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# Commands covered:  history
#
# 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 © 1991-1993 The Regents of the University of California.
# Copyright © 1994 Sun Microsystems, Inc.
# Copyright © 1998-1999 Scriptics Corporation.
#
# 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::*
}

# The history command might be autoloaded...
if {[catch {history}]} {
    testConstraint history 0
} else {
    testConstraint history 1
}

if {[testConstraint history]} {
    set num [history nextid]
    history keep 3
    history add {set a 12345}
    history add {set b [format {A test %s} string]}
    history add {Another test}
} else {
    # Dummy value, must be numeric
    set num 0
}

# "history event"

test history-1.1 {event option} history {history event -1} \
	{set b [format {A test %s} string]}
test history-1.2 {event option} history {history event $num} \
	{set a 12345}
test history-1.3 {event option} history {history event [expr {$num+2}]} \
	{Another test}
test history-1.4 {event option} history {history event set} \
	{set b [format {A test %s} string]}
test history-1.5 {event option} history {history e "* a*"} \
	{set a 12345}
test history-1.6 {event option} history {catch {history event *gorp} msg} 1
test history-1.7 {event option} history {
    catch {history event *gorp} msg
    set msg
} {no event matches "*gorp"}
test history-1.8 {event option} history {history event} \
	{set b [format {A test %s} string]}
test history-1.9 {event option} history {catch {history event 123 456} msg} 1
test history-1.10 {event option} history {
    catch {history event 123 456} msg
    set msg
} {wrong # args: should be "history event ?event?"}

# "history redo"

if {[testConstraint history]} {
    set a 0
    history redo -2
}
test history-2.1 {redo option} history {set a} 12345
if {[testConstraint history]} {
    set b 0
    history redo
}
test history-2.2 {redo option} history {set b} {A test string}
test history-2.3 {redo option} history {catch {history redo -3 -4}} 1
test history-2.4 {redo option} history {
    catch {history redo -3 -4} msg
    set msg
} {wrong # args: should be "history redo ?event?"}

# "history add"

if {[testConstraint history]} {
    history add "set a 444" exec
}
test history-3.1 {add option} history {set a} 444
test history-3.2 {add option} history {catch {history add "set a 444" execGorp}} 1
test history-3.3 {add option} history {
    catch {history add "set a 444" execGorp} msg
    set msg
} {bad argument "execGorp": should be "exec"}
test history-3.4 {add option} history {catch {history add "set a 444" a} msg} 1
test history-3.5 {add option} history {
    catch {history add "set a 444" a} msg
    set msg
} {bad argument "a": should be "exec"}
if {[testConstraint history]} {
    history add "set a 555" e
}
test history-3.6 {add option} history {set a} 555
if {[testConstraint history]} {
    history add "set a 666"
}
test history-3.7 {add option} history {set a} 555
test history-3.8 {add option} history {catch {history add "set a 666" e f} msg} 1
test history-3.9 {add option} history {
    catch {history add "set a 666" e f} msg
    set msg
} {wrong # args: should be "history add event ?exec?"}

# "history change"

if {[testConstraint history]} {
    history change "A test value"
}
test history-4.1 {change option} history {history event [expr {[history n]-1}]} \
	"A test value"
if {[testConstraint history]} {
    history ch "Another test" -1
}
test history-4.2 {change option} history {history e} "Another test"
test history-4.3 {change option} history {history event [expr {[history n]-1}]} \
	"A test value"
test history-4.4 {change option} history {catch {history change Foo 4 10}} 1
test history-4.5 {change option} history {
    catch {history change Foo 4 10} msg
    set msg
} {wrong # args: should be "history change newValue ?event?"}
test history-4.6 {change option} history {
    catch {history change Foo [expr {[history n]-4}]}
} 1
if {[testConstraint history]} {
    set num [expr {[history n]-4}]
}
test history-4.7 {change option} history {
    catch {history change Foo $num} msg
    set msg
} "event \"$num\" is too far in the past"

# "history info"

if {[testConstraint history]} {
    set num [history n]
    history add set\ a\ {b\nc\ d\ e}
    history add {set b 1234}
    history add set\ c\ {a\nb\nc}
}
test history-5.1 {info option} history {history info} [format {%6d  set a {b
	c d e}
%6d  set b 1234
%6d  set c {a
	b
	c}} $num [expr {$num+1}] [expr {$num+2}]]
test history-5.2 {info option} history {history i 2} [format {%6d  set b 1234
%6d  set c {a
	b
	c}} [expr {$num+1}] [expr {$num+2}]]
test history-5.3 {info option} history {catch {history i 2 3}} 1
test history-5.4 {info option} history {
    catch {history i 2 3} msg
    set msg
} {wrong # args: should be "history info ?count?"}
test history-5.5 {info option} history {history} [format {%6d  set a {b
	c d e}
%6d  set b 1234
%6d  set c {a
	b
	c}} $num [expr {$num+1}] [expr {$num+2}]]

