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# Commands covered:  load
#
# 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 (c) 1995 Sun Microsystems, Inc.
# Copyright (c) 1998-1999 by Scriptics Corporation.
#
# 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 2
    namespace import -force ::tcltest::*
}

# Figure out what extension is used for shared libraries on this
# platform.

# Tests require the existence of one of the DLLs in the dltest directory.
set ext [info sharedlibextension]
set testDir [file join [file dirname [info nameofexecutable]] dltest]
set x [file join $testDir pkga$ext]
set dll "[file tail $x]Required"
::tcltest::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]
::tcltest::testConstraint $loaded \
	[expr {![string match *pkga* $alreadyLoaded]}]

set alreadyTotalLoaded [info loaded]

# Certain tests require the 'teststaticpkg' command from tcltest

::tcltest::testConstraint teststaticpkg \
	[string compare {} [info commands teststaticpkg]]

# Test load-10.1 requires the 'testsimplefilesystem' command from tcltest

::tcltest::testConstraint testsimplefilesystem \
	[string compare {} [info commands testsimplefilesystem]]


test load-1.1 {basic errors} {} {
    list [catch {load} msg] $msg
} "1 {wrong \# args: should be \"load fileName ?packageName? ?interp?\"}"
test load-1.2 {basic errors} {} {
    list [catch {load a b c d} msg] $msg
} "1 {wrong \# args: should be \"load fileName ?packageName? ?interp?\"}"
test load-1.3 {basic errors} {} {
    list [catch {load a b foobar} msg] $msg
} {1 {could not find interpreter "foobar"}}
test load-1.4 {basic errors} {} {
    list [catch {load {}} msg] $msg
} {1 {must specify either file name or package name}}
test load-1.5 {basic errors} {} {
    list [catch {load {} {}} msg] $msg
} {1 {must specify either file name or package name}}
test load-1.6 {basic errors} {} {
    list [catch {load {} Unknown} msg] $msg
} {1 {package "Unknown" isn't loaded statically}}

test load-2.1 {basic loading, with guess for package name} \
	[list $dll $loaded] {
    load [file join $testDir pkga$ext]
    list [pkga_eq abc def] [info commands pkga_*]
} {0 {pkga_eq pkga_quote}}
interp create -safe child
test load-2.2 {loading into a safe interpreter, with package name conversion} \
	[list $dll $loaded] {
    load [file join $testDir pkgb$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 load-2.3 {loading with no _Init procedure} -constraints [list $dll $loaded] \
-body {
    list [catch {load [file join $testDir pkgc$ext] foo} msg] $msg
} -match glob -result {1 {*couldn't find procedure Foo_Init}}
test load-2.4 {loading with no _SafeInit procedure} [list $dll $loaded] {
    list [catch {load [file join $testDir pkga$ext] {} child} msg] $msg
} {1 {can't use package in a safe interpreter: no Pkga_SafeInit procedure}}

test load-3.1 {error in _Init procedure, same interpreter} \
	[list $dll $loaded] {
    list [catch {load [file join $testDir pkge$ext] pkge} msg] \
	    $msg $errorInfo $errorCode
} {1 {couldn't open "non_existent": no such file or directory} {couldn't open "non_existent": no such file or directory
    while executing
"open non_existent"
    invoked from within
"if 44 {open non_existent}"
    invoked from within
"load [file join $testDir pkge$ext] pkge"} {POSIX ENOENT {no such file or directory}}}
test load-3.2 {error in _Init procedure, slave interpreter} \
	[list $dll $loaded] {
    catch {interp delete x}
    interp create x
    set errorCode foo
    set errorInfo bar
    set result [list [catch {load [file join $testDir pkge$ext] pkge x} msg] \
	    $msg $errorInfo $errorCode]
    interp delete x
    set result
} {1 {couldn't open "non_existent": no such file or directory} {couldn't open "non_existent": no such file or directory
    while executing
"open non_existent"
    invoked from within
"if 44 {open non_existent}"
    invoked from within
"load [file join $testDir pkge$ext] pkge x"} {POSIX ENOENT {no such file or directory}}}

test load-4.1 {reloading package into same interpreter} [list $dll $loaded] {
    list [catch {load [file join $testDir pkga$ext] pkga} msg] $msg
} {0 {}}
test load-4.2 {reloading package into same interpreter} [list $dll $loaded] {
    list [catch {load [file join $testDir pkga$ext] pkgb} msg] $msg
} [list 1 "file \"[file join $testDir pkga$ext]\" is already loaded for package \"Pkga\""]

test load-5.1 {file name not specified and no static package: pick default} \
	[list $dll $loaded] {
    catch {interp delete x}
    interp create x
    load [file join $testDir pkga$ext] pkga
    load {} pkga x
    set result [info loaded x]
    interp delete x
    set result
} [list [list [file join $testDir pkga$ext] Pkga]]

