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# 05 · Watch: a callout built end to end
- URL: https://www.namastesalesforce.com/training/integration-patterns/watch-a-callout-built-end-to-end/
- Published: 2025-11-27T09:00:00.000Z
- Updated: 2025-11-27T09:00:00.000Z
- Description: Twenty minutes from a blank class to a tested, mocked, named-credential callout — narrated, mistakes left in.
- Author: Swarnil Singhai
- Tags: Integration Patterns, #training, #lesson-type-video, #duration-20m, #Import 2026-09-03 19:13

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.