Testing Against AWS APIs
summary
Code uses Go and the AWS SDK to call EC2 DescribeInstances; goal is deterministic tests without hitting live AWS. Refactor functions to accept the generated ec2 API interface (eg ec2iface.EC2API) instead of a session, implement a small mock client that returns crafted DescribeInstancesOutput populated with specific instance IDs, and run table-driven tests that assert exact results. The mock carries an instanceIDs field so tests control returned values; the approach compiles and reproduces expected outputs.
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chapters (13)
- 0:00Intro
- 0:25Writing code that interacts with AWS
- 0:38Testing code against live systems
- 1:37EC2 API
- 1:56AWS API Patterns
- 2:32API Documentation
- 2:51API Testing
- 3:15Special Sauce
- 3:38API Clients
- 4:28Test Code
- 4:46Mock Client
- 5:36Test
- 5:48Live Demo
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