path: root/tests/uplevel.test

# Commands covered:  uplevel
#
# 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) 1991-1993 The Regents of the University of California.
# Copyright (c) 1994 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
    namespace import -force ::tcltest::*
}

proc a {x y} {
    newset z [expr $x+$y]
    return $z
}
proc newset {name value} {
    uplevel set $name $value
    uplevel 1 {uplevel 1 {set xyz 22}}
}

test uplevel-1.1 {simple operation} {
    set xyz 0
    a 22 33
} 55
test uplevel-1.2 {command is another uplevel command} {
    set xyz 0
    a 22 33
    set xyz
} 22

proc a1 {} {
    b1
    global a a1
    set a $x
    set a1 $y
}
proc b1 {} {
    c1
    global b b1
    set b $x
    set b1 $y
}
proc c1 {} {
    uplevel 1 set x 111
    uplevel #2 set y 222
    uplevel 2 set x 333
    uplevel #1 set y 444
    uplevel 3 set x 555
    uplevel #0 set y 666
}
a1
test uplevel-2.1 {relative and absolute uplevel} {set a} 333
test uplevel-2.2 {relative and absolute uplevel} {set a1} 444
test uplevel-2.3 {relative and absolute uplevel} {set b} 111
test uplevel-2.4 {relative and absolute uplevel} {set b1} 222
test uplevel-2.5 {relative and absolute uplevel} {set x} 555
test uplevel-2.6 {relative and absolute uplevel} {set y} 666

test uplevel-3.1 {uplevel to same level} {
    set x 33
    uplevel #0 set x 44
    set x
} 44
test uplevel-3.2 {uplevel to same level} {
    set x 33
    uplevel 0 set x
} 33
test uplevel-3.3 {uplevel to same level} {
    set y xxx
    proc a1 {} {set y 55; uplevel 0 set y 66; return $y}
    a1
} 66
test uplevel-3.4 {uplevel to same level} {
    set y zzz
    proc a1 {} {set y 55; uplevel #1 set y}
    a1
} 55

test uplevel-4.1 {error: non-existent level} -returnCodes error -body {
    apply {{} {
	uplevel #2 {set y 222}
    }}
} -result {bad level "#2"}
test uplevel-4.2 {error: non-existent level} -returnCodes error -body {
    apply {{} {
	uplevel 3 {set a b}
    }}
} -result {bad level "3"}
test uplevel-4.3 {error: not enough args} -returnCodes error -body {
    uplevel
} -result {wrong # args: should be "uplevel ?level? command ?arg ...?"}
test uplevel-4.4 {error: not enough args} -returnCodes error -body {
    apply {{} {
	uplevel 1
    }}
} -result {wrong # args: should be "uplevel ?level? command ?arg ...?"}
test uplevel-4.5 {level parsing} {
    apply {{} {uplevel 0 {}}}
} {}
test uplevel-4.6 {level parsing} {
    apply {{} {uplevel #0 {}}}
} {}
test uplevel-4.7 {level parsing} {
    apply {{} {uplevel [expr 0] {}}}
} {}
test uplevel-4.8 {level parsing} {
    apply {{} {uplevel #[expr 0] {}}}
} {}
test uplevel-4.9 {level parsing} {
    apply {{} {uplevel -0 {}}}
} {}
test uplevel-4.10 {level parsing} {
    apply {{} {uplevel #-0 {}}}
} {}
test uplevel-4.11 {level parsing} {
    apply {{} {uplevel [expr -0] {}}}
} {}
test uplevel-4.12 {level parsing} {
    apply {{} {uplevel #[expr -0] {}}}
} {}
test uplevel-4.13 {level parsing} {
    apply {{} {uplevel 1 {}}}
} {}
test uplevel-4.14 {level parsing} {
    apply {{} {uplevel #1 {}}}
} {}
test uplevel-4.15 {level parsing} {
    apply {{} {uplevel [expr 1] {}}}
} {}
test uplevel-4.16 {level parsing} {
    apply {{} {uplevel #[expr 1] {}}}
} {}
test uplevel-4.17 {level parsing} {
    apply {{} {uplevel -0xffffffff {}}}
} {}
test uplevel-4.18 {level parsing} {
    apply {{} {uplevel #-0xffffffff {}}}
} {}
test uplevel-4.19 {level parsing} {
    apply {{} {uplevel [expr -0xffffffff] {}}}
} {}
test uplevel-4.20 {level parsing} {
    apply {{} {uplevel #[expr -0xffffffff] {}}}
} {}
test uplevel-4.21 {level parsing} -body {
    apply {{} {uplevel -1 {}}}
} -returnCodes error -result {invalid command name "-1"}
test uplevel-4.22 {level parsing} -body {
    apply {{} {uplevel #-1 {}}}
} -returnCodes error -result {bad level "#-1"}
test uplevel-4.23 {level parsing} -body {
    apply {{} {uplevel [expr -1] {}}}
} -returnCodes error -result {invalid command name "-1"}
test uplevel-4.24 {level parsing} -body {
    apply {{} {uplevel #[expr -1] {}}}
} -returnCodes error -result {bad level "#-1"}
test uplevel-4.25 {level parsing} -body {
    apply {{} {uplevel 0xffffffff {}}}
} -returnCodes error -result {bad level "0xffffffff"}
test uplevel-4.26 {level parsing} -body {
    apply {{} {uplevel #0xffffffff {}}}
} -returnCodes error -result {bad level "#0xffffffff"}
test uplevel-4.27 {level parsing} -body {
    apply {{} {uplevel [expr 0xffffffff] {}}}
} -returnCodes error -result {bad level "4294967295"}
test uplevel-4.28 {level parsing} -body {
    apply {{} {uplevel #[expr 0xffffffff] {}}}
} -returnCodes error -result {bad level "#4294967295"}
test uplevel-4.29 {level parsing} -body {
    apply {{} {uplevel 0.2 {}}}
} -returnCodes error -result {bad level "0.2"}
test uplevel-4.30 {level parsing} -body {
    apply {{} {uplevel #0.2 {}}}
} -returnCodes error -result {bad level "#0.2"}
test uplevel-4.31 {level parsing} -body {
    apply {{} {uplevel [expr 0.2] {}}}
} -returnCodes error -result {bad level "0.2"}
test uplevel-4.32 {level parsing} -body {
    apply {{} {uplevel #[expr 0.2] {}}}
} -returnCodes error -result {bad level "#0.2"}
test uplevel-4.33 {level parsing} -body {
    apply {{} {uplevel .2 {}}}
} -returnCodes error -result {invalid command name ".2"}
test uplevel-4.34 {level parsing} -body {
    apply {{} {uplevel #.2 {}}}
} -returnCodes error -result {bad level "#.2"}
test uplevel-4.35 {level parsing} -body {
    apply {{} {uplevel [expr .2] {}}}
} -returnCodes error -result {bad level "0.2"}
test uplevel-4.36 {level parsing} -body {
    apply {{} {uplevel #[expr .2] {}}}
} -returnCodes error -result {bad level "#0.2"}




