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authorWilliam Joye <wjoye@cfa.harvard.edu>2016-12-21 22:47:21 (GMT)
committerWilliam Joye <wjoye@cfa.harvard.edu>2016-12-21 22:47:21 (GMT)
commit5514e37335c012cc70f5b9aee3cedfe3d57f583f (patch)
tree4ba7d8aad13735e52f59bdce7ca5ba3151ebd7e3 /tcl8.6/tests/coroutine.test
parent768f87f613cc9789fcf8073018fa02178c8c91df (diff)
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-# Commands covered: coroutine, yield, yieldto, [info coroutine]
-#
-# This file contains a collection of tests for experimental commands that are
-# found in ::tcl::unsupported. The tests will migrate to normal test files
-# if/when the commands find their way into the core.
-#
-# Copyright (c) 2008 by Miguel Sofer.
-#
-# See the file "license.terms" for information on usage and redistribution
-# of this file, and for a DISCLAIMER OF ALL WARRANTIES.
-
-if {[lsearch [namespace children] ::tcltest] == -1} {
- package require tcltest
- namespace import -force ::tcltest::*
-}
-
-::tcltest::loadTestedCommands
-catch [list package require -exact Tcltest [info patchlevel]]
-
-testConstraint testnrelevels [llength [info commands testnrelevels]]
-testConstraint memory [llength [info commands memory]]
-
-set lambda [list {{start 0} {stop 10}} {
- # init
- set i $start
- set imax $stop
- yield
- while {$i < $imax} {
- yield [expr {$i*$stop}]
- incr i
- }
-}]
-
-test coroutine-1.1 {coroutine basic} -setup {
- coroutine foo ::apply $lambda
- set res {}
-} -body {
- for {set k 1} {$k < 4} {incr k} {
- lappend res [foo]
- }
- set res
-} -cleanup {
- rename foo {}
- unset res
-} -result {0 10 20}
-test coroutine-1.2 {coroutine basic} -setup {
- coroutine foo ::apply $lambda 2 8
- set res {}
-} -body {
- for {set k 1} {$k < 4} {incr k} {
- lappend res [foo]
- }
- set res
-} -cleanup {
- rename foo {}
- unset res
-} -result {16 24 32}
-test coroutine-1.3 {yield returns new arg} -setup {
- set body {
- # init
- set i $start
- set imax $stop
- yield
- while {$i < $imax} {
- set stop [yield [expr {$i*$stop}]]
- incr i
- }
- }
- coroutine foo ::apply [list {{start 2} {stop 10}} $body]
- set res {}
-} -body {
- for {set k 1} {$k < 4} {incr k} {
- lappend res [foo $k]
- }
- set res
-} -cleanup {
- rename foo {}
- unset res
-} -result {20 6 12}
-test coroutine-1.4 {yield in nested proc} -setup {
- proc moo {} {
- upvar 1 i i stop stop
- yield [expr {$i*$stop}]
- }
- set body {
- # init
- set i $start
- set imax $stop
- yield
- while {$i < $imax} {
- moo
- incr i
- }
- }
- coroutine foo ::apply [list {{start 0} {stop 10}} $body]
- set res {}
-} -body {
- for {set k 1} {$k < 4} {incr k} {
- lappend res [foo $k]
- }
- set res
-} -cleanup {
- rename foo {}
- rename moo {}
- unset body res
-} -result {0 10 20}
-test coroutine-1.5 {just yield} -body {
- coroutine foo yield
- list [foo] [catch foo msg] $msg
-} -cleanup {
- unset msg
-} -result {{} 1 {invalid command name "foo"}}
-test coroutine-1.6 {just yield} -body {
- coroutine foo [list yield]
- list [foo] [catch foo msg] $msg
-} -cleanup {
- unset msg
-} -result {{} 1 {invalid command name "foo"}}
-test coroutine-1.7 {yield in nested uplevel} -setup {
- set body {
- # init
- set i $start
- set imax $stop
- yield
- while {$i < $imax} {
- uplevel 0 [list yield [expr {$i*$stop}]]
- incr i
- }
- }
- coroutine foo ::apply [list {{start 0} {stop 10}} $body]
- set res {}
-} -body {
- for {set k 1} {$k < 4} {incr k} {
- lappend res [eval foo $k]
- }
- set res
-} -cleanup {
- rename foo {}
- unset body res
-} -result {0 10 20}
-test coroutine-1.8 {yield in nested uplevel} -setup {
- set body {
- # init
- set i $start
- set imax $stop
- yield
- while {$i < $imax} {
- uplevel 0 yield [expr {$i*$stop}]
- incr i
- }
- }
- coroutine foo ::apply [list {{start 0} {stop 10}} $body]
- set res {}
-} -body {
- for {set k 1} {$k < 4} {incr k} {
- lappend res [eval foo $k]
- }
- set res
-} -cleanup {
- rename foo {}
- unset body res
-} -result {0 10 20}
-test coroutine-1.9 {yield in nested eval} -setup {
- proc moo {} {
- upvar 1 i i stop stop
- yield [expr {$i*$stop}]
- }
- set body {
- # init
- set i $start
- set imax $stop
- yield
- while {$i < $imax} {
- eval moo
- incr i
- }
- }
- coroutine foo ::apply [list {{start 0} {stop 10}} $body]
- set res {}
-} -body {
- for {set k 1} {$k < 4} {incr k} {
- lappend res [foo $k]
- }
- set res
-} -cleanup {
- rename moo {}
- unset body res
-} -result {0 10 20}
-test coroutine-1.10 {yield in nested eval} -setup {
- set body {
- # init
- set i $start
- set imax $stop
- yield
- while {$i < $imax} {
- eval yield [expr {$i*$stop}]
- incr i
- }
- }
- coroutine foo ::apply [list {{start 0} {stop 10}} $body]
- set res {}
-} -body {
- for {set k 1} {$k < 4} {incr k} {
- lappend res [eval foo $k]
- }
- set res
-} -cleanup {
- unset body res
-} -result {0 10 20}
-test coroutine-1.11 {yield outside coroutine} -setup {
- proc moo {} {
- upvar 1 i i stop stop
- yield [expr {$i*$stop}]
- }
-} -body {
- variable i 5 stop 6
- moo
-} -cleanup {
- rename moo {}
- unset i stop
-} -returnCodes error -result {yield can only be called in a coroutine}
-test coroutine-1.12 {proc as coroutine} -setup {
- set body {
- # init
- set i $start
- set imax $stop
- yield
- while {$i < $imax} {
- uplevel 0 [list yield [expr {$i*$stop}]]
- incr i
- }
- }
- proc moo {{start 0} {stop 10}} $body
- coroutine foo moo 2 8
-} -body {
- list [foo] [foo]
-} -cleanup {
- unset body
- rename moo {}
- rename foo {}
-} -result {16 24}
-test coroutine-1.13 {subst as coroutine: literal} {
- list [coroutine foo eval {subst {>>[yield a],[yield b]<<}}] [foo x] [foo y]
-} {a b >>x,y<<}
-test coroutine-1.14 {subst as coroutine: in variable} {
- set pattern {>>[yield c],[yield d]<<}
- list [coroutine foo eval {subst $pattern}] [foo p] [foo q]
-} {c d >>p,q<<}
-
-test coroutine-2.1 {self deletion on return} -body {
- coroutine foo set x 3
- foo
-} -returnCodes error -result {invalid command name "foo"}
-test coroutine-2.2 {self deletion on return} -body {
- coroutine foo ::apply [list {} {yield; yield 1; return 2}]
- list [foo] [foo] [catch foo msg] $msg
-} -result {1 2 1 {invalid command name "foo"}}
-test coroutine-2.3 {self deletion on error return} -body {
- coroutine foo ::apply [list {} {yield;yield 1; error ouch!}]
- list [foo] [catch foo msg] $msg [catch foo msg] $msg
-} -result {1 1 ouch! 1 {invalid command name "foo"}}
-test coroutine-2.4 {self deletion on other return} -body {
- coroutine foo ::apply [list {} {yield;yield 1; return -code 100 ouch!}]
- list [foo] [catch foo msg] $msg [catch foo msg] $msg
-} -result {1 100 ouch! 1 {invalid command name "foo"}}
-test coroutine-2.5 {deletion of suspended coroutine} -body {
- coroutine foo ::apply [list {} {yield; yield 1; return 2}]
- list [foo] [rename foo {}] [catch foo msg] $msg
-} -result {1 {} 1 {invalid command name "foo"}}
-test coroutine-2.6 {deletion of running coroutine} -body {
- coroutine foo ::apply [list {} {yield; rename foo {}; yield 1; return 2}]
- list [foo] [catch foo msg] $msg
-} -result {1 1 {invalid command name "foo"}}
-
-test coroutine-3.1 {info level computation} -setup {
- proc a {} {while 1 {yield [info level]}}
- proc b {} foo
-} -body {
- # note that coroutines execute in uplevel #0
- set l0 [coroutine foo a]
- set l1 [foo]
