Test non-default compare template argument in std::map

Examples/test-suite/csharp/li_std_map_runme.cs

@@ -240,6 +240,20 @@ public class li_std_map_runme {
                 throw new Exception("Key test (2) on complex key map failed");
         }
 
+        // Custom compare function
+        {
+          StringLengthNumberMap slmap = new StringLengthNumberMap();
+          li_std_map.populate(slmap);
+
+          string keys = string.Join(" ", new List<string>(slmap.Keys));
+          if (keys != "a aa zzz xxxx aaaaa")
+            throw new Exception("Keys are wrong or in wrong order: " + keys);
+
+          string values = string.Join(" ", new List<int>(slmap.Values));
+          if (values != "1 2 3 4 5")
+            throw new Exception("Values are wrong or in wrong order: " + values);
+        }
+
         // All done
     }
 }

Examples/test-suite/li_std_map.i

@@ -117,4 +117,25 @@ namespace std {
   }
 }
 
+%ignore LengthCompare::operator();
+%inline %{
+struct LengthCompare {
+  bool operator() (std::string s1, std::string s2) const {
+    return s1.size() < s2.size();
+  }
+};
+%}
 
+// A map sorted by string lengths
+%template(StringLengthNumberMap) std::map< std::string, int, LengthCompare >;
+
+%inline %{
+std::map< std::string, int, LengthCompare > MyMap;
+void populate(std::map< std::string, int, LengthCompare >&m) {
+  m["aa"] = 2;
+  m["xxxx"] = 4;
+  m["a"] = 1;
+  m["aaaaa"] = 5;
+  m["zzz"] = 3;
+}
+%}

Examples/test-suite/python/li_std_map_runme.py

@@ -67,3 +67,15 @@ if [i for i in mii.itervalues()] != [2]:
     raise RuntimeError("itervalues")
 if [i for i in mii.iteritems()] != [(1, 2)]:
     raise RuntimeError("iteritems")
+
+
+slmap = li_std_map.StringLengthNumberMap()
+li_std_map.populate(slmap)
+
+keys = " ".join([k for k in slmap.keys()])
+if keys != "a aa zzz xxxx aaaaa":
+    raise RuntimeError("Keys are wrong or in wrong order: " + keys)
+
+values = " ".join([str(v) for v in slmap.values()])
+if values != "1 2 3 4 5":
+    raise RuntimeError("Values are wrong or in wrong order: " + values)