diff --git a/examples/testcdb.cc b/examples/testcdb.cc
new file mode 100644
index 0000000..64e9304
--- /dev/null
+++ b/examples/testcdb.cc
@@ -0,0 +1,52 @@
+#include <typeinfo>
+#include <assert.h>
+#include <memory>
+#include <iostream>
+#include <stdint.h>
+#include "../src/collocatordb.h"
+using namespace rocksdb;
+
+void dumpDb(Collocators& counters) {
+    auto it = std::unique_ptr<CollocatorIterator>(counters.SeekIterator(1000,0,0));
+    for (; it->isValid(); it->Next()) {
+      uint64_t value = it->intValue();
+      uint64_t key = it->intKey();
+      std::cout << "w1:" << W1(key) << ", w2:" << W2(key) << ", dist:" << (int32_t) DIST(key) << " - count:" << value << std::endl;
+    }
+    std::cout << "ready dumping\n";
+  }
+
+  void testCollocators(Collocators& counters) {
+    counters.inc(100,200,5);
+    counters.inc(1000,2000,-5);
+    counters.inc(1000,2000,5);
+    counters.inc(1000,2500,-3);
+    counters.inc(1000,2500,4);
+    counters.inc(1000,2900,3);
+
+    counters.inc(1001,2900,3);
+
+    for(int i=0; i<10000; i++)
+      counters.inc(rand()%1010,rand()%1010,rand()%10-5);
+
+    //  dumpDb(db);
+
+    counters.inc(100,200,5);
+    counters.inc(1000,2000,5);
+    counters.inc(1000,2500,4);
+    counters.inc(1000,2900,3);
+
+    counters.inc(1001,2900,3);
+
+    dumpDb(counters);
+    std::cout << "ready testing\n";
+  }
+
+  
+int main() {
+    Collocators counters = "/tmp/cdb";
+    std::cout << "testing now\n";
+    testCollocators(counters);
+    std::cout << "ready running\n";
+    return 0;
+}