Using ASCII waveforms to test hardware designs

At Jane Street, an “expect test” is a test where you don’t manually write the output you’d like to check your code against – instead, this output is captured automatically and inserted by a tool into the testing code itself. If further runs produce different output, the test fails, and you’re presented with the diff. […]

At Jane Street, an “expect
test”
is a
test where you don’t manually write the output you’d like to check
your code against – instead, this output is captured automatically
and inserted by a tool into the testing code itself. If further runs
produce different output, the test fails, and you’re presented with
the diff.

Source: Jane Street