @@ bool FObject::delOwnTimer()
 
   while ( iter != timer_list->end() )
   {
-    if ( (*iter).object == this )
+    if ( iter->object == this )
       iter = timer_list->erase(iter);
     else
       ++iter;
@@ -338,6 +353,8 @@ bool FObject::delOwnTimer()
 //----------------------------------------------------------------------
 bool FObject::delAllTimer()
 {
+  // Deletes all timers of all objects
+
   if ( ! timer_list )
     return false;
 
@@ -355,6 +372,8 @@ bool FObject::delAllTimer()
 //----------------------------------------------------------------------
 bool FObject::event (FEvent* ev)
 {
+  // Receives events on this object
+
   if ( ev->type() == fc::Timer_Event )
   {
     onTimer ( const_cast<FTimerEvent*>(static_cast<const FTimerEvent*>(ev)) );
diff --git a/src/fterm.cpp b/src/fterm.cpp
index 2bf89a09..f03702a8 100644
--- a/src/fterm.cpp
+++ b/src/fterm.cpp
@@ -3402,7 +3402,7 @@ void FTerm::init_termcaps()
   while ( iter != terminals.end() )
   {
     // Copy c-string + terminating null-character ('\0')
-    std::strncpy (termtype, (*iter).c_str(), (*iter).length() + 1);
+    std::strncpy (termtype, iter->c_str(), iter->length() + 1);
 
     // Open the termcap file + load entry for termtype
     status = tgetent(term_buffer, termtype);
diff --git a/src/fvterm.cpp b/src/fvterm.cpp
index b9d13096..815bb0ce 100644
--- a/src/fvterm.cpp
+++ b/src/fvterm.cpp
@@ -521,7 +521,7 @@ int FVTerm::print (term_area* area, const std::vector<char_data>& term_string)
   {
     bool printable_character = false;
 
-    switch ( (*iter).code )
+    switch ( iter->code )
     {
       case '\n':
         area->cursor_y++;
diff --git a/src/test/fobject-test.cpp b/src/test/fobject-test.cpp
index 12a6a611..d409c06b 100644
--- a/src/test/fobject-test.cpp
+++ b/src/test/fobject-test.cpp
@@ -45,6 +45,11 @@ class FObject_protected : public FObject
     {
       return FObject::event(ev);
     }
+
+    FObject::TimerList* getTimerList() const
+    {
+      return timer_list;
+    }
 };
 #pragma pack(pop)
 
@@ -69,6 +74,9 @@ class FObjectTest : public CPPUNIT_NS::TestFixture
     void removeParentTest();
     void addTest();
     void delTest();
+    void iteratorTest();
+    void timeTest();
+    void timerTest();
 
   private:
     // Adds code needed to register the test suite
@@ -81,6 +89,9 @@ class FObjectTest : public CPPUNIT_NS::TestFixture
     CPPUNIT_TEST (removeParentTest);
     CPPUNIT_TEST (addTest);
     CPPUNIT_TEST (delTest);
+    CPPUNIT_TEST (iteratorTest);
+    CPPUNIT_TEST (timeTest);
+    CPPUNIT_TEST (timerTest);
 
     // End of test suite definition
     CPPUNIT_TEST_SUITE_END();
@@ -120,6 +131,13 @@ void FObjectTest::NoArgumentTest()
   FEvent* ev = new FEvent(fc::None_Event);
   CPPUNIT_ASSERT ( ! t.event(ev) );
   delete ev;
+
+  ev = new FEvent(fc::Timer_Event);
+  CPPUNIT_ASSERT ( t.event(ev) );
+  delete ev;
+
+  CPPUNIT_ASSERT ( ! fc::emptyFString::get().isNull() );
+  CPPUNIT_ASSERT ( fc::emptyFString::get().isEmpty() );
 }
 
 //----------------------------------------------------------------------
@@ -259,7 +277,103 @@ void FObjectTest::delTest()
   delete obj;
 }
 
