D[1] and Zig[2] also have built-in unit testing. [1] https://dlang.org/spec/unittest.html https://dlang.org/spec/unittest.html [2] https://ziglearn.org/chapte

D[1] and Zig[2] also have built-in unit testing. [1] https://dlang.org/spec/unittest.html https://dlang.org/spec/unittest.html [2] https://ziglearn.org/chapter-1/ https://ziglearn.org/chapter-1/