public void PutAll()
        {
            var serdes = new StringSerDes();

            byte[] key  = serdes.Serialize("key", new SerializationContext()), value = serdes.Serialize("value", new SerializationContext());
            byte[] key1 = serdes.Serialize("key1", new SerializationContext()), value1 = serdes.Serialize("value1", new SerializationContext());
            byte[] key2 = serdes.Serialize("key2", new SerializationContext()), value2 = serdes.Serialize("value2", new SerializationContext());
            byte[] key3 = serdes.Serialize("key3", new SerializationContext()), value3 = serdes.Serialize("value3", new SerializationContext());

            var store = new InMemoryKeyValueStore("store");

            var items = new List <KeyValuePair <Bytes, byte[]> >();

            items.Add(KeyValuePair.Create(new Bytes(key), value));
            items.Add(KeyValuePair.Create(new Bytes(key1), value1));
            items.Add(KeyValuePair.Create(new Bytes(key2), value2));
            items.Add(KeyValuePair.Create(new Bytes(key3), value3));

            store.PutAll(items);

            Assert.AreEqual(4, store.ApproximateNumEntries());
        }