Metal-In Test-Driven Development: A Dual-Target TDD approach

on YouTube ↗01h 00m

" summary

Metal-In TDD shows a Dual-Target workflow that builds a portable BatteryMonitor in C for an 8-bit MCU by driving behavior with unit tests, test doubles and gradual refactoring. Uses Ceedling and CMock with GCC and a Microchip simulator to run tests on target (27s) and host (≈10s), triangulates thresholds (0, 25, 49, 50%), extracts a PAL to hide GPIO bits, and verifies the module runs green on both simulator and real target.

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" chapters (14)

1. 0:00Introduction
2. 6:25Motivation for Metal-In TDD
3. 13:32Four-level battery monitor demo
4. 17:46Development environment setup
5. 22:00First test and hardware discovery
6. 25:37First test pass and validation
7. 27:24Refactoring code structure
8. 33:05Test doubles for dependencies
9. 38:01Battery percentage logic
10. 41:38Host environment tests
11. 45:29Behavior expansion with triangulation
12. 49:49Decoupling hardware specifics
13. 57:45Final refactoring and inversion
14. 59:33Conclusion

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