# Commands covered:  rename

#

# 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.

#

# RCS: @(#) $Id: rename.test,v 1.10 2001/09/12 20:28:50 dgp Exp $

if {[lsearch [namespace children] ::tcltest] == -1} {

    package require tcltest

    namespace import -force ::tcltest::*

}

# Must eliminate the "unknown" command while the test is running,

# especially if the test is being run in a program with its

# own special-purpose unknown command.

catch {rename unknown unknown.old}

catch {rename r2 {}}

proc r1 {} {return "procedure r1"}

rename r1 r2

test rename-1.1 {simple renaming} {

    r2

} {procedure r1}

test rename-1.2 {simple renaming} {

    list [catch r1 msg] $msg

} {1 {invalid command name "r1"}}

rename r2 {}

test rename-1.3 {simple renaming} {

    list [catch r2 msg] $msg

} {1 {invalid command name "r2"}}

# The test below is tricky because it renames a built-in command.

# It's possible that the test procedure uses this command, so must

# restore the command before calling test again.

rename list l.new

set a [catch list msg1]

set b [l.new a b c]

rename l.new list

set c [catch l.new msg2]

set d [list 111 222]

test rename-2.1 {renaming built-in command} {

    list $a $msg1 $b $c $msg2 $d

} {1 {invalid command name "list"} {a b c} 1 {invalid command name "l.new"} {111 222}}

test rename-3.1 {error conditions} {

    list [catch {rename r1} msg] $msg $errorCode

} {1 {wrong # args: should be "rename oldName newName"} NONE}

test rename-3.2 {error conditions} {

    list [catch {rename r1 r2 r3} msg] $msg $errorCode

} {1 {wrong # args: should be "rename oldName newName"} NONE}

test rename-3.3 {error conditions} {

    proc r1 {} {}

    proc r2 {} {}

    list [catch {rename r1 r2} msg] $msg

} {1 {can't rename to "r2": command already exists}}

test rename-3.4 {error conditions} {

    catch {rename r1 {}}

    catch {rename r2 {}}

    list [catch {rename r1 r2} msg] $msg

} {1 {can't rename "r1": command doesn't exist}}

test rename-3.5 {error conditions} {

    catch {rename _non_existent_command {}}

    list [catch {rename _non_existent_command {}} msg] $msg

} {1 {can't delete "_non_existent_command": command doesn't exist}}

catch {rename unknown {}}

catch {rename unknown.old unknown}

catch {rename bar {}}

if {[info command testdel] == "testdel"} {

    test rename-4.1 {reentrancy issues with command deletion and renaming} {

	set x {}

	testdel {} foo {lappend x deleted; rename bar {}; lappend x [info command bar]}

	rename foo bar

	lappend x |

	rename bar {}

	set x

    } {| deleted {}}

    test rename-4.2 {reentrancy issues with command deletion and renaming} {

	set x {}

	testdel {} foo {lappend x deleted; rename foo bar}

	rename foo {}

	set x

    } {deleted}

    test rename-4.3 {reentrancy issues with command deletion and renaming} {

	set x {}

	testdel {} foo {lappend x deleted; testdel {} foo {lappend x deleted2}}

	rename foo {}

	lappend x |

	rename foo {}

	set x

    } {deleted | deleted2}

    test rename-4.4 {reentrancy issues with command deletion and renaming} {

	set x {}

	testdel {} foo {lappend x deleted; rename foo bar}

	rename foo {}

	lappend x | [info command bar]

    } {deleted | {}}

    test rename-4.5 {reentrancy issues with command deletion and renaming} {

	set env(value) before

	interp create foo

	testdel foo cmd {set env(value) deleted}

	interp delete foo

	set env(value)

    } {deleted}

    test rename-4.6 {reentrancy issues with command deletion and renaming} {

	proc kill args {

	    interp delete foo

	}

	set env(value) before

	interp create foo

	foo alias kill kill

	testdel foo cmd {set env(value) deleted; kill}

	list [catch {foo eval {rename cmd {}}} msg] $msg $env(value)

    } {0 {} deleted}

    test rename-4.7 {reentrancy issues with command deletion and renaming} {

	proc kill args {

	    interp delete foo

	}

	set env(value) before

	interp create foo

	foo alias kill kill

	testdel foo cmd {set env(value) deleted; kill}

	list [catch {interp delete foo} msg] $msg $env(value)

    } {0 {} deleted}

    if {[info exists env(value)]} {

	unset env(value)

    }

}

# Save the unknown procedure which is modified by the following test.

catch {rename unknown unknown.old}

test rename-5.1 {repeated rename deletion and redefinition of same command} {

    set SAVED_UNKNOWN "proc unknown "

    append SAVED_UNKNOWN "\{[info args unknown.old]\} "

    append SAVED_UNKNOWN "\{[info body unknown.old]\}"

    for {set i 0} {$i < 10} {incr i} {

        eval $SAVED_UNKNOWN

        tcl_wordBreakBefore "" 0

        rename tcl_wordBreakBefore {}

        rename unknown {}

    }

} {}

catch {rename unknown {}}

catch {rename unknown.old unknown}

test rename-6.1 {old code invalidated (epoch incremented) when cmd with compile proc is renamed } {

    proc x {} {

        set a 123

        set b [incr a]

    }

    x

    rename incr incr.old

    proc incr {} {puts "new incr called!"}

    catch {x} msg

    set msg

} {wrong # args: should be "incr"}

if {[info commands incr.old] != {}} {

    catch {rename incr {}}

    catch {rename incr.old incr}

}

::tcltest::cleanupTests

return