+//----------------------------------------------------------------------
+void FObjectTest::iteratorTest()
+{/*
+  *  obj -> child1
+  *      -> child2
+  *      -> child3
+  */
+  FObject* obj =  new FObject();
+  FObject* child1 = new FObject(obj);
+  FObject* child2 = new FObject(obj);
+  FObject* child3 = new FObject(obj);
 
+  CPPUNIT_ASSERT ( child1->getParent() == obj );
+  CPPUNIT_ASSERT ( child2->getParent() == obj );
+  CPPUNIT_ASSERT ( child3->getParent() == obj );
+
+  FObject::constFObjectIterator c_iter, c_last;
+  c_iter = obj->begin();
+  c_last = obj->end();
+  int i = 0;
+
+  while ( c_iter != c_last )
+  {
+    i++;
+    ++c_iter;
+  }
+
+  CPPUNIT_ASSERT ( obj->numOfChildren() == i );
+  CPPUNIT_ASSERT ( i == 3 );
+
+  FObject::FObjectIterator iter, last;
+  iter = obj->begin();
+  last = obj->end();
+  i = 0;
+
+  while ( iter != last )
+  {
+    i++;
+    ++iter;
+  }
+
+  CPPUNIT_ASSERT ( obj->numOfChildren() == i );
+  CPPUNIT_ASSERT ( i == 3 );
+
+  delete obj;
+}
+
+//----------------------------------------------------------------------
+void FObjectTest::timeTest()
+{
+  struct timeval time1;
+  long timeout = 750000;  // 750 ms
+  FObject::getCurrentTime(&time1);
+  CPPUNIT_ASSERT ( ! FObject::isTimeout (&time1, timeout) );
+  sleep(1);
+  CPPUNIT_ASSERT ( FObject::isTimeout (&time1, timeout) );
+}
+
+//----------------------------------------------------------------------
+void FObjectTest::timerTest()
+{
+  FObject_protected t1;
+  FObject_protected t2;
+  int id1, id2;
+  CPPUNIT_ASSERT ( t1.getTimerList()->empty() );
+  id1 = t1.addTimer(300);
+  CPPUNIT_ASSERT ( ! t1.getTimerList()->empty() );
+  CPPUNIT_ASSERT ( t1.getTimerList()->size() == 1 );
+  id2 = t1.addTimer(900);
+  CPPUNIT_ASSERT ( t1.getTimerList()->size() == 2 );
+  t1.delTimer (id1);
+  CPPUNIT_ASSERT ( t1.getTimerList()->size() == 1 );
+  t1.delTimer (id2);
+  CPPUNIT_ASSERT ( t1.getTimerList()->empty() );
+  CPPUNIT_ASSERT ( t1.getTimerList()->size() == 0 );
+  t1.addTimer(250);
+  t1.addTimer(500);
+  t2.addTimer(750);
+  t2.addTimer(1000);
+  CPPUNIT_ASSERT_EQUAL ( t1.getTimerList(), t2.getTimerList() );
+  CPPUNIT_ASSERT ( t1.getTimerList()->size() == 4 );
+  CPPUNIT_ASSERT ( t2.getTimerList()->size() == 4 );
+
+  t1.delOwnTimer();
+  CPPUNIT_ASSERT ( t1.getTimerList()->size() == 2 );
+  CPPUNIT_ASSERT ( t2.getTimerList()->size() == 2 );
+
+  t1.addTimer(250);
+  CPPUNIT_ASSERT ( t1.getTimerList()->size() == 3 );
+  CPPUNIT_ASSERT ( t2.getTimerList()->size() == 3 );
+
+  t2.delAllTimer();
+  CPPUNIT_ASSERT ( t1.getTimerList()->empty() );
+  CPPUNIT_ASSERT ( t2.getTimerList()->empty() );
+  CPPUNIT_ASSERT ( t1.getTimerList()->size() == 0 );
+  CPPUNIT_ASSERT ( t2.getTimerList()->size() == 0 );
+}
 
 // Put the test suite in the registry
 CPPUNIT_TEST_SUITE_REGISTRATION (FObjectTest);