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project-test.ss
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project-test.ss
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#lang scheme/base
(require (except-in srfi/1 any)
"project.ss"
"test-base.ss")
; Helpers ------------------------------
; integer -> (listof (listof (U #t #f)))
(define (binary-sequences len)
(if (= len 1)
(list (list #f) (list #t))
(let ([sub-sequences (binary-sequences (sub1 len))])
(append (map (cut cons #f <>) sub-sequences)
(map (cut cons #t <>) sub-sequences)))))
; Tests --------------------------------
(define/provide-test-suite project-tests
(test-case "project+fold calls proc the correct number of times"
(let ([num-calls
(lambda (data)
(let ([counter 0])
(project+fold (lambda (data accum)
(set! counter (add1 counter))
(add1 accum))
0
data
(list #t #f #f))
counter))])
(check-equal? (num-calls null) 0)
(check-equal? (num-calls (list (list 1 2 3))) 1)
(check-equal? (num-calls (list (list 1 2 3)
(list 1 2 3))) 1)
(check-equal? (num-calls (list (list 1 2 3)
(list 2 2 3))) 2)
(check-equal? (num-calls (list (list 1 2 3)
(list 1 2 3)
(list 2 2 3))) 2)
(check-equal? (num-calls (list (list 1 2 3)
(list 2 2 3)
(list 2 2 3))) 2)
(check-equal? (num-calls (list (list 1 2 3)
(list 2 2 3)
(list 1 2 3))) 3)))
(test-case "project+fold accumulates data correctly"
(let ([cons+accum
(lambda (data)
(project+fold cons
null
data
(list #t #f #f)))])
(check-equal? (cons+accum null) null)
(check-equal? (cons+accum (list (list 1 2 3)))
(list (list 1 (list (list 2 3)))))
(check-equal? (cons+accum (list (list 1 2 3)
(list 1 2 3)))
(list (list 1 (list (list 2 3)
(list 2 3)))))
(check-equal? (cons+accum (list (list 1 2 3)
(list 4 5 6)))
(list (list 4 (list (list 5 6)))
(list 1 (list (list 2 3)))))
(check-equal? (cons+accum (list (list 1 2 3)
(list 1 4 5)
(list 2 6 7)))
(list (list 2 (list (list 6 7)))
(list 1 (list (list 2 3)
(list 4 5)))))
(check-equal? (cons+accum (list (list 1 2 3)
(list 4 5 6)
(list 4 7 8)))
(list (list 4 (list (list 5 6)
(list 7 8)))
(list 1 (list (list 2 3)))))
(check-equal? (cons+accum (list (list 1 2 3)
(list 2 4 5)
(list 1 6 7)))
(list (list 1 (list (list 6 7)))
(list 2 (list (list 4 5)))
(list 1 (list (list 2 3)))))))
(test-case "project accumulates data correctly"
(let ([cons+accum
(lambda (data)
(project data (list #t #f #f)))])
(check-equal? (cons+accum null) null)
(check-equal? (cons+accum (list (list 1 2 3)))
(list (list 1 (list (list 2 3)))))
(check-equal? (cons+accum (list (list 1 2 3)
(list 1 2 3)))
(list (list 1 (list (list 2 3)
(list 2 3)))))
(check-equal? (cons+accum (list (list 1 2 3)
(list 4 5 6)))
(list (list 1 (list (list 2 3)))
(list 4 (list (list 5 6)))))
(check-equal? (cons+accum (list (list 1 2 3)
(list 1 4 5)
(list 2 6 7)))
(list (list 1 (list (list 2 3)
(list 4 5)))
(list 2 (list (list 6 7)))))
(check-equal? (cons+accum (list (list 1 2 3)
(list 4 5 6)
(list 4 7 8)))
(list (list 1 (list (list 2 3)))
(list 4 (list (list 5 6)
(list 7 8)))))
(check-equal? (cons+accum (list (list 1 2 3)
(list 2 4 5)
(list 1 6 7)))
(list (list 1 (list (list 2 3)))
(list 2 (list (list 4 5)))
(list 1 (list (list 6 7)))))))
(test-case "project+map works as expected"
(let ([do-map
(lambda (data)
(project+map (lambda (key rest)
; Return (cons key (sum-of-all nonkey))
(cons key (fold + 0 (map (cut fold + 0 <>) rest))))
data
(list #t #f #f)))])
(check-equal? (do-map null) null)
(check-equal? (do-map (list (list 1 2 3)))
(list (cons 1 (+ 2 3))))
(check-equal? (do-map (list (list 1 2 3)
(list 1 2 3)))
(list (cons 1 (+ 2 3 2 3))))
(check-equal? (do-map (list (list 1 2 3)
(list 4 5 6)))
(list (cons 1 (+ 2 3))
(cons 4 (+ 5 6))))
(check-equal? (do-map (list (list 1 2 3)
(list 1 4 5)
(list 2 6 7)))
(list (cons 1 (+ 2 3 4 5))
(cons 2 (+ 6 7))))
(check-equal? (do-map (list (list 1 2 3)
(list 4 5 6)
(list 4 7 8)))
(list (cons 1 (+ 2 3))
(cons 4 (+ 5 6 7 8))))
(check-equal? (do-map (list (list 1 2 3)
(list 2 4 5)
(list 1 6 7)))
(list (cons 1 (+ 2 3))
(cons 2 (+ 4 5))
(cons 1 (+ 6 7))))))
(test-case "project+for-each works as expected"
(let* ([counter 0]
[do-map
(lambda (data)
(set! counter 0)
(project+map (lambda (key rest)
; Return (cons key (sum-of-all nonkey))
(set! counter (+ counter key (fold + 0 (map (cut fold + 0 <>) rest)))))
data
(list #t #f #f))
counter)])
(check-equal? (do-map null) 0)
(check-equal? (do-map (list (list 1 2 3)))
(+ 1
2 3))
(check-equal? (do-map (list (list 1 2 3)
(list 1 2 3)))
(+ 1
2 3
2 3))
(check-equal? (do-map (list (list 1 2 3)
(list 4 5 6)))
(+ 1
2 3
4
5 6))
(check-equal? (do-map (list (list 1 2 3)
(list 1 4 5)
(list 2 6 7)))
(+ 1
2 3
4 5
2
6 7))
(check-equal? (do-map (list (list 1 2 3)
(list 4 5 6)
(list 4 7 8)))
(+ 1
2 3
4
5 6
7 8))
(check-equal? (do-map (list (list 1 2 3)
(list 2 4 5)
(list 1 6 7)))
(+ 1
2 3
2
4 5
1
6 7)))))