- set l2 [b]
- list $l0 $l1 $l2
-} -cleanup {
- rename a {}
- rename b {}
-} -result {1 1 1}
-test coroutine-3.2 {info frame computation} -setup {
- proc a {} {while 1 {yield [info frame]}}
- proc b {} foo
-} -body {
- set l0 [coroutine foo a]
- set l1 [foo]
- set l2 [b]
- expr {$l2 - $l1}
-} -cleanup {
- rename a {}
- rename b {}
-} -result 1
-test coroutine-3.3 {info coroutine} -setup {
- proc a {} {info coroutine}
- proc b {} a
-} -body {
- b
-} -cleanup {
- rename a {}
- rename b {}
-} -result {}
-test coroutine-3.4 {info coroutine} -setup {
- proc a {} {info coroutine}
- proc b {} a
-} -body {
- coroutine foo b
-} -cleanup {
- rename a {}
- rename b {}
-} -result ::foo
-test coroutine-3.5 {info coroutine} -setup {
- proc a {} {info coroutine}
- proc b {} {rename [info coroutine] {}; a}
-} -body {
- coroutine foo b
-} -cleanup {
- rename a {}
- rename b {}
-} -result {}
-test coroutine-3.6 {info frame, bug #2910094} -setup {
- proc stack {} {
- set res [list "LEVEL:[set lev [info frame]]"]
- for {set i 1} {$i < $lev} {incr i} {
- lappend res [info frame $i]
- }
- set res
- # the precise command depends on line numbers and such, is likely not
- # to be stable: just check that the test completes!
- return
- }
- proc a {} stack
-} -body {
- coroutine aa a
-} -cleanup {
- rename stack {}
- rename a {}
-} -result {}
-test coroutine-3.7 {bug 0b874c344d} {
- dict get [coroutine X coroutine Y info frame 0] cmd
-} {coroutine X coroutine Y info frame 0}
-
-test coroutine-4.1 {bug #2093188} -setup {
- proc foo {} {
- set v 1
- trace add variable v {write unset} bar
- yield
- set v 2
- yield
- set v 3
- }
- proc bar args {lappend ::res $args}
- coroutine a foo
-} -body {
- list [a] [a] $::res
-} -cleanup {
- rename foo {}
- rename bar {}
- unset ::res
-} -result {{} 3 {{v {} write} {v {} write} {v {} unset}}}
-test coroutine-4.2 {bug #2093188} -setup {
- proc foo {} {
- set v 1
- trace add variable v {read unset} bar
- yield
- set v 2
- set v
- yield
- set v 3
- }
- proc bar args {lappend ::res $args}
- coroutine a foo
-} -body {
- list [a] [a] $::res
-} -cleanup {
- rename foo {}
- rename bar {}
- unset ::res
-} -result {{} 3 {{v {} read} {v {} unset}}}
-
-test coroutine-4.3 {bug #2093947} -setup {
- proc foo {} {
- set v 1
- trace add variable v {write unset} bar
- yield
- set v 2
- yield
- set v 3
- }
- proc bar args {lappend ::res $args}
-} -body {
- coroutine a foo
- a
- a
- coroutine a foo
- a
- rename a {}
- set ::res
-} -cleanup {
- rename foo {}
- rename bar {}
- unset ::res
-} -result {{v {} write} {v {} write} {v {} unset} {v {} write} {v {} unset}}
-
-test coroutine-4.4 {bug #2917627: cmd resolution} -setup {
- proc a {} {return global}
- namespace eval b {proc a {} {return local}}
-} -body {
- namespace eval b {coroutine foo a}
-} -cleanup {
- rename a {}
- namespace delete b
-} -result local
-
-test coroutine-4.5 {bug #2724403} -constraints {memory} \
--setup {
- proc getbytes {} {
- set lines [split [memory info] "\n"]
- lindex $lines 3 3
- }
-} -body {
- set end [getbytes]
- for {set i 0} {$i < 5} {incr i} {
- set ns ::y$i
- namespace eval $ns {}
- proc ${ns}::start {} {yield; puts hello}
- coroutine ${ns}::run ${ns}::start
- namespace delete $ns
- set start $end
- set end [getbytes]
- }
- set leakedBytes [expr {$end - $start}]
-} -cleanup {
- rename getbytes {}
- unset i ns start end
-} -result 0
-
-test coroutine-4.6 {compile context, bug #3282869} -setup {
- unset -nocomplain ::x
- proc f x {
- coroutine D eval {yield X$x;yield Y}
- }
-} -body {
- f 12
-} -cleanup {
- rename f {}
-} -returnCodes error -match glob -result {can't read *}
-
