2009-04-26 15:58:31 -04:00
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! (c)2009 Joe Groff 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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2011-10-24 22:33:09 -04:00
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[ [ class-of name>> ] bi@ "-" glue ] dip prepend ;
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2009-04-26 15:58:31 -04:00
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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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