amin.id — Writing https://amin.id/ A running record of Objective-C migrations, test infrastructure, and shipping without stopping — by Syaiful Amin. en Making legacy Objective-C testable without rewriting it https://amin.id/blog/making-legacy-objective-c-testable/ https://amin.id/blog/making-legacy-objective-c-testable/ Wed, 26 Aug 2026 00:00:00 GMT Method swizzling, seams, and why the first test is the expensive one.