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46 lines
1.7 KiB
Scheme
46 lines
1.7 KiB
Scheme
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(import (chibi weak) (chibi ast) (only (chibi test) test-begin test test-end))
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(test-begin "weak pointers")
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(test "preserved key and value" '("key1" "value1" #f)
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(let ((key (string-append "key" "1"))
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(value (string-append "value" "1")))
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(let ((eph (make-ephemeron key value)))
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(gc)
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(list key (ephemeron-value eph) (ephemeron-broken? eph)))))
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(test "unpreserved key and value" '(#f #f #t)
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(let ((eph (make-ephemeron (string-append "key" "2")
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(string-append "value" "2"))))
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(gc)
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(list (ephemeron-key eph) (ephemeron-value eph) (ephemeron-broken? eph))))
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(test "unpreserved key and preserved value" '(#f "value3" #t)
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(let ((value (string-append "value" "3")))
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(let ((eph (make-ephemeron (string-append "key" "3") value)))
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(gc)
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(list (ephemeron-key eph) value (ephemeron-broken? eph)))))
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(test "unpreserved value references unpreserved key" '(#f #f #t)
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(let ((key (string-append "key")))
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(let ((eph (make-ephemeron key (cons (string-append "value") key))))
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(gc)
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(list (ephemeron-key eph) (ephemeron-value eph) (ephemeron-broken? eph)))))
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;; disabled - we support weak keys, but not proper ephemerons
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'(test "preserved key and unpreserved value" '("key" "value" #f)
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(let ((key (string-append "key")))
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(let ((eph (make-ephemeron key (string-append "value"))))
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(gc)
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(list key (ephemeron-value eph) (ephemeron-broken? eph)))))
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'(test "preserved value references unpreserved key" '(#f #f #t)
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(let* ((key (string-append "key"))
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(value (cons (string-append "value") key)))
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(let ((eph (make-ephemeron key value)))
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(gc)
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(list (ephemeron-key eph) value (ephemeron-broken? eph)))))
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(test-end)
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