hoverfly VS httpmock

Use https://github.com/SpectoLabs/hoverfly

Hoverfly is an open-source tool for mocking and simulating APIs. It is relatively easy to use and has a wide range of features for mocking and simulating APIs, including support for importing and exporting mock configurations, generating random data for responses, and setting up conditional responses based on the contents of incoming requests.

Depending how robust their check in is, you could intercept and emulate the reply with something like hoverfly too.

What is your recommendation? Is there one widely used in the Golang community? I have come across hoverfly, but I wanted to have a few to perform a good benchmark exercise. Thanks

We will use httpmock for this purpose. Inside function setupSuite(), where we created useCase and provided nil as a billingClient now we will pass mocked http client:

Alternatively, you could use an http mock library like https://github.com/jarcoal/httpmock, and override the urls the RealClient calls with a mock response in your tests.

To mock an API: https://github.com/jarcoal/httpmock to use when your code calls external APIs so you don't want your tests call the real API. No need to create an interface as you do.