Wrong order of operations in utils/rotation unit test

[heysokam]

zmath/src/root.zig

Line 4628 in 3a5955b

const mat = mul(mul(rotate_origin, scaling(3, 4, 5)), translation(6, 7, 8));

I'm trying to unconfuse myself on exactly which order I should apply matrices to a vector using zmath functions.
While searching for an answer, I stumbled upon this line of code.

If convention is that, in order to achieve correct transformations, objects should be transformed in this order:

First: Scale -> then Rotate -> Last: Translate

then why is this line seemingly using a different order of operations?

I know the difference might be irrelevant for the test, or the test might be checking for different numbers where this order does not even make a difference.

But if tests are the only source of documentation/truth for this library...
shouldn't they operate in the expected order, such as to not confuse potential adopters of the code?