Comment by skydhash
2 hours ago
That’s like saying to trace a spline, you only need to place a few points, carefully verify that the spline pass by those points and not verify the actual formula for the spline.
Or in other words: Test only guarantees their own result, not the code. The value of the test is because you know the code is trying to solve the general problem, not the test’s assertions.
That’s a horrible analogy. He specifically said he was designing and validating the tests based on his knowledge of what the goal of the project was.