&gt;<i>Most sane projects create a build and test it, and don&#x27;t rely on testing source code because the build process itself can cause defects as well.</i><p>Most indie-dev projects don&#x27;t do testing, or TDD, or automated build tests at all. It&#x27;s a guy or 2-3 guys with their XCodes&#x2F;VSs.<p>At best, they might have a few tests.<p>It&#x27;s different from big companies like FB&#x2F;Google&#x2F;etc, or from software like Adobe&#x27;s, and much different than JS&#x2F;Java land.