# Commands covered:  unload
#
# This file contains a collection of tests for one or more of the Tcl
# built-in commands.  Sourcing this file into Tcl runs the tests and
# generates output for errors.  No output means no errors were found.
#
# Copyright © 1995 Sun Microsystems, Inc.
# Copyright © 1998-1999 Scriptics Corporation.
# Copyright © 2003-2004 Georgios Petasis
#
# See the file "license.terms" for information on usage and redistribution
# of this file, and for a DISCLAIMER OF ALL WARRANTIES.

if {"::tcltest" ni [namespace children]} {
    package require tcltest 2.5
    namespace import -force ::tcltest::*
}

::tcltest::loadTestedCommands
catch [list package require -exact tcl::test [info patchlevel]]

# Figure out what extension is used for shared libraries on this
# platform.
if {![info exists ext]} {
    set ext [info sharedlibextension]
}

# Tests require the existence of one of the DLLs in the dltest directory.
set testDir [file join [file dirname [info nameofexecutable]] dltest]
set x [file join $testDir tcl9pkgua$ext]
set dll "[file tail $x]Required"
testConstraint $dll [file readable $x]

# Tests also require that this DLL has not already been loaded.
set loaded "[file tail $x]Loaded"
set alreadyLoaded [info loaded]
testConstraint $loaded [expr {![string match *pkgua* $alreadyLoaded]}]

set alreadyTotalLoaded [info loaded]

# Certain tests need the 'testsimplefilsystem' in tcltest
testConstraint testsimplefilesystem \
	[llength [info commands testsimplefilesystem]]

proc loadIfNotPresent {pkg args} {
    global testDir ext
    set loaded [lmap x [info loaded {*}$args] {lindex $x 1}]
    if {[string totitle $pkg] ni $loaded} {
	load [file join $testDir tcl9$pkg$ext]
    }
}

# Basic tests: parameter testing...
test unload-1.1 {basic errors} -returnCodes error -body {
    unload
} -result {wrong # args: should be "unload ?-switch ...? fileName ?prefix? ?interp?"}
test unload-1.2 {basic errors} -returnCodes error -body {
    unload a b c d
} -result {wrong # args: should be "unload ?-switch ...? fileName ?prefix? ?interp?"}
test unload-1.3 {basic errors} -returnCodes error -body {
    unload a b foobar
} -result {could not find interpreter "foobar"}
test unload-1.4 {basic errors} -returnCodes error -body {
    unload {}
} -result {must specify either file name or prefix}
test unload-1.5 {basic errors} -returnCodes error -body {
    unload {} {}
} -result {must specify either file name or prefix}
test unload-1.6 {basic errors} -returnCodes error -body {
    unload {} Unknown
} -result {library with prefix "Unknown" is loaded statically and cannot be unloaded}
test unload-1.7 {-nocomplain switch} {
    unload -nocomplain {} Unknown
} {}

