factor/core/classes/tuple/tuple-tests.factor

USING: accessors arrays assocs calendar classes classes.algebra
classes.private classes.tuple classes.tuple.private columns
compiler.errors compiler.units continuations definitions
effects eval generic generic.single generic.standard grouping
io.streams.string kernel kernel.private math math.constants
math.order namespaces parser parser.notes prettyprint
quotations random see sequences sequences.private slots
slots.private splitting strings summary threads tools.test
vectors vocabs words words.symbol ;
IN: classes.tuple.tests

TUPLE: rect x y w h ;
: <rect> ( x y w h -- rect ) rect boa ;

: move ( x rect -- rect )
    [ + ] change-x ;

[ f ] [ 10 20 30 40 <rect> dup clone 5 swap move = ] unit-test

[ t ] [ 10 20 30 40 <rect> dup clone 0 swap move = ] unit-test

! Make sure we handle tuple class redefinition
TUPLE: redefinition-test ;

C: <redefinition-test> redefinition-test

<redefinition-test> "redefinition-test" set

[ t ] [ "redefinition-test" get redefinition-test? ] unit-test

"IN: classes.tuple.tests TUPLE: redefinition-test ;" eval( -- )

[ t ] [ "redefinition-test" get redefinition-test? ] unit-test

! Make sure we handle changing shapes!
TUPLE: point x y ;

[ ] [ 100 200 point boa "p" set ] unit-test

! Use eval to sequence parsing explicitly
[ ] [ "IN: classes.tuple.tests TUPLE: point x y z ;" eval( -- ) ] unit-test

[ 100 ] [ "p" get x>> ] unit-test
[ 200 ] [ "p" get y>> ] unit-test
[ f ] [ "p" get "z>>" "accessors" lookup execute ] unit-test

[ ] [ "p" get 300 ">>z" "accessors" lookup execute drop ] unit-test

[ 3 ] [ "p" get tuple-size ] unit-test

[ 300 ] [ "p" get "z>>" "accessors" lookup execute ] unit-test

[ ] [ "IN: classes.tuple.tests TUPLE: point z y ;" eval( -- ) ] unit-test

[ 2 ] [ "p" get tuple-size ] unit-test

[ "p" get x>> ] must-fail
[ 200 ] [ "p" get y>> ] unit-test
[ 300 ] [ "p" get "z>>" "accessors" lookup execute ] unit-test

TUPLE: predicate-test ;

C: <predicate-test> predicate-test

: predicate-test ( a -- ? ) drop f ;

[ t ] [ <predicate-test> predicate-test? ] unit-test

PREDICATE: silly-pred < tuple
    class \ rect = ;

GENERIC: area ( obj -- n )
M: silly-pred area dup w>> swap h>> * ;

TUPLE: circle radius ;
M: circle area radius>> sq pi * ;

[ 200 ] [ T{ rect f 0 0 10 20 } area ] unit-test

! Hashcode breakage
TUPLE: empty ;

C: <empty> empty

[ t ] [ <empty> hashcode fixnum? ] unit-test

! Compiler regression
[ t length ] [ object>> t eq? ] must-fail-with

[ "<constructor-test>" ]
[ "IN: classes.tuple.test TUPLE: constructor-test ; C: <constructor-test> constructor-test" eval( -- ) word name>> ] unit-test

TUPLE: size-test a b c d ;

[ t ] [
    T{ size-test } tuple-size
    size-test tuple-layout second =
] unit-test

GENERIC: <yo-momma> ( a -- b )

TUPLE: yo-momma ;

[ ] [ "IN: classes.tuple.tests C: <yo-momma> yo-momma" eval( -- ) ] unit-test

[ f ] [ \ <yo-momma> generic? ] unit-test

! Test forget
[
    [ t ] [ \ yo-momma class? ] unit-test
    [ ] [ \ yo-momma forget ] unit-test
    [ ] [ \ <yo-momma> forget ] unit-test
    [ f ] [ \ yo-momma update-map get values memq? ] unit-test
] with-compilation-unit

