foldts-test-suite

[Shriram Krishnamurthi]

The documentation

https://docs.racket-lang.org/rackunit/internals.html?q=run-test-case#%28def._%28%28lib._rackunit%2Fmain..rkt%29._foldts-test-suite%29%29

says that `folds-test-suite` can be implemented in terms of `fold-test-results` as follows:

(define (fold-test-results suite-fn case-fn seed test)

(foldts-test-suite

(lambda (suite name before after seed)

(before)

(suite-fn name seed))

(lambda (suite name before after seed kid-seed)

(after)

kid-seed)

(lambda (case name action seed)

(case-fn

(run-test-case name action)

seed))

seed

test))

I'm curious why the value of `seed` in the second argument (the fup position) — highlighted — is ignored. I was guessing that, since this is a tree-fold, there are values "from across" and "from down", and we don't want to throw either one away. Wouldn't we want to take a combinator that combines the two?

Shriram

[Jack Firth]

The test case folding stuff in RackUnit should mostly be ignored, instead of extended.

[Alex Harsanyi]

Are there alternatives to the `folds-test-suite` and `fold-test-results` functions, for people who want to write their own test running and reporting for Rackunit tests?

Alex.

[Jack Firth]

Nope. A well-designed replacement for those APIs is sorely needed.