set pkgua_loaded {}
set pkgua_detached {}
set pkgua_unloaded {}
# Tests for loading/unloading in trusted (non-safe) interpreters...
test unload-2.1 {basic loading of non-unloadable package, with guess for prefix} [list $dll $loaded] {
    loadIfNotPresent pkga
    list [pkga_eq abc def] [lsort [info commands pkga_*]]
} {0 {pkga_eq pkga_quote}}
test unload-2.2 {basic loading of unloadable package, with guess for prefix} [list $dll $loaded] {
    list $pkgua_loaded $pkgua_detached $pkgua_unloaded \
	    [load [file join $testDir tcl9pkgua$ext]] \
	    [pkgua_eq abc def] [lsort [info commands pkgua_*]] \
	    $pkgua_loaded $pkgua_detached $pkgua_unloaded
} {{} {} {} {} 0 {pkgua_eq pkgua_quote} . {} {}}
test unload-2.3 {basic unloading of non-unloadable package, with guess for prefix} -setup {
    loadIfNotPresent pkga
} -constraints [list $dll $loaded] -returnCodes error -match glob -body {
    unload [file join $testDir tcl9pkga$ext]
} -result {file "*" cannot be unloaded under a trusted interpreter}
test unload-2.4 {basic unloading of unloadable package, with guess for prefix} -setup {
    loadIfNotPresent pkgua
} -constraints [list $dll $loaded] -body {
    list $pkgua_loaded $pkgua_detached $pkgua_unloaded \
	    [unload [file join $testDir tcl9pkgua$ext]] \
	    [info commands pkgua_*] \
	    $pkgua_loaded $pkgua_detached $pkgua_unloaded
} -result {. {} {} {} {} . . .}
test unload-2.5 {reloading of unloaded package, with guess for prefix} -setup {
    if {$pkgua_loaded eq ""} {
	loadIfNotPresent pkgua
	unload [file join $testDir tcl9pkgua$ext]
    }
} -constraints [list $dll $loaded] -body {
    list $pkgua_loaded $pkgua_detached $pkgua_unloaded \
	    [load [file join $testDir tcl9pkgua$ext]] \
	    [pkgua_eq abc def] [lsort [info commands pkgua_*]] \
	    $pkgua_loaded $pkgua_detached $pkgua_unloaded
} -result {. . . {} 0 {pkgua_eq pkgua_quote} .. . .}
test unload-2.6 {basic unloading of re-loaded package, with guess for prefix} -setup {
    # Establish expected state
    if {$pkgua_loaded eq ""} {
	loadIfNotPresent pkgua
	unload [file join $testDir tcl9pkgua$ext]
	load [file join $testDir tcl9pkgua$ext]
    }
} -constraints [list $dll $loaded] -body {
    list $pkgua_loaded $pkgua_detached $pkgua_unloaded \
	    [unload [file join $testDir tcl9pkgua$ext]] \
	    [info commands pkgua_*] \
	    $pkgua_loaded $pkgua_detached $pkgua_unloaded
} -result {.. . . {} {} .. .. ..}