-test coroutine-4.7 {compile context, bug #3282869} -setup {
- proc f x {
- coroutine D eval {yield X$x;yield Y$x}
- }
-} -body {
- set ::x 15
- set ::x [f 12]
- D
-} -cleanup {
- D
- unset ::x
- rename f {}
-} -result YX15
-
-test coroutine-5.1 {right numLevels on coro return} -constraints {testnrelevels} \
--setup {
- proc nestedYield {{val {}}} {
- yield $val
- }
- proc getNumLevel {} {
- # remove the level for this proc's call
- expr {[lindex [testnrelevels] 1] - 1}
- }
- proc relativeLevel base {
- # remove the level for this proc's call
- expr {[getNumLevel] - $base - 1}
- }
- proc foo {} {
- while 1 {
- nestedYield
- }
- }
- set res {}
-} -body {
- set base [getNumLevel]
- lappend res [relativeLevel $base]
- eval {coroutine a foo}
- # back to base level
- lappend res [relativeLevel $base]
- a
- lappend res [relativeLevel $base]
- eval a
- lappend res [relativeLevel $base]
- eval {eval a}
- lappend res [relativeLevel $base]
- rename a {}
- lappend res [relativeLevel $base]
- set res
-} -cleanup {
- rename foo {}
- rename nestedYield {}
- rename getNumLevel {}
- rename relativeLevel {}
- unset res
-} -result {0 0 0 0 0 0}
-test coroutine-5.2 {right numLevels within coro} -constraints {testnrelevels} \
--setup {
- proc nestedYield {{val {}}} {
- yield $val
- }
- proc getNumLevel {} {
- # remove the level for this proc's call
- expr {[lindex [testnrelevels] 1] - 1}
- }
- proc relativeLevel base {
- # remove the level for this proc's call
- expr {[getNumLevel] - $base - 1}
- }
- proc foo base {
- while 1 {
- set base [nestedYield [relativeLevel $base]]
- }
- }
- set res {}
-} -body {
- lappend res [eval {coroutine a foo [getNumLevel]}]
- lappend res [a [getNumLevel]]
- lappend res [eval {a [getNumLevel]}]
- lappend res [eval {eval {a [getNumLevel]}}]
- set base [lindex $res 0]
- foreach x $res[set res {}] {
- lappend res [expr {$x-$base}]
- }
- set res
-} -cleanup {
- rename a {}
- rename foo {}
- rename nestedYield {}
- rename getNumLevel {}
- rename relativeLevel {}
- unset res
-} -result {0 0 0 0}
-
-test coroutine-6.1 {coroutine nargs} -body {
- coroutine a ::apply $lambda
- a
-} -cleanup {
- rename a {}
-} -result 0
-test coroutine-6.2 {coroutine nargs} -body {
- coroutine a ::apply $lambda
- a a
-} -cleanup {
- rename a {}
-} -result 0
-test coroutine-6.3 {coroutine nargs} -body {
- coroutine a ::apply $lambda
- a a a
-} -cleanup {
- rename a {}
-} -returnCodes error -result {wrong # args: should be "a ?arg?"}
-
-test coroutine-7.1 {yieldto} -body {
- coroutine c apply {{} {
- yield
- yieldto return -level 0 -code 1 quux
- return quuy
- }}
- set res [list [catch c msg] $msg]
- lappend res [catch c msg] $msg
- lappend res [catch c msg] $msg
-} -cleanup {
- unset res
-} -result [list 1 quux 0 quuy 1 {invalid command name "c"}]
-test coroutine-7.2 {multi-argument yielding with yieldto} -body {
- proc corobody {} {
- set a 1
- while 1 {
- set a [yield $a]
- set a [yieldto return -level 0 $a]
- lappend a [llength $a]
- }
- }
- coroutine a corobody
- coroutine b corobody
- list [a x] [a y z] [a \{p] [a \{q r] [a] [a] [rename a {}] \
- [b ok] [rename b {}]
-} -cleanup {
- rename corobody {}
-} -result {x {y z 2} \{p {\{q r 2} {} 0 {} ok {}}
-test coroutine-7.3 {yielding between coroutines} -body {
- proc juggler {target {value ""}} {
- if {$value eq ""} {
- set value [yield [info coroutine]]
- }
- while {[llength $value]} {
- lappend ::result $value [info coroutine]
- set value [lrange $value 0 end-1]
- lassign [yieldto $target $value] value
- }
- # Clear nested collection of coroutines
- catch $target
- }
- set result ""
- coroutine j1 juggler [coroutine j2 juggler [coroutine j3 juggler j1]]\
- {a b c d e}
- list $result [info command j1] [info command j2] [info command j3]
-} -cleanup {
- catch {rename juggler ""}
-} -result {{{a b c d e} ::j1 {a b c d} ::j2 {a b c} ::j3 {a b} ::j1 a ::j2} {} {} {}}
-test coroutine-7.4 {Bug 8ff0cb9fe1} -setup {
- proc foo {a b} {catch yield; return 1}
-} -cleanup {
- rename foo {}
-} -body {
- coroutine demo lsort -command foo {a b}
-} -result {b a}
-test coroutine-7.5 {return codes} {
- set result {}
- foreach code {0 1 2 3 4 5} {
- lappend result [catch {coroutine demo return -level 0 -code $code}]
- }
- set result
-} {0 1 2 3 4 5}
-test coroutine-7.6 {Early yield crashes} {
- proc foo args {}
- trace add execution foo enter {catch yield}
- coroutine demo foo
- rename foo {}
-} {}
-test coroutine-7.7 {Bug 2486550} -setup {
- interp hide {} yield
-} -body {
- coroutine demo interp invokehidden {} yield ok
-} -cleanup {
- demo
- interp expose {} yield
-} -result ok
-test coroutine-7.8 {yieldto context nuke: Bug a90d9331bc} -setup {
- namespace eval cotest {}
- set ::result ""
-} -body {
- proc cotest::body {} {
- lappend ::result a
- yield OUT
- lappend ::result b
- yieldto ::return -level 0 123
- lappend ::result c
- return
- }
- lappend ::result [coroutine cotest cotest::body]
- namespace delete cotest
- namespace eval cotest {}
- lappend ::result [cotest]
- cotest
- return $result
-} -returnCodes error -cleanup {
- catch {namespace delete ::cotest}
- catch {rename cotest ""}
-} -result {yieldto called in deleted namespace}
-test coroutine-7.9 {yieldto context nuke: Bug a90d9331bc} -setup {
- namespace eval cotest {}
- set ::result ""
-} -body {
- proc cotest::body {} {
- set y ::yieldto
- lappend ::result a
- yield OUT
- lappend ::result b
- $y ::return -level 0 123
- lappend ::result c
- return
- }
- lappend ::result [coroutine cotest cotest::body]
- namespace delete cotest
- namespace eval cotest {}
- lappend ::result [cotest]
- cotest
- return $result
-} -returnCodes error -cleanup {
- catch {namespace delete ::cotest}
- catch {rename cotest ""}
-} -result {yieldto called in deleted namespace}
-test coroutine-7.10 {yieldto context nuke: Bug a90d9331bc} -setup {
- namespace eval cotest {}
- set ::result ""
-} -body {
- proc cotest::body {} {
- lappend ::result a
- yield OUT
- lappend ::result b
- yieldto ::return -level 0 -cotest [namespace delete ::cotest] 123
- lappend ::result c
- return
- }
- lappend ::result [coroutine cotest cotest::body]
- lappend ::result [cotest]
- cotest
- return $result
-} -returnCodes error -cleanup {
- catch {namespace delete ::cotest}
- catch {rename cotest ""}
-} -result {yieldto called in deleted namespace}
-test coroutine-7.11 {yieldto context nuke: Bug a90d9331bc} -setup {
- namespace eval cotest {}
- set ::result ""
-} -body {
- proc cotest::body {} {
- set y ::yieldto
- lappend ::result a
- yield OUT
- lappend ::result b
- $y ::return -level 0 -cotest [namespace delete ::cotest] 123
- lappend ::result c
- return
- }
- lappend ::result [coroutine cotest cotest::body]
- lappend ::result [cotest]
- cotest
- return $result
-} -returnCodes error -cleanup {
- catch {namespace delete ::cotest}
- catch {rename cotest ""}
-} -result {yieldto called in deleted namespace}
-test coroutine-7.12 {coro floor above street level #3008307} -body {
- proc c {} {
- yield
- }
- proc cc {} {
- coroutine C c
- }
- proc boom {} {
- cc ; # coro created at level 2
- C ; # and called at level 1
- }
- boom ; # does not crash: the coro floor is a good insulator
- list
-} -result {}
-
-
-# cleanup
-unset lambda
-::tcltest::cleanupTests
-
-return
-
-# Local Variables:
-# mode: tcl
-# End: