public void WhenCreateHmacSignatureWithAnyBytes_ThenReturnsSignature()
            {
                var result = Encoding.UTF8.GetBytes("abody").CreateHmacSignature("asecret");

                Assert.That(result, Does.Match("[sha1\\=]".Fmt(DataFormats.Base64Text().Expression)));
            }
            public void WhenCreateHmacSignatureWithEmptyBytes_ThenReturnsSignature()
            {
                var result = new byte[] {}.CreateHmacSignature("asecret");

                Assert.That(result, Does.Match("[sha1\\=]".Fmt(DataFormats.Base64Text().Expression)));
            }