# Tests for loading/unloading in safe interpreters...
interp create -safe child
child eval {
    set pkgua_loaded {}
    set pkgua_detached {}
    set pkgua_unloaded {}
}
test unload-3.1 {basic loading of non-unloadable package in a safe interpreter} \
	[list $dll $loaded] {
    catch {rename pkgb_sub {}}
    load [file join $testDir tcl9pkgb$ext] Pkgb child
    list [child eval pkgb_sub 44 13] [catch {child eval pkgb_unsafe} msg] $msg \
	 [catch {pkgb_sub 12 10} msg2] $msg2
} {31 1 {invalid command name "pkgb_unsafe"} 1 {invalid command name "pkgb_sub"}}
test unload-3.2 {basic loading of unloadable package in a safe interpreter} \
	[list $dll $loaded] {
    list [child eval {list $pkgua_loaded $pkgua_detached $pkgua_unloaded}] \
	    [load [file join $testDir tcl9pkgua$ext] Pkgua child] \
	    [child eval pkgua_eq abc def] \
	    [lsort [child eval info commands pkgua_*]] \
	    [child eval {list $pkgua_loaded $pkgua_detached $pkgua_unloaded}]
} {{{} {} {}} {} 0 {pkgua_eq pkgua_quote} {. {} {}}}
test unload-3.3 {unloading of a package that has never been loaded from a safe interpreter} -setup {
    loadIfNotPresent pkga
} -constraints [list $dll $loaded] -returnCodes error -match glob -body {
    unload [file join $testDir tcl9pkga$ext] {} child
} -result {file "*" has never been loaded in this interpreter}
test unload-3.4 {basic unloading of a non-unloadable package from a safe interpreter, with guess for prefix} -setup {
    if {[lsearch -index 1 [info loaded child] Pkgb] < 0} {
	load [file join $testDir tcl9pkgb$ext] Pkgb child
    }
} -constraints [list $dll $loaded] -returnCodes error -match glob -body {
    unload [file join $testDir tcl9pkgb$ext] {} child
} -result {file "*" cannot be unloaded under a safe interpreter}
test unload-3.5 {basic unloading of an unloadable package from a safe interpreter, with guess for prefix} -setup {
    if {[lsearch -index 1 [info loaded child] Pkgua] < 0} {
	load [file join $testDir tcl9pkgua$ext] Pkgua child
    }
} -constraints [list $dll $loaded] -body {
    list [child eval {list $pkgua_loaded $pkgua_detached $pkgua_unloaded}] \
	    [unload [file join $testDir tcl9pkgua$ext] {} child] \
	    [child eval info commands pkgua_*] \
	    [child eval {list $pkgua_loaded $pkgua_detached $pkgua_unloaded}]
} -result {{. {} {}} {} {} {. . .}}
test unload-3.6 {reloading of unloaded package in a safe interpreter, with guess for prefix} -setup {
    if {[child eval set pkgua_loaded] eq ""} {
	load [file join $testDir tcl9pkgua$ext] {} child
	unload [file join $testDir tcl9pkgua$ext] {} child
    }
} -constraints [list $dll $loaded] -body {
    list [child eval {list $pkgua_loaded $pkgua_detached $pkgua_unloaded}] \
	    [load [file join $testDir tcl9pkgua$ext] {} child] \
	    [child eval pkgua_eq abc def] \
	    [lsort [child eval info commands pkgua_*]] \
	    [child eval {list $pkgua_loaded $pkgua_detached $pkgua_unloaded}]
} -result {{. . .} {} 0 {pkgua_eq pkgua_quote} {.. . .}}
test unload-3.7 {basic unloading of re-loaded package from a safe interpreter, with prefix conversion} -setup {
    if {[child eval set pkgua_loaded] eq ""} {
	load [file join $testDir tcl9pkgua$ext] {} child
	unload [file join $testDir tcl9pkgua$ext] {} child
	load [file join $testDir tcl9pkgua$ext] {} child
    }
} -constraints [list $dll $loaded] -body {
    list [child eval {list $pkgua_loaded $pkgua_detached $pkgua_unloaded}] \
	    [unload [file join $testDir tcl9pkgua$ext] Pkgua child] \
	    [child eval info commands pkgua_*] \
	    [child eval {list $pkgua_loaded $pkgua_detached $pkgua_unloaded}]
} -result {{.. . .} {} {} {.. .. ..}}