# "history keep"

if {[testConstraint history]} {
    history add "foo1"
    history add "foo2"
    history add "foo3"
    history keep 2
}
test history-6.1 {keep option} history {
    history event [expr {[history n]-1}]
} foo3
test history-6.2 {keep option} history {history event -1} foo2
test history-6.3 {keep option} history {catch {history event -3}} 1
test history-6.4 {keep option} history {
    catch {history event -3} msg
    set msg
} {event "-3" is too far in the past}
if {[testConstraint history]} {
    history k 5
}
test history-6.5 {keep option} history {history event -1} foo2
test history-6.6 {keep option} history {history event -2} {}
test history-6.7 {keep option} history {history event -3} {}
test history-6.8 {keep option} history {history event -4} {}
test history-6.9 {keep option} history {catch {history event -5}} 1
test history-6.10 {keep option} history {catch {history keep 4 6}} 1
test history-6.11 {keep option} history {
    catch {history keep 4 6} msg
    set msg
} {wrong # args: should be "history keep ?count?"}
test history-6.12 {keep option} history {catch {history keep}} 0
test history-6.13 {keep option} history {
    history keep
} {5}
test history-6.14 {keep option} history {catch {history keep -3}} 1
test history-6.15 {keep option} history {
    catch {history keep -3} msg
    set msg
} {illegal keep count "-3"}
test history-6.16 {keep option} history {
    catch {history keep butter} msg
    set msg
} {illegal keep count "butter"}

# "history nextid"

if {[testConstraint history]} {
    set num [history n]
    history add "Testing"
    history add "Testing2"
}
test history-7.1 {nextid option} history {history event} "Testing"
test history-7.2 {nextid option} history {history next} [expr {$num+2}]
test history-7.3 {nextid option} history {catch {history nextid garbage}} 1
test history-7.4 {nextid option} history {
    catch {history nextid garbage} msg
    set msg
} {wrong # args: should be "history nextid"}

# "history clear"

if {[testConstraint history]} {
    set num [history n]
    history add "Testing"
    history add "Testing2"
}
test history-8.1 {clear option} history {catch {history clear junk}} 1
test history-8.2 {clear option} history {history clear} {}
if {[testConstraint history]} {
    history clear
    history add "Testing"
}
test history-8.3 {clear option} history {history} {     1  Testing}

# miscellaneous

test history-9.1 {miscellaneous} history {catch {history gorp} msg} 1
test history-9.2 {miscellaneous} history {
    catch {history gorp} msg
    set msg
} {unknown or ambiguous subcommand "gorp": must be add, change, clear, event, info, keep, nextid, or redo}

# History retains references; Bug 1ae12987cb
test history-10.1 {references kept by history} -constraints history -setup {
    interp create histtest
    histtest eval {
	# Trigger any autoloading that might be present
	catch {history}
	proc refcount {x} {
	    set rep [::tcl::unsupported::representation $x]
	    regexp {with a refcount of (\d+)} $rep -> rc
	    # Ignore the references due to calling this procedure
	    return [expr {$rc - 3}]
	}
    }
} -body {
    histtest eval {
	# A fresh object, refcount 1 from the variable we write it to
	set obj [expr {rand()}]
	set baseline [refcount $obj]
	lappend result [refcount $obj]
	history add [list list $obj]
	lappend result [refcount $obj]
	history clear
	lappend result [refcount $obj]
    }
} -cleanup {
    interp delete histtest
} -result {1 2 1}
test history-10.2 {references kept by history} -constraints history -setup {
    interp create histtest
    histtest eval {
	# Trigger any autoloading that might be present
	catch {history}
	proc refcount {x} {
	    set rep [::tcl::unsupported::representation $x]
	    regexp {with a refcount of (\d+)} $rep -> rc
	    # Ignore the references due to calling this procedure
	    return [expr {$rc - 3}]
	}
    }
} -body {
    histtest eval {
	# A fresh object, refcount 1 from the variable we write it to
	set obj [expr {rand()}]
	set baseline [refcount $obj]
	lappend result [refcount $obj]
	history add [list list $obj]
	lappend result [refcount $obj]
	rename history {}
	lappend result [refcount $obj]
    }
} -cleanup {
    interp delete histtest
} -result {1 2 1}

# cleanup
::tcltest::cleanupTests
return

# Local Variables:
# mode: tcl
# End: