45 lines
1.2 KiB
Factor
45 lines
1.2 KiB
Factor
! Copyright (C) 2009 Joe Groff.
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! See http://factorcode.org/license.txt for BSD license.
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USING: accessors pair-methods classes kernel sequences tools.test ;
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IN: pair-methods.tests
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TUPLE: thang ;
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TUPLE: foom < thang ;
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TUPLE: barm < foom ;
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TUPLE: zim < thang ;
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TUPLE: zang < zim ;
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: class-names ( a b prefix -- string )
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[ [ class-of name>> ] bi@ "-" glue ] dip prepend ;
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PAIR-GENERIC: blibble ( a b -- c )
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PAIR-M: thang thang blibble
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"vanilla " class-names ;
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PAIR-M: foom thang blibble
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"chocolate " class-names ;
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PAIR-M: barm thang blibble
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"strawberry " class-names ;
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PAIR-M: barm zim blibble
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"coconut " class-names ;
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{ "vanilla zang-zim" } [ zim new zang new blibble ] unit-test
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! args automatically swap to match most specific method
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{ "chocolate foom-zim" } [ foom new zim new blibble ] unit-test
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{ "chocolate foom-zim" } [ zim new foom new blibble ] unit-test
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{ "strawberry barm-barm" } [ barm new barm new blibble ] unit-test
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{ "strawberry barm-foom" } [ barm new foom new blibble ] unit-test
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{ "strawberry barm-foom" } [ foom new barm new blibble ] unit-test
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{ "coconut barm-zang" } [ zang new barm new blibble ] unit-test
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{ "coconut barm-zim" } [ barm new zim new blibble ] unit-test
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[ 1 2 blibble ] [ no-pair-method? ] must-fail-with
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