diff --git a/test/maps_test.cc b/test/maps_test.cc
--- a/test/maps_test.cc
+++ b/test/maps_test.cc
@@ -26,6 +26,7 @@
 #include <lemon/smart_graph.h>
 #include <lemon/adaptors.h>
 #include <lemon/dfs.h>
+#include <algorithm>
 
 #include "test_tools.h"
 
@@ -37,9 +38,22 @@
 struct B {};
 
 class C {
-  int x;
+  int _x;
 public:
-  C(int _x) : x(_x) {}
+  C(int x) : _x(x) {}
+  int get() const { return _x; }
+};
+inline bool operator<(C c1, C c2) { return c1.get() < c2.get(); }
+inline bool operator==(C c1, C c2) { return c1.get() == c2.get(); }
+
+C createC(int x) { return C(x); }
+
+template <typename T>
+class Less {
+  T _t;
+public:
+  Less(T t): _t(t) {}
+  bool operator()(const T& t) const { return t < _t; }
 };
 
 class F {
@@ -56,6 +70,14 @@
 
 int binc(int a, B) { return a+1; }
 
+template <typename T>
+class Sum {
+  T& _sum;
+public:
+  Sum(T& sum) : _sum(sum) {}
+  void operator()(const T& t) { _sum += t; }
+};
+
 typedef ReadMap<A, double> DoubleMap;
 typedef ReadWriteMap<A, double> DoubleWriteMap;
 typedef ReferenceMap<A, double, double&, const double&> DoubleRefMap;
@@ -64,12 +86,6 @@
 typedef ReadWriteMap<A, bool> BoolWriteMap;
 typedef ReferenceMap<A, bool, bool&, const bool&> BoolRefMap;
 
-template<typename Map1, typename Map2, typename ItemIt>
-void compareMap(const Map1& map1, const Map2& map2, ItemIt it) {
-  for (; it != INVALID; ++it)
-    check(map1[it] == map2[it], "The maps are not equal");
-}
-
 int main()
 {
   // Map concepts
@@ -494,9 +510,10 @@
       check(backwardMap(gr)[e] == gr.direct(e, false), "Wrong BackwardMap");
     }
     
-    compareMap(sourceMap(orienter(gr, constMap<Edge, bool>(true))),
-               targetMap(orienter(gr, constMap<Edge, bool>(false))),
-               EdgeIt(gr));
+    check(mapCompare(gr,
+          sourceMap(orienter(gr, constMap<Edge, bool>(true))),
+          targetMap(orienter(gr, constMap<Edge, bool>(false)))),
+          "Wrong SourceMap or TargetMap");
 
     typedef Orienter<Graph, const ConstMap<Edge, bool> > Digraph;
     Digraph dgr(gr, constMap<Edge, bool>(true));
@@ -800,5 +817,183 @@
     check(n == num, "Wrong number");
 