# On some platforms, like SunOS 4.1.3, these tests can't be run because
# they cause the process to exit.

test load-6.1 {errors loading file} [list $dll $loaded nonPortable] {
    catch {load foo foo}
} {1}

test load-7.1 {Tcl_StaticPackage procedure} [list teststaticpkg] {
    set x "not loaded"
    teststaticpkg Test 1 0
    load {} Test
    load {} Test child
    list [set x] [child eval set x]
} {loaded loaded}
test load-7.2 {Tcl_StaticPackage procedure} [list teststaticpkg] {
    set x "not loaded"
    teststaticpkg Another 0 0
    load {} Another
    child eval {set x "not loaded"}
    list [catch {load {} Another child} msg] $msg \
	[child eval set x] [set x]
} {1 {can't use package in a safe interpreter: no Another_SafeInit procedure} {not loaded} loaded}
test load-7.3 {Tcl_StaticPackage procedure} [list teststaticpkg] {
    set x "not loaded"
    teststaticpkg More 0 1
    load {} More
    set x
} {not loaded}
test load-7.4 {Tcl_StaticPackage procedure, redundant calls} \
    [list teststaticpkg $dll $loaded] {
	teststaticpkg Double 0 1
	teststaticpkg Double 0 1
	info loaded
    } [concat [list {{} Double} {{} More} {{} Another} {{} Test} [list [file join $testDir pkge$ext] Pkge] [list [file join $testDir pkgb$ext] Pkgb] [list [file join $testDir pkga$ext] Pkga]] $alreadyTotalLoaded]

test load-8.1 {TclGetLoadedPackages procedure} [list teststaticpkg $dll $loaded] {
    info loaded
} [concat [list {{} Double} {{} More} {{} Another} {{} Test} [list [file join $testDir pkge$ext] Pkge] [list [file join $testDir pkgb$ext] Pkgb] [list [file join $testDir pkga$ext] Pkga]] $alreadyTotalLoaded]
test load-8.2 {TclGetLoadedPackages procedure} [list teststaticpkg] {
    list [catch {info loaded gorp} msg] $msg
} {1 {could not find interpreter "gorp"}}
test load-8.3 {TclGetLoadedPackages procedure} [list teststaticpkg $dll $loaded] {
    list [info loaded {}] [info loaded child]
} [list [concat [list {{} Double} {{} More} {{} Another} {{} Test} [list [file join $testDir pkga$ext] Pkga]] $alreadyLoaded] [list {{} Test} [list [file join $testDir pkgb$ext] Pkgb]]]
test load-8.4 {TclGetLoadedPackages procedure} [list $dll $loaded teststaticpkg] {
    load [file join $testDir pkgb$ext] pkgb
    list [info loaded {}] [lsort [info commands pkgb_*]]
} [list [concat [list [list [file join $testDir pkgb$ext] Pkgb] {{} Double} {{} More} {{} Another} {{} Test} [list [file join $testDir pkga$ext] Pkga]] $alreadyLoaded] {pkgb_sub pkgb_unsafe}]
interp delete child

test load-9.1 {Tcl_StaticPackage, load already-loaded package into another interp} \
    -constraints {teststaticpkg} \
    -setup {
	interp create child1
	interp create child2
	load {} Tcltest child1
	load {} Tcltest child2
    } \
    -body {
	child1 eval { teststaticpkg Loadninepointone 0 1 }
	child2 eval { teststaticpkg Loadninepointone 0 1 }
	list \
	    [child1 eval { info loaded {} }] \
	    [child2 eval { info loaded {} }]
    } \
    -result {{{{} Loadninepointone} {{} Tcltest}} {{{} Loadninepointone} {{} Tcltest}}} \
    -cleanup { interp delete child1 ; interp delete child2 }

test load-10.1 {load from vfs} \
    -constraints [list $dll $loaded testsimplefilesystem] \
    -setup {set dir [pwd]; cd $testDir; testsimplefilesystem 1} \
    -body {list [catch {load simplefs:/pkgd$ext pkgd} msg] $msg} \
    -result {0 {}} \
    -cleanup {testsimplefilesystem 0; cd $dir; unset dir}

# cleanup
::tcltest::cleanupTests
return