TUPLE: loc-recording ;

[ f ] [ \ loc-recording where not ] unit-test

! 'forget' wasn't robust enough

TUPLE: forget-robustness ;

GENERIC: forget-robustness-generic ( a -- b )

M: forget-robustness forget-robustness-generic ;

M: integer forget-robustness-generic ;

[
    [ ] [ \ forget-robustness-generic forget ] unit-test
    [ ] [ \ forget-robustness forget ] unit-test
    [ ] [ M\ forget-robustness forget-robustness-generic forget ] unit-test
] with-compilation-unit

! rapido found this one
GENERIC# m1 0 ( s n -- n )
GENERIC# m2 1 ( s n -- v )

TUPLE: t1 ;

M: t1 m1 drop ;
M: t1 m2 nip ;

TUPLE: t2 ;

M: t2 m1 drop ;
M: t2 m2 nip ;

TUPLE: t3 ;

M: t3 m1 drop ;
M: t3 m2 nip ;

TUPLE: t4 ;

M: t4 m1 drop ;
M: t4 m2 nip ;

C: <t4> t4

[ 1 ] [ 1 <t4> m1 ] unit-test
[ 1 ] [ <t4> 1 m2 ] unit-test

! another combination issue
GENERIC: silly ( obj -- obj obj )

UNION: my-union slice repetition column array vector reversed ;

M: my-union silly "x" ;

M: array silly "y" ;

M: column silly "fdsfds" ;

M: repetition silly "zzz" ;

M: reversed silly "zz" ;

M: slice silly "tt" ;

M: string silly "t" ;

M: vector silly "z" ;

[ "zz" ] [ 123 <reversed> silly nip ] unit-test

! Typo
SYMBOL: not-a-tuple-class

! Missing check
[ not-a-tuple-class boa ] must-fail
[ not-a-tuple-class new ] must-fail

TUPLE: erg's-reshape-problem a b c d ;

C: <erg's-reshape-problem> erg's-reshape-problem

! Inheritance
TUPLE: computer cpu ram ;
C: <computer> computer

[ "TUPLE: computer cpu ram ;" ] [
    [ \ computer see ] with-string-writer string-lines second
] unit-test

TUPLE: laptop < computer battery ;
C: <laptop> laptop

[ t ] [ laptop tuple-class? ] unit-test
[ t ] [ laptop tuple class<= ] unit-test
[ t ] [ laptop computer class<= ] unit-test
[ t ] [ laptop computer classes-intersect? ] unit-test

[ ] [ "Pentium" 128 3 hours <laptop> "laptop" set ] unit-test
[ t ] [ "laptop" get laptop? ] unit-test
[ t ] [ "laptop" get computer? ] unit-test
[ t ] [ "laptop" get tuple? ] unit-test

: test-laptop-slot-values ( -- )
    [ laptop ] [ "laptop" get class ] unit-test
    [ "Pentium" ] [ "laptop" get cpu>> ] unit-test
    [ 128 ] [ "laptop" get ram>> ] unit-test
    [ t ] [ "laptop" get battery>> 3 hours = ] unit-test ;

test-laptop-slot-values

[ "TUPLE: laptop < computer battery ;" ] [
    [ \ laptop see ] with-string-writer string-lines second
] unit-test

[ { tuple computer laptop } ] [ laptop superclasses ] unit-test

TUPLE: server < computer rackmount ;
C: <server> server

[ t ] [ server tuple-class? ] unit-test
[ t ] [ server tuple class<= ] unit-test
[ t ] [ server computer class<= ] unit-test
[ t ] [ server computer classes-intersect? ] unit-test

