public void op_Move_string_string()
{
var obj = new KeyStringDictionary
{
new KeyStringPair("A", "1"),
new KeyStringPair("B", string.Empty),
new KeyStringPair("C", "3")
};
obj.Move("C", "B");
const string expected = "1,3,";
var actual = obj.Strings().Concat(',');
Assert.Equal(expected, actual);
}