public void EnvironmentalVariablesAWSCredentialsTest()
{
SetEnvironmentVariable("testKeyId", "testSecretAccessKey", "testSessionToken");
EnvironmentVariablesAWSCredentials EnvCredentials = new EnvironmentVariablesAWSCredentials();
Assert.AreEqual(EnvCredentials.GetCredentials(), new ImmutableCredentials("testKeyId", "testSecretAccessKey", "testSessionToken"));
}