05 · Watch: a callout built end to end
Video lesson
20m
Twenty minutes from a blank class to a tested, mocked, named-credential callout — narrated, mistakes left in.
Follow along
Pause after each step and run the same code in your own org. The named credential setup happens on screen too — nothing is pre-baked.
Mentioned in this video
HttpCalloutMock, Test.setMock, and the two-minute trick for inspecting the request your code actually sent.