   }
+  
+  // Graph map utilities:
+  // mapMin(), mapMax(), mapMinValue(), mapMaxValue()
+  // mapFind(), mapFindIf(), mapCount(), mapCountIf()
+  // mapCopy(), mapCompare(), mapFill()
+  {
+    DIGRAPH_TYPEDEFS(SmartDigraph);
+
+    SmartDigraph g;
+    Node n1 = g.addNode();
+    Node n2 = g.addNode();
+    Node n3 = g.addNode();
+    
+    SmartDigraph::NodeMap<int> map1(g);
+    SmartDigraph::ArcMap<char> map2(g);
+    ConstMap<Node, A> cmap1 = A();
+    ConstMap<Arc, C> cmap2 = C(0);
+    
+    map1[n1] = 10;
+    map1[n2] = 5;
+    map1[n3] = 12;
+    
+    // mapMin(), mapMax(), mapMinValue(), mapMaxValue()
+    check(mapMin(g, map1) == n2, "Wrong mapMin()");
+    check(mapMax(g, map1) == n3, "Wrong mapMax()");
+    check(mapMin(g, map1, std::greater<int>()) == n3, "Wrong mapMin()");
+    check(mapMax(g, map1, std::greater<int>()) == n2, "Wrong mapMax()");
+    check(mapMinValue(g, map1) == 5, "Wrong mapMinValue()");
+    check(mapMaxValue(g, map1) == 12, "Wrong mapMaxValue()");
+
+    check(mapMin(g, map2) == INVALID, "Wrong mapMin()");
+    check(mapMax(g, map2) == INVALID, "Wrong mapMax()");
+
+    check(mapMin(g, cmap1) != INVALID, "Wrong mapMin()");
+    check(mapMax(g, cmap2) == INVALID, "Wrong mapMax()");
+
+    Arc a1 = g.addArc(n1, n2);
+    Arc a2 = g.addArc(n1, n3);
+    Arc a3 = g.addArc(n2, n3);
+    Arc a4 = g.addArc(n3, n1);
+    
+    map2[a1] = 'b';
+    map2[a2] = 'a';
+    map2[a3] = 'b';
+    map2[a4] = 'c';
+
+    // mapMin(), mapMax(), mapMinValue(), mapMaxValue()
+    check(mapMin(g, map2) == a2, "Wrong mapMin()");
+    check(mapMax(g, map2) == a4, "Wrong mapMax()");
+    check(mapMin(g, map2, std::greater<int>()) == a4, "Wrong mapMin()");
+    check(mapMax(g, map2, std::greater<int>()) == a2, "Wrong mapMax()");
+    check(mapMinValue(g, map2, std::greater<int>()) == 'c',
+          "Wrong mapMinValue()");
+    check(mapMaxValue(g, map2, std::greater<int>()) == 'a',
+          "Wrong mapMaxValue()");
+
+    check(mapMin(g, cmap1) != INVALID, "Wrong mapMin()");
+    check(mapMax(g, cmap2) != INVALID, "Wrong mapMax()");
+    check(mapMaxValue(g, cmap2) == C(0), "Wrong mapMaxValue()");
+
+    check(mapMin(g, composeMap(functorToMap(&createC), map2)) == a2,
+          "Wrong mapMin()");
+    check(mapMax(g, composeMap(functorToMap(&createC), map2)) == a4,
+          "Wrong mapMax()");
+    check(mapMinValue(g, composeMap(functorToMap(&createC), map2)) == C('a'),
+          "Wrong mapMinValue()");
+    check(mapMaxValue(g, composeMap(functorToMap(&createC), map2)) == C('c'),
+          "Wrong mapMaxValue()");
+
+    // mapFind(), mapFindIf()
+    check(mapFind(g, map1, 5) == n2, "Wrong mapFind()");
+    check(mapFind(g, map1, 6) == INVALID, "Wrong mapFind()");
+    check(mapFind(g, map2, 'a') == a2, "Wrong mapFind()");
+    check(mapFind(g, map2, 'e') == INVALID, "Wrong mapFind()");
+    check(mapFind(g, cmap2, C(0)) == ArcIt(g), "Wrong mapFind()");
+    check(mapFind(g, cmap2, C(1)) == INVALID, "Wrong mapFind()");
+
+    check(mapFindIf(g, map1, Less<int>(7)) == n2,
+          "Wrong mapFindIf()");
+    check(mapFindIf(g, map1, Less<int>(5)) == INVALID,
+          "Wrong mapFindIf()");
+    check(mapFindIf(g, map2, Less<char>('d')) == ArcIt(g),
+          "Wrong mapFindIf()");
+    check(mapFindIf(g, map2, Less<char>('a')) == INVALID,
+          "Wrong mapFindIf()");
+
+    // mapCount(), mapCountIf()
+    check(mapCount(g, map1, 5) == 1, "Wrong mapCount()");
+    check(mapCount(g, map1, 6) == 0, "Wrong mapCount()");
+    check(mapCount(g, map2, 'a') == 1, "Wrong mapCount()");
+    check(mapCount(g, map2, 'b') == 2, "Wrong mapCount()");
+    check(mapCount(g, map2, 'e') == 0, "Wrong mapCount()");