[ ] [ "PowerPC" 64 "1U" <server> "server" set ] unit-test
[ t ] [ "server" get server? ] unit-test
[ t ] [ "server" get computer? ] unit-test
[ t ] [ "server" get tuple? ] unit-test

: test-server-slot-values ( -- )
    [ server ] [ "server" get class ] unit-test
    [ "PowerPC" ] [ "server" get cpu>> ] unit-test
    [ 64 ] [ "server" get ram>> ] unit-test
    [ "1U" ] [ "server" get rackmount>> ] unit-test ;

test-server-slot-values

[ f ] [ "server" get laptop? ] unit-test
[ f ] [ "laptop" get server? ] unit-test

[ f ] [ server laptop class<= ] unit-test
[ f ] [ laptop server class<= ] unit-test
[ f ] [ laptop server classes-intersect? ] unit-test

[ f ] [ 1 2 <computer> laptop? ] unit-test
[ f ] [ \ + server? ] unit-test

[ "TUPLE: server < computer rackmount ;" ] [
    [ \ server see ] with-string-writer string-lines second
] unit-test

[
    "IN: classes.tuple.tests TUPLE: bad-superclass < word ;" eval( -- )
] must-fail

! Dynamically changing inheritance hierarchy
TUPLE: electronic-device ;

[ ] [ "IN: classes.tuple.tests TUPLE: computer < electronic-device cpu ram ; C: <computer> computer C: <laptop> laptop C: <server> server" eval( -- ) ] unit-test

[ f ] [ electronic-device laptop class<= ] unit-test
[ t ] [ server electronic-device class<= ] unit-test
[ t ] [ laptop server class-or electronic-device class<= ] unit-test

[ t ] [ "laptop" get electronic-device? ] unit-test
[ t ] [ "laptop" get computer? ] unit-test
[ t ] [ "laptop" get laptop? ] unit-test
[ f ] [ "laptop" get server? ] unit-test

[ t ] [ "server" get electronic-device? ] unit-test
[ t ] [ "server" get computer? ] unit-test
[ f ] [ "server" get laptop? ] unit-test
[ t ] [ "server" get server? ] unit-test

[ ] [ "IN: classes.tuple.tests TUPLE: computer cpu ram ; C: <computer> computer C: <laptop> laptop C: <server> server" eval( -- ) ] unit-test

[ f ] [ "laptop" get electronic-device? ] unit-test
[ t ] [ "laptop" get computer? ] unit-test

[ ] [ "IN: classes.tuple.tests TUPLE: computer < electronic-device cpu ram disk ; C: <computer> computer C: <laptop> laptop C: <server> server" eval( -- ) ] unit-test

test-laptop-slot-values
test-server-slot-values

[ ] [ "IN: classes.tuple.tests TUPLE: electronic-device voltage ; C: <computer> computer C: <laptop> laptop C: <server> server" eval( -- ) ] unit-test

test-laptop-slot-values
test-server-slot-values

TUPLE: make-me-some-accessors voltage grounded? ;

[ f ] [ "laptop" get voltage>> ] unit-test
[ f ] [ "server" get voltage>> ] unit-test

[ ] [ "laptop" get 220 >>voltage drop ] unit-test
[ ] [ "server" get 110 >>voltage drop ] unit-test

[ ] [ "IN: classes.tuple.tests TUPLE: electronic-device voltage grounded? ; C: <computer> computer" eval( -- ) ] unit-test

test-laptop-slot-values
test-server-slot-values

[ 220 ] [ "laptop" get voltage>> ] unit-test
[ 110 ] [ "server" get voltage>> ] unit-test

[ ] [ "IN: classes.tuple.tests TUPLE: electronic-device grounded? voltage ; C: <computer> computer C: <laptop> laptop C: <server> server" eval( -- ) ] unit-test

test-laptop-slot-values
test-server-slot-values

[ 220 ] [ "laptop" get voltage>> ] unit-test
[ 110 ] [ "server" get voltage>> ] unit-test

