public void DecryptXmlThrowsWhenCryptoIsNull()
{
var xml = "<foo bar=\"MTIz\"><baz>NDU2</baz><baz>Nzg5</baz><qux>PGdhcnBseSBncmF1bHQ9ImFiYyIgLz4=</qux></foo>";
var keyIdentifier = new object();
ICrypto crypto = null;
Assert.That(() => crypto.DecryptXml(xml, new[] { "/foo/@bar", "/foo/baz", "/foo/qux" }, keyIdentifier), Throws.ArgumentNullException);
}
public static void DecryptXmlThrowsWhenCryptoIsNull()
{
var xml = "<foo bar=\"[[123]]\"><baz>[[456]]</baz><baz>[[789]]</baz><qux>[[<garply grault=\"abc\" />]]</qux></foo>";
ICrypto crypto = null !;
var act = () => crypto.DecryptXml(xml, new[] { "/foo/@bar", "/foo/baz", "/foo/qux" });
act.Should().ThrowExactly <ArgumentNullException>();
}
/// <summary>
/// Decrypts the fields, specified by XPath, that are contained in the given xml document string.
/// </summary>
/// <param name="crypto">
/// The instance of <see cref="ICrypto"/> that ultimately responsible for performing decryption operations
/// on field values.
/// </param>
/// <param name="xmlString">A string containing an xml document.</param>
/// <param name="xpathToDecrypt">The XPath of the field to decrypt.</param>
/// <param name="credentialName">
/// The name of the credential to use for this encryption operation,
/// or null to use the default credential.
/// </param>
/// <returns>The same xml document, except with the specified fields decrypted.</returns>
public static string DecryptXml(this ICrypto crypto, string xmlString, string xpathToDecrypt, string credentialName = null) =>
crypto.DecryptXml(xmlString, new[] { xpathToDecrypt }, credentialName);
