public void Setup()
{
_configurationMock = new Mock <IConfigurationWrapper>();
_configurationMock.Setup(mock => mock.GetConfigValue("TwilioAccountSid")).Returns("AC051651a7abfd7ec5209ad22273a24390");
_configurationMock.Setup(mock => mock.GetConfigValue("TwilioFromPhoneNumber")).Returns("+15005550006");
_configurationMock.Setup(mock => mock.GetEnvironmentVarAsString("TWILIO_AUTH_TOKEN")).Returns(Environment.GetEnvironmentVariable("TWILIO_TEST_AUTH_TOKEN"));
_fixture = new TwilioService(_configurationMock.Object);
_mockLogger = new Mock <ILog>();
_fixture.SetLogger(_mockLogger.Object);
}