! Reshaping superclass and subclass simultaneously
[ ] [ "IN: classes.tuple.tests TUPLE: electronic-device voltage ; TUPLE: computer < electronic-device cpu ram ; C: <computer> computer C: <laptop> laptop C: <server> server" eval( -- ) ] unit-test

test-laptop-slot-values
test-server-slot-values

[ 220 ] [ "laptop" get voltage>> ] unit-test
[ 110 ] [ "server" get voltage>> ] unit-test

! Reshape crash
TUPLE: test1 a ; TUPLE: test2 < test1 b ;

"a" "b" test2 boa "test" set

: test-a/b ( -- )
    [ "a" ] [ "test" get a>> ] unit-test
    [ "b" ] [ "test" get b>> ] unit-test ;

test-a/b

[ ] [ "IN: classes.tuple.tests TUPLE: test1 a x ; TUPLE: test2 < test1 b y ;" eval( -- ) ] unit-test

test-a/b

[ ] [ "IN: classes.tuple.tests TUPLE: test1 a ; TUPLE: test2 < test1 b ;" eval( -- ) ] unit-test

test-a/b

! Twice in the same compilation unit
[
    test1 tuple { "a" "x" "y" } define-tuple-class
    test1 tuple { "a" "y" } define-tuple-class
] with-compilation-unit

test-a/b

! Moving slots up and down
TUPLE: move-up-1 a b ;
TUPLE: move-up-2 < move-up-1 c ;

T{ move-up-2 f "a" "b" "c" } "move-up" set

: test-move-up ( -- )
    [ "a" ] [ "move-up" get a>> ] unit-test
    [ "b" ] [ "move-up" get b>> ] unit-test
    [ "c" ] [ "move-up" get c>> ] unit-test ;

test-move-up

[ ] [ "IN: classes.tuple.tests TUPLE: move-up-1 a b c ; TUPLE: move-up-2 < move-up-1 ;" eval( -- ) ] unit-test

test-move-up

[ ] [ "IN: classes.tuple.tests TUPLE: move-up-1 a c ; TUPLE: move-up-2 < move-up-1 b ;" eval( -- ) ] unit-test

test-move-up

[ ] [ "IN: classes.tuple.tests TUPLE: move-up-1 c ; TUPLE: move-up-2 < move-up-1 b a ;" eval( -- ) ] unit-test

test-move-up

[ ] [ "IN: classes.tuple.tests TUPLE: move-up-1 ; TUPLE: move-up-2 < move-up-1 a b c ;" eval( -- ) ] unit-test

! Constructors must be recompiled when changing superclass
TUPLE: constructor-update-1 xxx ;

TUPLE: constructor-update-2 < constructor-update-1 yyy zzz ;

: <constructor-update-2> ( a b c -- tuple ) constructor-update-2 boa ;

{ 3 1 } [ <constructor-update-2> ] must-infer-as

[ ] [ "IN: classes.tuple.tests TUPLE: constructor-update-1 xxx ttt www ;" eval( -- ) ] unit-test

{ 3 1 } [ <constructor-update-2> ] must-infer-as

[ 1 2 3 4 5 <constructor-update-2> ] [ not-compiled? ] must-fail-with

[ ] [ [ \ <constructor-update-2> forget ] with-compilation-unit ] unit-test

! Redefinition problem
TUPLE: redefinition-problem ;

UNION: redefinition-problem' redefinition-problem integer ;

[ t ] [ 3 redefinition-problem'? ] unit-test

TUPLE: redefinition-problem-2 ;

"IN: classes.tuple.tests TUPLE: redefinition-problem < redefinition-problem-2 ;" eval( -- )

[ t ] [ 3 redefinition-problem'? ] unit-test

! Hardcore unit tests

\ thread "slots" word-prop "slots" set

[ ] [
    [
        \ thread tuple { "xxx" } "slots" get append
        define-tuple-class
    ] with-compilation-unit

