void TestConnectedRegions(Region region, int extension, int precision, IList <Tuple <double, double> > expected)
{
List <Region> regions = RegionHelper.GetConnectedRegions(region, extension, precision).ToList();
Assert.AreEqual(regions.Count, expected.Count);
for (int i = 0; i < regions.Count; ++i)
{
Assert.AreEqual(expected[i].Item1, regions[i].LatitudePrefix);
Assert.AreEqual(expected[i].Item2, regions[i].LongitudePrefix);
Assert.AreEqual(precision, regions[i].Precision);
}
}
