public async Task Can_CalculateDistanceBetweenGeoMembers()
{
await redis.FlushDbAsync();
await redis.AddGeoMembersAsync("Sicily", new[] {
new RedisGeo(13.361389, 38.115556, "Palermo"),
new RedisGeo(15.087269, 37.502669, "Catania")
});
var distance = await redis.CalculateDistanceBetweenGeoMembersAsync("Sicily", "Palermo", "Catania");
Assert.That(distance, Is.EqualTo(166274.15156960039).Within(.1));
}