proc a2 {} {
    uplevel a3
}
proc a3 {} {
    global x y
    set x [info level]
    set y [info level 1]
}
a2
test uplevel-5.1 {info level} {set x} 1
test uplevel-5.2 {info level} {set y} a3

namespace eval ns1 {
    proc set args {return ::ns1}
}
proc a2 {} {
    uplevel {set x ::}
}
test uplevel-6.1 {uplevel and shadowed cmds} {
    set res [namespace eval ns1 a2]
    lappend res [namespace eval ns2 a2]
    lappend res [namespace eval ns1 a2]
    namespace eval ns1 {rename set {}}
    lappend res [namespace eval ns1 a2]
} {::ns1 :: ::ns1 ::}

#
# These tests verify that upleveled scripts run in the correct level and access
# the proper variables.
#

test uplevel-7.1 {var access, no LVT in either level} -setup {
    set x 1
    unset -nocomplain y z
} -body {
    namespace eval foo {
	set x 2
	set y 2
	uplevel 1 {
	    set x 3
	    set y 3
	    set z 3
	}
    }
    list $x $y $z
} -cleanup {
    namespace delete foo
    unset -nocomplain x y z
} -result {3 3 3}

test uplevel-7.2 {var access, no LVT in upper level} -setup {
    set x 1
    unset -nocomplain y z
} -body {
    proc foo {} {
	set x 2
	set y 2
	uplevel 1 {
	    set x 3
	    set y 3
	    set z 3
	}
    }
    foo
    list $x $y $z
} -cleanup {
    rename foo {}
    unset -nocomplain x y z
} -result {3 3 3}

test uplevel-7.3 {var access, LVT in upper level} -setup {
    proc moo {} {
	set x 1; #var in LVT
	unset -nocomplain y z
	foo
	list $x $y $z
    }
} -body {
    proc foo {} {
	set x 2
	set y 2
	uplevel 1 {
	    set x 3
	    set y 3
	    set z 3
	}
    }
    foo
    moo
} -cleanup {
    rename foo {}
    rename moo {}
} -result {3 3 3}

# cleanup
::tcltest::cleanupTests
return

# Local Variables:
# mode: tcl
# fill-column: 78
# End: