public async Task EnsuresArgumentsNotNull()
{
var connection = Substitute.For<IApiConnection>();
var client = new GistsClient(connection);
Assert.Throws<ArgumentNullException>(() => client.Delete(null));
}
public void PostsToTheCorrectUrl()
{
var connection = Substitute.For<IApiConnection>();
var client = new GistsClient(connection);
client.Delete("1");
connection.Received().Delete(Arg.Is<Uri>(u => u.ToString() == "gists/1"));
}