public void test_that_factory_returns_empty_string_if_s3_response_is_empty()
{
//arrange
var testResponse = new GetObjectResponse(); //empty response
//act
var result = ImageRetrievalFactory.EncodeStreamToBase64(testResponse);
//assert
Assert.IsEmpty(result);
}
public void test_that_factory_can_decode_s3_response_to_base64()
{
//arrange
var testResponse = new GetObjectResponse();
testResponse.ResponseStream = new MemoryStream(faker.Random.Guid().ToByteArray());
//act
var result = ImageRetrievalFactory.EncodeStreamToBase64(testResponse);
var resultBase64 = result.Split(",")[1];
//assert
Assert.IsNotEmpty(result);
Assert.True(IsBase64String(resultBase64));
}
public void test_that_gateway_returns_base64_string_for_successful_request()
{
//arrange
var s3Response = new GetObjectResponse();
var data = faker.Random.Guid().ToByteArray();
s3Response.ResponseStream = new MemoryStream(data);
s3Response.HttpStatusCode = HttpStatusCode.OK;
mockS3Client.Setup(x => x.retrieveImage(It.IsAny <AWSCredentials>(), It.IsAny <string>(), It.IsAny <string>())).Returns(s3Response);
//second response, as if reusing first one, the stream of data will be closed
var s3Response2 = new GetObjectResponse();
s3Response2.ResponseStream = new MemoryStream(data);
var expectedResponse = ImageRetrievalFactory.EncodeStreamToBase64(s3Response2);
//act
var response = classUnderTest.RetrieveImage(It.IsAny <string>());
Assert.NotNull(response);
Assert.AreEqual(expectedResponse, response);
}
public string RetrieveImage(string imageKey)
{
try
{
var result = s3Client.retrieveImage(assumeRoleHelper.GetTemporaryCredentials(), imageKey,
Environment.GetEnvironmentVariable("bucket-name"));
return(ImageRetrievalFactory.EncodeStreamToBase64(result));
}
catch (AggregateException ex)
{
if (ex.InnerException != null && ex.InnerException.Message == "The specified key does not exist.")
{
throw new ImageNotFound(); //if image not found
}
throw ex;
}
catch (Exception ex)
{
throw ex;
}
}