(tests): добавил для UniXML::iterator операции --it, ++it

include/UniXML.h

@@ -87,10 +87,12 @@ class UniXML_iterator:
         UniXML_iterator operator+(int);
         UniXML_iterator operator++(int);
         UniXML_iterator operator+=(int);
+        UniXML_iterator operator++();
 
         // Перейти к предыдущему узлу
         UniXML_iterator operator-(int);
         UniXML_iterator operator--(int);
+        UniXML_iterator operator--();
         UniXML_iterator operator-=(int);
 
         /*! Перейти на один уровень выше

src/Various/UniXML.cc

@@ -472,6 +472,11 @@ bool UniXML_iterator::find( const std::string& searchnode )
     return false;
 }
 // -------------------------------------------------------------------------
+UniXML_iterator UniXML_iterator::operator++()
+{
+	return (*this)+1;
+}
+// -------------------------------------------------------------------------
 UniXML_iterator UniXML_iterator::operator++(int)
 {
 	return (*this)+1;
@@ -504,6 +509,11 @@ UniXML_iterator UniXML_iterator::operator--(int)
 	return (*this)-1;
 }
 
+UniXML_iterator UniXML_iterator::operator--()
+{
+	return (*this)-1;
+}
+
 UniXML_iterator UniXML_iterator::operator-=(int s)
 {
 	return (*this)-s;

tests/unixml.cc

@@ -73,6 +73,12 @@ TEST_CASE("UniXML", "[UniXML]" )
 		it--;
 		CHECK( it.getName() == "UserData" );
 
+		++it;
+		CHECK( it.getName() == "UniSet" );
+
+		--it;
+		CHECK( it.getName() == "UserData" );
+
 		it = uxml.begin();
 		CHECK( it.findName("TestNode","TestNode1") != 0 );
 		it = uxml.begin();