public void CopyTo()
{
var copy = new KeyValuePair <string, string> [5];
_pList.CopyTo(copy, 0);
Assert.All(copy.Select(c => c.Key), s =>
Assert.Contains(s, new [] { "prop1", "prop2", "prop3", "prop4", "prop5" }));
Assert.All(copy.Select(c => c.Value), s =>
Assert.Contains(s, new[] { "value1", "value2", "value3", "value4", "value5" }));
}