+    check(mapCount(g, cmap2, C(0)) == 4, "Wrong mapCount()");
+    check(mapCount(g, cmap2, C(1)) == 0, "Wrong mapCount()");
+
+    check(mapCountIf(g, map1, Less<int>(11)) == 2,
+          "Wrong mapCountIf()");
+    check(mapCountIf(g, map1, Less<int>(13)) == 3,
+          "Wrong mapCountIf()");
+    check(mapCountIf(g, map1, Less<int>(5)) == 0,
+          "Wrong mapCountIf()");
+    check(mapCountIf(g, map2, Less<char>('d')) == 4,
+          "Wrong mapCountIf()");
+    check(mapCountIf(g, map2, Less<char>('c')) == 3,
+          "Wrong mapCountIf()");
+    check(mapCountIf(g, map2, Less<char>('a')) == 0,
+          "Wrong mapCountIf()");
+     
+    // MapIt, ConstMapIt
+/*
+These tests can be used after applying bugfix #330
+    typedef SmartDigraph::NodeMap<int>::MapIt MapIt;
+    typedef SmartDigraph::NodeMap<int>::ConstMapIt ConstMapIt;
+    check(*std::min_element(MapIt(map1), MapIt(INVALID)) == 5,
+          "Wrong NodeMap<>::MapIt");
+    check(*std::max_element(ConstMapIt(map1), ConstMapIt(INVALID)) == 12,
+          "Wrong NodeMap<>::MapIt");
+    
+    int sum = 0;
+    std::for_each(MapIt(map1), MapIt(INVALID), Sum<int>(sum));
+    check(sum == 27, "Wrong NodeMap<>::MapIt");
+    std::for_each(ConstMapIt(map1), ConstMapIt(INVALID), Sum<int>(sum));
+    check(sum == 54, "Wrong NodeMap<>::ConstMapIt");
+*/
+
+    // mapCopy(), mapCompare(), mapFill()
+    check(mapCompare(g, map1, map1), "Wrong mapCompare()");
+    check(mapCompare(g, cmap2, cmap2), "Wrong mapCompare()");
+    check(mapCompare(g, map1, shiftMap(map1, 0)), "Wrong mapCompare()");
+    check(mapCompare(g, map2, scaleMap(map2, 1)), "Wrong mapCompare()");
+    check(!mapCompare(g, map1, shiftMap(map1, 1)), "Wrong mapCompare()");
+
+    SmartDigraph::NodeMap<int> map3(g, 0);
+    SmartDigraph::ArcMap<char> map4(g, 'a');
+    
+    check(!mapCompare(g, map1, map3), "Wrong mapCompare()");
+    check(!mapCompare(g, map2, map4), "Wrong mapCompare()");    
+    
+    mapCopy(g, map1, map3);
+    mapCopy(g, map2, map4);
+
+    check(mapCompare(g, map1, map3), "Wrong mapCompare() or mapCopy()");
+    check(mapCompare(g, map2, map4), "Wrong mapCompare() or mapCopy()");    
+    
+    Undirector<SmartDigraph> ug(g);
+    Undirector<SmartDigraph>::EdgeMap<char> umap1(ug, 'x');
+    Undirector<SmartDigraph>::ArcMap<double> umap2(ug, 3.14);
+    
+    check(!mapCompare(g, map2, umap1), "Wrong mapCompare() or mapCopy()");
+    check(!mapCompare(g, umap1, map2), "Wrong mapCompare() or mapCopy()");
+    check(!mapCompare(ug, map2, umap1), "Wrong mapCompare() or mapCopy()");
+    check(!mapCompare(ug, umap1, map2), "Wrong mapCompare() or mapCopy()");
+    
+    mapCopy(g, map2, umap1);
+
+    check(mapCompare(g, map2, umap1), "Wrong mapCompare() or mapCopy()");
+    check(mapCompare(g, umap1, map2), "Wrong mapCompare() or mapCopy()");
+    check(mapCompare(ug, map2, umap1), "Wrong mapCompare() or mapCopy()");
+    check(mapCompare(ug, umap1, map2), "Wrong mapCompare() or mapCopy()");
+    
+    mapCopy(g, map2, umap1);
+    mapCopy(g, umap1, map2);
+    mapCopy(ug, map2, umap1);
+    mapCopy(ug, umap1, map2);
+    
+    check(!mapCompare(ug, umap1, umap2), "Wrong mapCompare() or mapCopy()");
+    mapCopy(ug, umap1, umap2);
+    check(mapCompare(ug, umap1, umap2), "Wrong mapCompare() or mapCopy()");
+    
+    check(!mapCompare(g, map1, constMap<Node>(2)), "Wrong mapCompare()");
+    mapFill(g, map1, 2);
+    check(mapCompare(g, constMap<Node>(2), map1), "Wrong mapFill()");
+
+    check(!mapCompare(g, map2, constMap<Arc>('z')), "Wrong mapCompare()");
+    mapCopy(g, constMap<Arc>('z'), map2);
+    check(mapCompare(g, constMap<Arc>('z'), map2), "Wrong mapCopy()");
+  }
+  
   return 0;
 }