# Tests for loading/unloading of a package among multiple interpreters...
interp create child-trusted
child-trusted eval {
    set pkgua_loaded {}
    set pkgua_detached {}
    set pkgua_unloaded {}
}
array set load {M 0 C 0 T 0}
## Load package in main trusted interpreter...
test unload-4.1 {loading of unloadable package in trusted interpreter, with guess for prefix} -setup {
    set pkgua_loaded ""
    set pkgua_detached ""
    set pkgua_unloaded ""
    incr load(M)
} -constraints [list $dll $loaded] -body {
    list [list $pkgua_loaded $pkgua_detached $pkgua_unloaded] \
	    [load [file join $testDir tcl9pkgua$ext]] \
	    [pkgua_eq abc def] [lsort [info commands pkgua_*]] \
	    [list $pkgua_loaded $pkgua_detached $pkgua_unloaded]
} -result {{{} {} {}} {} 0 {pkgua_eq pkgua_quote} {. {} {}}}
## Load package in child-safe interpreter...
test unload-4.2 {basic loading of unloadable package in a safe interpreter} -setup {
    child eval {
	set pkgua_loaded ""
	set pkgua_detached ""
	set pkgua_unloaded ""
    }
    incr load(C)
} -constraints [list $dll $loaded] -body {
    list [child eval {list $pkgua_loaded $pkgua_detached $pkgua_unloaded}] \
	    [load [file join $testDir tcl9pkgua$ext] Pkgua child] \
	    [child eval pkgua_eq abc def] \
	    [lsort [child eval info commands pkgua_*]] \
	    [child eval {list $pkgua_loaded $pkgua_detached $pkgua_unloaded}]
} -result {{{} {} {}} {} 0 {pkgua_eq pkgua_quote} {. {} {}}}
## Load package in child-trusted interpreter...
test unload-4.3 {basic loading of unloadable package in a second trusted interpreter} -setup {
    incr load(T)
} -constraints [list $dll $loaded] -body {
    list [child-trusted eval {list $pkgua_loaded $pkgua_detached $pkgua_unloaded}] \
	    [load [file join $testDir tcl9pkgua$ext] Pkgua child-trusted] \
	    [child-trusted eval pkgua_eq abc def] \
	    [lsort [child-trusted eval info commands pkgua_*]] \
	    [child-trusted eval {list $pkgua_loaded $pkgua_detached $pkgua_unloaded}]
} -result {{{} {} {}} {} 0 {pkgua_eq pkgua_quote} {. {} {}}}
## Unload the package from the main trusted interpreter...
test unload-4.4 {basic unloading of unloadable package from trusted interpreter, with guess for prefix} -setup {
    if {!$load(M)} {
	load [file join $testDir tcl9pkgua$ext]
    }
    if {!$load(C)} {
	load [file join $testDir tcl9pkgua$ext] {} child
	incr load(C)
    }
    if {!$load(T)} {
	load [file join $testDir tcl9pkgua$ext] {} child-trusted
	incr load(T)
    }
} -constraints [list $dll $loaded] -body {
    list [list $pkgua_loaded $pkgua_detached $pkgua_unloaded] \
	    [unload [file join $testDir tcl9pkgua$ext]] \
	    [info commands pkgua_*] \
	    [list $pkgua_loaded $pkgua_detached $pkgua_unloaded]
} -result {{. {} {}} {} {} {. . {}}}
## Unload the package from the child safe interpreter...
test unload-4.5 {basic unloading of unloadable package from a safe interpreter, with guess for prefix} -setup {
    if {!$load(C)} {
	load [file join $testDir tcl9pkgua$ext] {} child
    }
    if {!$load(T)} {
	load [file join $testDir tcl9pkgua$ext] {} child-trusted
	incr load(T)
    }
} -constraints [list $dll $loaded] -body {
    list [child eval {list $pkgua_loaded $pkgua_detached $pkgua_unloaded}] \
	    [unload [file join $testDir tcl9pkgua$ext] {} child] \
	    [child eval info commands pkgua_*] \
	    [child eval {list $pkgua_loaded $pkgua_detached $pkgua_unloaded}]
} -result {{. {} {}} {} {} {. . {}}}
## Unload the package from the child trusted interpreter...
test unload-4.6 {basic unloading of unloadable package from a safe interpreter, with guess for prefix} -setup {
    if {!$load(T)} {
	load [file join $testDir tcl9pkgua$ext] {} child-trusted
    }
} -constraints [list $dll $loaded] -body {
    list [child-trusted eval {list $pkgua_loaded $pkgua_detached $pkgua_unloaded}] \
	    [unload [file join $testDir tcl9pkgua$ext] {} child-trusted] \
	    [child-trusted eval info commands pkgua_*] \
	    [child-trusted eval {list $pkgua_loaded $pkgua_detached $pkgua_unloaded}]
} -result {{. {} {}} {} {} {. . .}}

test unload-5.1 {unload a module loaded from vfs} \
     -constraints [list $dll $loaded testsimplefilesystem] \
     -setup {
	 set dir [pwd]
	 cd $testDir
	 testsimplefilesystem 1
	 load simplefs:/tcl9pkgua$ext Pkgua
     } \
    -body {
	list [catch {unload simplefs:/tcl9pkgua$ext} msg] $msg
    } \
    -result {0 {}}

# cleanup
interp delete child
interp delete child-trusted
unset ext
::tcltest::cleanupTests
return

# Local Variables:
# mode: tcl
# End: