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#
# Tests for deleting classes and objects
# ----------------------------------------------------------------------
# AUTHOR: Michael J. McLennan
# Bell Labs Innovations for Lucent Technologies
# mmclennan@lucent.com
# http://www.tcltk.com/itcl
# ----------------------------------------------------------------------
# Copyright (c) 1993-1998 Lucent Technologies, Inc.
# ======================================================================
# See the file "license.terms" for information on usage and
# redistribution of this file, and for a DISCLAIMER OF ALL WARRANTIES.
package require tcltest 2.1
namespace import ::tcltest::test
::tcltest::loadTestedCommands
# ----------------------------------------------------------------------
# Deleting classes and objects
# ----------------------------------------------------------------------
test delete-1.1 {define a simple classes with inheritance} {
itcl::class test_delete_base {
variable num 0
method show {} {
return $num
}
}
} ""
test delete-1.2 {create some base class objects} {
for {set i 0} {$i < 5} {incr i} {
test_delete_base #auto
}
lsort [itcl::find objects -class test_delete_base]
} {test_delete_base0 test_delete_base1 test_delete_base2 test_delete_base3 test_delete_base4}
test delete-1.3 {delete the base class--class and all objects go away} {
list [itcl::delete class test_delete_base] \
[itcl::find classes test_delete_base] \
[namespace children :: test_delete_base] \
[namespace which -command test_delete_base] \
[itcl::find objects test_delete_base*]
} {{} {} {} {} {}}
# ----------------------------------------------------------------------
# Deleting classes and objects with inheritance
# ----------------------------------------------------------------------
test delete-2.1 {define a simple classes with inheritance} {
variable ::test_delete_watch ""
itcl::class test_delete_base {
variable num 0
method show {} {
return $num
}
destructor {
global ::test_delete_watch
lappend test_delete_watch $this
}
}
itcl::class test_delete {
inherit test_delete_base
method show {} {
return ">$num<"
}
}
} ""
test delete-2.2 {create some base and derived class objects} {
for {set i 0} {$i < 3} {incr i} {
test_delete_base #auto
}
for {set i 0} {$i < 3} {incr i} {
test_delete #auto
}
lsort [itcl::find objects -isa test_delete_base]
} {test_delete0 test_delete1 test_delete2 test_delete_base0 test_delete_base1 test_delete_base2}
test delete-2.3 {delete the base class--class and all objects go away} {
list [itcl::delete class test_delete_base] \
[itcl::find classes test_delete*] \
[namespace children :: test_delete*] \
[namespace which -command test_delete_base] \
[namespace which -command test_delete] \
[itcl::find objects test_delete*]
} {{} {} {} {} {} {}}
test delete-2.4 {object destructors get invoked properly} {
lsort $test_delete_watch
} {::test_delete0 ::test_delete1 ::test_delete2 ::test_delete_base0 ::test_delete_base1 ::test_delete_base2}
# ----------------------------------------------------------------------
# Deleting class namespaces
# ----------------------------------------------------------------------
test delete-3.1 {redefine classes with inheritance} {
variable ::test_delete_watch ""
itcl::class test_delete_base {
variable num 0
method show {} {
return $num
}
destructor {
global test_delete_watch
lappend test_delete_watch $this
}
}
itcl::class test_delete {
inherit test_delete_base
method show {} {
return ">$num<"
}
}
} ""
test delete-3.2 {create some base and derived class objects} {
for {set i 0} {$i < 3} {incr i} {
test_delete_base #auto
}
for {set i 0} {$i < 3} {incr i} {
test_delete #auto
}
lsort [itcl::find objects -isa test_delete_base]
} {test_delete0 test_delete1 test_delete2 test_delete_base0 test_delete_base1 test_delete_base2}
test delete-3.3 {deleting a class namespace is like deleting a class} {
list [namespace delete test_delete_base] \
[itcl::find classes test_delete*] \
[namespace children :: test_delete*] \
[namespace which -command test_delete_base] \
[namespace which -command test_delete] \
[itcl::find objects test_delete*]
} {{} {} {} {} {} {}}
test delete-3.4 {object destructors get invoked, even during catastrophe} {
lsort $test_delete_watch
} {::test_delete0 ::test_delete1 ::test_delete2 ::test_delete_base0 ::test_delete_base1 ::test_delete_base2}
# ----------------------------------------------------------------------
# Self-destructing objects
# ----------------------------------------------------------------------
test delete-4.1 {define a class where objects destroy themselves} {
itcl::class test_delete {
public variable x ""
public variable deletecommand ""
constructor {args} {
eval configure $args
}
destructor {
eval $deletecommand
}
method killme {code} {
itcl::delete object $this
eval $code
}
}
} {}
test delete-4.2 {an object can delete itself} {
set obj [test_delete #auto -x "data stays"]
list [$obj killme {return $x}] [itcl::find objects -isa test_delete]
} {{data stays} {}}
test delete-4.3 {the "this" variable becomes null after delete} {
set obj [test_delete #auto]
list [$obj killme {return $this}] [itcl::find objects -isa test_delete]
} {{} {}}
test delete-4.4 {an object being destructed can't be deleted} {
set obj [test_delete #auto -deletecommand {itcl::delete object $this}]
list [catch {itcl::delete object $obj} msg] $msg
} {1 {can't delete an object while it is being destructed}}
namespace delete test_delete
# ----------------------------------------------------------------------
# Delete objects using path names and scoped values
# ----------------------------------------------------------------------
test delete-5.1 {define a simple class} {
itcl::class test_delete_name {
private variable x 0
method test {x} {
return $x
}
}
} {}
test delete-5.2 {delete using a qualified name} {
namespace eval test_delete2 {test_delete_name #auto}
set cmd {itcl::delete object test_delete2::test_delete_name0}
list [catch $cmd msg] $msg [itcl::find objects -isa test_delete_name]
} {0 {} {}}
test delete-5.3 {delete using a scoped value} {
set obj [namespace eval test_delete2 {itcl::code [test_delete_name #auto]}]
set cmd [list itcl::delete object $obj]
list [catch $cmd msg] $msg [itcl::find objects -isa test_delete_name]
} {0 {} {}}
test delete-5.4 {scoped command names are decoded properly} {
list [catch {itcl::delete object {namespace inscope ::xyzzy xxx}} msg] $msg \
[catch {itcl::delete object {namespace inscope :: xxx yyy}} msg] $msg \
[catch {itcl::delete object {namespace inscope :: xyzzy}} msg] $msg
} {1 {unknown namespace "::xyzzy"} 1 {malformed command "namespace inscope :: xxx yyy": should be "namespace inscope namesp command"} 1 {object "namespace inscope :: xyzzy" not found}}
namespace delete test_delete_name test_delete2
::tcltest::cleanupTests
return
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