    [ 1337 sleep ] "Test" spawn drop

    [
        \ thread tuple "slots" get
        define-tuple-class
    ] with-compilation-unit
] unit-test

\ vocab "slots" word-prop "slots" set

[ ] [
    [
        \ vocab tuple { "xxx" } "slots" get append
        define-tuple-class
    ] with-compilation-unit

    all-words drop

    [
        \ vocab tuple "slots" get
        define-tuple-class
    ] with-compilation-unit
] unit-test

[ "USE: words T{ word }" eval( -- ) ]
[ error>> T{ no-method f word new } = ]
must-fail-with

! Accessors not being forgotten...
[ [ ] ] [
    "IN: classes.tuple.tests TUPLE: forget-accessors-test x y z ;"
    <string-reader>
    "forget-accessors-test" parse-stream
] unit-test

[ t ] [ "forget-accessors-test" "classes.tuple.tests" lookup class? ] unit-test

: accessor-exists? ( name -- ? )
    [ "forget-accessors-test" "classes.tuple.tests" lookup ] dip
    ">>" append "accessors" lookup method >boolean ;

[ t ] [ "x" accessor-exists? ] unit-test
[ t ] [ "y" accessor-exists? ] unit-test
[ t ] [ "z" accessor-exists? ] unit-test

[ [ ] ] [
    "IN: classes.tuple.tests GENERIC: forget-accessors-test ( a -- b )"
    <string-reader>
    "forget-accessors-test" parse-stream
] unit-test

[ f ] [ "forget-accessors-test" "classes.tuple.tests" lookup class? ] unit-test

[ f ] [ "x" accessor-exists? ] unit-test
[ f ] [ "y" accessor-exists? ] unit-test
[ f ] [ "z" accessor-exists? ] unit-test

TUPLE: another-forget-accessors-test ;


[ [ ] ] [
    "IN: classes.tuple.tests GENERIC: another-forget-accessors-test ( a -- b )"
    <string-reader>
    "another-forget-accessors-test" parse-stream
] unit-test

[ t ] [ \ another-forget-accessors-test class? ] unit-test

! Shadowing test
[ f ] [
    t parser-notes? [
        [
            "IN: classes.tuple.tests TUPLE: shadow-1 a b ; TUPLE: shadow-2 < shadow-1 a b ;" eval( -- )
        ] with-string-writer empty?
    ] with-variable
] unit-test

! Missing error check
[ "IN: classes.tuple.tests USE: words TUPLE: wrong-superclass < word ;" eval( -- ) ] must-fail

! Class forget messyness
TUPLE: subclass-forget-test ;

TUPLE: subclass-forget-test-1 < subclass-forget-test ;
TUPLE: subclass-forget-test-2 < subclass-forget-test ;
TUPLE: subclass-forget-test-3 < subclass-forget-test-2 ;

[ ] [ "IN: classes.tuple.tests FORGET: subclass-forget-test" eval( -- ) ] unit-test

[ { subclass-forget-test-2 } ]
[ subclass-forget-test-2 class-usages ]
unit-test

[ { subclass-forget-test-3 } ]
[ subclass-forget-test-3 class-usages ]
unit-test

[ f ] [ subclass-forget-test-1 tuple-class? ] unit-test
[ f ] [ subclass-forget-test-2 tuple-class? ] unit-test
[ subclass-forget-test-3 new ] must-fail

[ "IN: classes.tuple.tests TUPLE: subclass-forget-test-4 < subclass-forget-test-2 ;" eval( -- ) ] must-fail

! More
DEFER: subclass-reset-test
DEFER: subclass-reset-test-1
DEFER: subclass-reset-test-2
DEFER: subclass-reset-test-3

GENERIC: break-me ( obj -- )

[ ] [ [ M\ integer break-me forget ] with-compilation-unit ] unit-test

[ ] [ "IN: classes.tuple.tests TUPLE: subclass-reset-test ;" <string-reader> "subclass-reset-test" parse-stream drop ] unit-test
[ ] [ "IN: classes.tuple.tests TUPLE: subclass-reset-test-1 < subclass-reset-test ;" eval( -- ) ] unit-test
[ ] [ "IN: classes.tuple.tests TUPLE: subclass-reset-test-2 < subclass-reset-test ;" eval( -- ) ] unit-test
[ ] [ "IN: classes.tuple.tests TUPLE: subclass-reset-test-3 < subclass-reset-test-2 ;" eval( -- ) ] unit-test

[ ] [ "IN: classes.tuple.tests USE: kernel M: subclass-reset-test-1 break-me drop ;" eval( -- ) ] unit-test

[ ] [ "IN: classes.tuple.tests : subclass-reset-test ( -- ) ;" <string-reader> "subclass-reset-test" parse-stream drop ] unit-test

[ f ] [ subclass-reset-test-1 tuple-class? ] unit-test
[ f ] [ subclass-reset-test-2 tuple-class? ] unit-test
[ subclass-forget-test-3 new ] must-fail

[ t ] [ \ break-me "methods" word-prop assoc-empty? ] unit-test

[ ] [ "IN: classes.tuple.tests USE: math USE: kernel M: integer break-me drop ;" eval( -- ) ] unit-test

[ f ] [ \ break-me "methods" word-prop assoc-empty? ] unit-test

! Insufficient type checking
[ \ vocab tuple>array drop ] must-fail

! Check type declarations
TUPLE: declared-types { n fixnum } { m string } ;

[ T{ declared-types f 0 "hi" } ]
[ { declared-types 0 "hi" } >tuple ]
unit-test

[ { declared-types "hi" 0 } >tuple ]
[ T{ bad-slot-value f "hi" fixnum } = ]
must-fail-with

[ T{ declared-types f 0 "hi" } ]
[ 0.0 "hi" declared-types boa ] unit-test

: foo ( a b -- c ) declared-types boa ;

\ foo def>> must-infer

[ T{ declared-types f 0 "hi" } ] [ 0.0 "hi" foo ] unit-test

[ "hi" 0.0 declared-types boa ]
[ T{ no-method f "hi" >fixnum } = ]
must-fail-with

[ 0 { } declared-types boa ]
[ T{ bad-slot-value f { } string } = ]
must-fail-with

[ "hi" 0.0 foo ]
[ T{ no-method f "hi" >fixnum } = ]
must-fail-with

[ 0 { } foo ]
[ T{ bad-slot-value f { } string } = ]
must-fail-with

[ T{ declared-types f 0 "" } ] [ declared-types new ] unit-test

: blah ( -- vec ) vector new ;

[ vector new ] must-infer

[ V{ } ] [ blah ] unit-test

! Test reshaping with type declarations and slot attributes
TUPLE: reshape-test x ;

T{ reshape-test f "hi" } "tuple" set

[ ] [ "IN: classes.tuple.tests TUPLE: reshape-test { x read-only } ;" eval( -- ) ] unit-test

[ f ] [ \ reshape-test \ (>>x) method ] unit-test

[ "tuple" get 5 >>x ] must-fail

[ "hi" ] [ "tuple" get x>> ] unit-test

[ ] [ "IN: classes.tuple.tests USE: math TUPLE: reshape-test { x integer read-only } ;" eval( -- ) ] unit-test

[ 0 ] [ "tuple" get x>> ] unit-test

[ ] [ "IN: classes.tuple.tests USE: math TUPLE: reshape-test { x fixnum initial: 4 read-only } ;" eval( -- ) ] unit-test

[ 0 ] [ "tuple" get x>> ] unit-test

TUPLE: boa-coercer-test { x array-capacity } ;

[ fixnum ] [ 0 >bignum boa-coercer-test boa x>> class ] unit-test

[ T{ boa-coercer-test f 0 } ] [ T{ boa-coercer-test } ] unit-test

! Test error classes
ERROR: error-class-test a b c ;

[ "( a b c -- * )" ] [ \ error-class-test stack-effect effect>string ] unit-test
[ f ] [ \ error-class-test "inline" word-prop ] unit-test

[ "IN: classes.tuple.tests ERROR: error-x ; : error-x 3 ;" eval( -- ) ]
[ error>> error>> redefine-error? ] must-fail-with

DEFER: error-y

[ ] [ [ \ error-y dup class? [ forget-class ] [ drop ] if ] with-compilation-unit ] unit-test

[ ] [ "IN: classes.tuple.tests GENERIC: error-y ( a -- b )" eval( -- ) ] unit-test

[ f ] [ \ error-y tuple-class? ] unit-test

[ t ] [ \ error-y generic? ] unit-test

[ ] [ "IN: classes.tuple.tests ERROR: error-y ;" eval( -- ) ] unit-test

[ t ] [ \ error-y tuple-class? ] unit-test

[ f ] [ \ error-y generic? ] unit-test

[ ] [
    "IN: classes.tuple.tests TUPLE: forget-subclass-test ; TUPLE: forget-subclass-test' < forget-subclass-test ;"
    <string-reader> "forget-subclass-test" parse-stream
    drop
] unit-test

[ ] [ "forget-subclass-test'" "classes.tuple.tests" lookup new "bad-object" set ] unit-test

[ ] [
    "IN: classes.tuple.tests TUPLE: forget-subclass-test a ;"
    <string-reader> "forget-subclass-test" parse-stream
    drop
] unit-test

[ ] [
    "IN: sequences TUPLE: reversed { seq read-only } ;" eval( -- )
] unit-test

TUPLE: bogus-hashcode-1 x ;

TUPLE: bogus-hashcode-2 x ;

M: bogus-hashcode-1 hashcode* 2drop 0 >bignum ;

[ ] [ T{ bogus-hashcode-2 f T{ bogus-hashcode-1 } } hashcode drop ] unit-test

DEFER: change-slot-test
SLOT: kex

[ ] [
    "IN: classes.tuple.tests USING: kernel accessors ; TUPLE: change-slot-test ; SLOT: kex M: change-slot-test kex>> drop 3 ;"
    <string-reader> "change-slot-test" parse-stream
    drop
] unit-test

[ t ] [ \ change-slot-test \ kex>> method >boolean ] unit-test

[ ] [
    "IN: classes.tuple.tests USING: kernel accessors ; TUPLE: change-slot-test kex ;"
    <string-reader> "change-slot-test" parse-stream
    drop
] unit-test

[ t ] [ \ change-slot-test \ kex>> method >boolean ] unit-test

[ ] [
    "IN: classes.tuple.tests USING: kernel accessors ; TUPLE: change-slot-test ; SLOT: kex M: change-slot-test kex>> drop 3 ;"
    <string-reader> "change-slot-test" parse-stream
    drop
] unit-test

[ t ] [ \ change-slot-test \ kex>> method >boolean ] unit-test
[ f ] [ \ change-slot-test \ kex>> method "reading" word-prop ] unit-test

DEFER: redefine-tuple-twice

[ ] [ "IN: classes.tuple.tests TUPLE: redefine-tuple-twice ;" eval( -- ) ] unit-test

[ t ] [ \ redefine-tuple-twice symbol? ] unit-test

[ ] [ "IN: classes.tuple.tests DEFER: redefine-tuple-twice" eval( -- ) ] unit-test

[ t ] [ \ redefine-tuple-twice deferred? ] unit-test

[ ] [ "IN: classes.tuple.tests TUPLE: redefine-tuple-twice ;" eval( -- ) ] unit-test

[ t ] [ \ redefine-tuple-twice symbol? ] unit-test