path: root/tests/textBTree.test

# This file is a Tcl script to test out the B-tree facilities of
# Tk's text widget (the contents of the file "tkTextBTree.c".  There are
# several file with additional tests for other features of text widgets.
# This file is organized in the standard fashion for Tcl tests.
#
# Copyright (c) 1992-1994 The Regents of the University of California.
# Copyright (c) 1994 Sun Microsystems, Inc.
# Copyright (c) 1998-1999 by Scriptics Corporation.
# All rights reserved.
#
# RCS: @(#) $Id: textBTree.test,v 1.6 2003/04/01 21:06:53 dgp Exp $

package require tcltest 2.1
eval tcltest::configure $argv
tcltest::loadTestedCommands

catch {destroy .t}
text .t
.t debug on

test btree-1.1 {basic insertions} {
    .t delete 1.0 100000.0
    .t insert 1.0 "Line 1\nLine 2\nLine 3"
    .t get 1.0 1000000.0
} "Line 1\nLine 2\nLine 3\n"
test btree-1.2 {basic insertions} {
    .t delete 1.0 100000.0
    .t insert 1.0 "Line 1\nLine 2\nLine 3"
    .t insert 1.3 XXX
    .t get 1.0 1000000.0
} "LinXXXe 1\nLine 2\nLine 3\n"
test btree-1.3 {basic insertions} {
    .t delete 1.0 100000.0
    .t insert 1.0 "Line 1\nLine 2\nLine 3"
    .t insert 3.0 YYY
    .t get 1.0 1000000.0
} "Line 1\nLine 2\nYYYLine 3\n"
test btree-1.4 {basic insertions} {
    .t delete 1.0 100000.0
    .t insert 1.0 "Line 1\nLine 2\nLine 3"
    .t insert 2.1 X\nYY
    .t get 1.0 1000000.0
} "Line 1\nLX\nYYine 2\nLine 3\n"
test btree-1.5 {basic insertions} {
    .t delete 1.0 100000.0
    .t insert 1.0 "Line 1\nLine 2\nLine 3"
    .t insert 2.0 X\n\n\n
    .t get 1.0 1000000.0
} "Line 1\nX\n\n\nLine 2\nLine 3\n"
test btree-1.6 {basic insertions} {
    .t delete 1.0 100000.0
    .t insert 1.0 "Line 1\nLine 2\nLine 3"
    .t insert 2.6 X\n
    .t get 1.0 1000000.0
} "Line 1\nLine 2X\n\nLine 3\n"
test btree-1.7 {insertion before start of text} {
    .t delete 1.0 100000.0
    .t insert 1.0 "Line 1\nLine 2\nLine 3"
    .t insert 0.4 XXX
    .t get 1.0 1000000.0
} "XXXLine 1\nLine 2\nLine 3\n"
test btree-1.8 {insertion past end of text} {
    .t delete 1.0 100000.0
    .t insert 1.0 "Line 1\nLine 2\nLine 3"
    .t insert 100.0 ZZ
    .t get 1.0 1000000.0
} "Line 1\nLine 2\nLine 3ZZ\n"
test btree-1.9 {insertion before start of line} {
    .t delete 1.0 100000.0
    .t insert 1.0 "Line 1\nLine 2\nLine 3"
    .t insert 2.-3 Q
    .t get 1.0 1000000.0
} "Line 1\nQLine 2\nLine 3\n"
test btree-1.10 {insertion past end of line} {
    .t delete 1.0 100000.0
    .t insert 1.0 "Line 1\nLine 2\nLine 3"
    .t insert 2.40 XYZZY
    .t get 1.0 1000000.0
} "Line 1\nLine 2XYZZY\nLine 3\n"
test btree-1.11 {insertion past end of last line} {
    .t delete 1.0 100000.0
    .t insert 1.0 "Line 1\nLine 2\nLine 3"
    .t insert 3.40 ABC
    .t get 1.0 1000000.0
} "Line 1\nLine 2\nLine 3ABC\n"

test btree-2.1 {basic deletions} {
    .t delete 1.0 100000.0
    .t insert 1.0 "Line 1\nLine 2\nLine 3"
    .t delete 1.0 1.3
    .t get 1.0 1000000.0
} "e 1\nLine 2\nLine 3\n"
test btree-2.2 {basic deletions} {
    .t delete 1.0 100000.0
    .t insert 1.0 "Line 1\nLine 2\nLine 3"
    .t delete 2.2
    .t get 1.0 1000000.0
} "Line 1\nLie 2\nLine 3\n"
test btree-2.3 {basic deletions} {
    .t delete 1.0 100000.0
    .t insert 1.0 "Line 1\nLine 2\nLine 3"
    .t delete 2.0 2.3
    .t get 1.0 1000000.0
} "Line 1\ne 2\nLine 3\n"
test btree-2.4 {deleting whole lines} {
    .t delete 1.0 100000.0
    .t insert 1.0 "Line 1\nLine 2\nLine 3"
    .t delete 1.2 3.0
    .t get 1.0 1000000.0
} "LiLine 3\n"
test btree-2.5 {deleting whole lines} {
    .t delete 1.0 100000.0
    .t insert 1.0 "Line 1\nLine 2\n\n\nLine 5"
    .t delete 1.0 5.2
    .t get 1.0 1000000.0
} "ne 5\n"
test btree-2.6 {deleting before start of file} {
    .t delete 1.0 100000.0
    .t insert 1.0 "Line 1\nLine 2\nLine 3"
    .t delete 0.3 1.2
    .t get 1.0 1000000.0
} "ne 1\nLine 2\nLine 3\n"
test btree-2.7 {deleting after end of file} {
    .t delete 1.0 100000.0
    .t insert 1.0 "Line 1\nLine 2\nLine 3"
    .t delete 10.3
    .t get 1.0 1000000.0
} "Line 1\nLine 2\nLine 3\n"
test btree-2.8 {deleting before start of line} {
    .t delete 1.0 100000.0
    .t insert 1.0 "Line 1\nLine 2\nLine 3"
    .t delete 3.-1 3.3
    .t get 1.0 1000000.0
} "Line 1\nLine 2\ne 3\n"
test btree-2.9 {deleting before start of line} {
    .t delete 1.0 100000.0
    .t insert 1.0 "Line 1\nLine 2\nLine 3"
    .t delete 1.-1 1.0
    .t get 1.0 1000000.0
} "Line 1\nLine 2\nLine 3\n"
test btree-2.10 {deleting after end of line} {
    .t delete 1.0 100000.0
    .t insert 1.0 "Line 1\nLine 2\nLine 3"
    .t delete 1.8 2.1
    .t get 1.0 1000000.0
} "Line 1ine 2\nLine 3\n"
test btree-2.11 {deleting after end of last line} {
    .t delete 1.0 100000.0
    .t insert 1.0 "Line 1\nLine 2\nLine 3"
    .t delete 3.8 4.1
    .t get 1.0 1000000.0
} "Line 1\nLine 2\nLine 3\n"
test btree-2.12 {deleting before start of file} {
    .t delete 1.0 100000.0
    .t insert 1.0 "Line 1\nLine 2\nLine 3"
    .t delete 1.8 0.0
    .t get 1.0 1000000.0
} "Line 1\nLine 2\nLine 3\n"
test btree-2.13 {deleting past end of file} {
    .t delete 1.0 100000.0
    .t insert 1.0 "Line 1\nLine 2\nLine 3"
    .t delete 1.8 4.0
    .t get 1.0 1000000.0
} "Line 1\n"
test btree-2.14 {deleting with end before start of line} {
    .t delete 1.0 100000.0
    .t insert 1.0 "Line 1\nLine 2\nLine 3"
    .t delete 1.3 2.-3
    .t get 1.0 1000000.0
} "LinLine 2\nLine 3\n"
test btree-2.15 {deleting past end of line} {
    .t delete 1.0 100000.0
    .t insert 1.0 "Line 1\nLine 2\nLine 3"
    .t delete 1.3 1.9
    .t get 1.0 1000000.0
} "Lin\nLine 2\nLine 3\n"
test btree-2.16 {deleting past end of line} {
    .t delete 1.0 100000.0
    .t insert 1.0 "Line 1\nLine 2\nLine 3"
    .t delete 3.2 3.15
    .t get 1.0 1000000.0
} "Line 1\nLine 2\nLi\n"
test btree-2.17 {deleting past end of line} {
    .t delete 1.0 100000.0
    .t insert 1.0 "Line 1\nLine 2\nLine 3"
    .t delete 3.0 3.15
    .t get 1.0 1000000.0
} "Line 1\nLine 2\n\n"
test btree-2.18 {deleting past end of line} {
    .t delete 1.0 100000.0
    .t insert 1.0 "Line 1\nLine 2\nLine 3"
    .t delete 1.0 3.15
    .t get 1.0 1000000.0
} "\n"
test btree-2.19 {deleting with negative range} {
    .t delete 1.0 100000.0
    .t insert 1.0 "Line 1\nLine 2\nLine 3"
    .t delete 3.2 2.4
    .t get 1.0 1000000.0
} "Line 1\nLine 2\nLine 3\n"
test btree-2.20 {deleting with negative range} {
    .t delete 1.0 100000.0
    .t insert 1.0 "Line 1\nLine 2\nLine 3"
    .t delete 3.2 3.1
    .t get 1.0 1000000.0
} "Line 1\nLine 2\nLine 3\n"
test btree-2.21 {deleting with negative range} {
    .t delete 1.0 100000.0
    .t insert 1.0 "Line 1\nLine 2\nLine 3"
    .t delete 3.2 3.2
    .t get 1.0 1000000.0
} "Line 1\nLine 2\nLine 3\n"

proc setup {} {
    .t delete 1.0 100000.0
    .t tag delete x y
    .t insert 1.0 "Text for first line\nSecond line\n\nLast line of info"
    .t tag add x 1.1
    .t tag add x 1.5 1.13
    .t tag add x 2.2 2.6
    .t tag add y 1.5
}

test btree-3.1 {inserting with tags} {
    setup
    .t insert 1.0 XXX
    list [.t tag ranges x] [.t tag ranges y]
} {{1.4 1.5 1.8 1.16 2.2 2.6} {1.8 1.9}}
test btree-3.2 {inserting with tags} {
    setup
    .t insert 1.15 YYY
    list [.t tag ranges x] [.t tag ranges y]
} {{1.1 1.2 1.5 1.13 2.2 2.6} {1.5 1.6}}
test btree-3.3 {inserting with tags} {
    setup
    .t insert 1.7 ZZZZ
    list [.t tag ranges x] [.t tag ranges y]
} {{1.1 1.2 1.5 1.17 2.2 2.6} {1.5 1.6}}
test btree-3.4 {inserting with tags} {
    setup
    .t insert 1.7 \n\n
    list [.t tag ranges x] [.t tag ranges y]
} {{1.1 1.2 1.5 3.6 4.2 4.6} {1.5 1.6}}
test btree-3.5 {inserting with tags} {
    setup
    .t insert 1.5 A\n
    list [.t tag ranges x] [.t tag ranges y]
} {{1.1 1.2 2.0 2.8 3.2 3.6} {2.0 2.1}}
test btree-3.6 {inserting with tags} {
    setup
    .t insert 1.13 A\n
    list [.t tag ranges x] [.t tag ranges y]
} {{1.1 1.2 1.5 1.13 3.2 3.6} {1.5 1.6}}

test btree-4.1 {deleting with tags} {
    setup
    .t delete 1.6 1.9
    list [.t tag ranges x] [.t tag ranges y]
} {{1.1 1.2 1.5 1.10 2.2 2.6} {1.5 1.6}}
test btree-4.2 {deleting with tags} {
    setup
    .t delete 1.1 2.3
    list [.t tag ranges x] [.t tag ranges y]
} {{1.1 1.4} {}}
test btree-4.3 {deleting with tags} {
    setup
    .t delete 1.4 2.1
    list [.t tag ranges x] [.t tag ranges y]
} {{1.1 1.2 1.5 1.9} {}}
test btree-4.4 {deleting with tags} {
    setup
    .t delete 1.14 2.1
    list [.t tag ranges x] [.t tag ranges y]
} {{1.1 1.2 1.5 1.13 1.15 1.19} {1.5 1.6}}
test btree-4.5 {deleting with tags} {
    setup
    .t delete 1.0 2.10
    list [.t tag ranges x] [.t tag ranges y]
} {{} {}}
test btree-4.6 {deleting with tags} {
    setup
    .t delete 1.0 1.5
    list [.t tag ranges x] [.t tag ranges y]
} {{1.0 1.8 2.2 2.6} {1.0 1.1}}
test btree-4.7 {deleting with tags} {
    setup
    .t delete 1.6 1.9
    list [.t tag ranges x] [.t tag ranges y]
} {{1.1 1.2 1.5 1.10 2.2 2.6} {1.5 1.6}}
test btree-4.8 {deleting with tags} {
    setup
    .t delete 1.5 1.13
    list [.t tag ranges x] [.t tag ranges y]
} {{1.1 1.2 2.2 2.6} {}}

set bigText1 {}
for {set i 0} {$i < 10} {incr i} {
    append bigText1 "Line $i\n"
}
set bigText2 {}
for {set i 0} {$i < 200} {incr i} {
    append bigText2 "Line $i\n"
}
test btree-5.1 {very large inserts, with tags} {
    setup
    .t insert 1.0 $bigText1
    list [.t tag ranges x] [.t tag ranges y]
} {{11.1 11.2 11.5 11.13 12.2 12.6} {11.5 11.6}}
test btree-5.2 {very large inserts, with tags} {
    setup
    .t insert 1.2 $bigText2
    list [.t tag ranges x] [.t tag ranges y]
} {{1.1 1.2 201.3 201.11 202.2 202.6} {201.3 201.4}}
test btree-5.3 {very large inserts, with tags} {
    setup
    for {set i 0} {$i < 200} {incr i} {
	.t insert 1.8 "longer line $i\n"
    }
    list [.t tag ranges x] [.t tag ranges y] [.t get 1.0 1.100] [.t get 198.0 198.100]
} {{1.1 1.2 1.5 201.5 202.2 202.6} {1.5 1.6} {Text forlonger line 199} {longer line 2}}

test btree-6.1 {very large deletes, with tags} {
    setup
    .t insert 1.1 $bigText2
    .t delete 1.2 201.2
    list [.t tag ranges x] [.t tag ranges y]
} {{1.4 1.12 2.2 2.6} {1.4 1.5}}
test btree-6.2 {very large deletes, with tags} {
    setup
    .t insert 1.1 $bigText2
    for {set i 0} {$i < 200} {incr i} {
	.t delete 1.2 2.2
    }
    list [.t tag ranges x] [.t tag ranges y]
} {{1.4 1.12 2.2 2.6} {1.4 1.5}}
test btree-6.3 {very large deletes, with tags} {
    setup
    .t insert 1.1 $bigText2
    .t delete 2.3 10000.0
    .t get 1.0 1000.0
} {TLine 0
Lin
}
test btree-6.4 {very large deletes, with tags} {
    setup
    .t insert 1.1 $bigText2
    for {set i 0} {$i < 100} {incr i} {
	.t delete 30.0 31.0
    }
    list [.t tag ranges x] [.t tag ranges y]
} {{101.0 101.1 101.4 101.12 102.2 102.6} {101.4 101.5}}
test btree-6.5 {very large deletes, with tags} {
    setup
    .t insert 1.1 $bigText2
    for {set i 0} {$i < 100} {incr i} {
	set j [expr $i+2]
	set k [expr 1+2*$i]
	.t tag add x $j.1 $j.3
	.t tag add y $k.1 $k.6
    }
    .t delete 2.0 200.0
    list [.t tag ranges x] [.t tag ranges y]
} {{3.0 3.1 3.4 3.12 4.2 4.6} {1.1 1.6 3.4 3.5}}
test btree-6.6 {very large deletes, with tags} {
    setup
    .t insert 1.1 $bigText2
    for {set i 0} {$i < 100} {incr i} {
	set j [expr $i+2]
	set k [expr 1+2*$i]
	.t tag add x $j.1 $j.3
	.t tag add y $k.1 $k.6
    }
    for {set i 199} {$i >= 2} {incr i -1} {
	.t delete $i.0 [expr $i+1].0
    }
    list [.t tag ranges x] [.t tag ranges y]
} {{3.0 3.1 3.4 3.12 4.2 4.6} {1.1 1.6 3.4 3.5}}

.t delete 1.0 end
.t insert 1.0 "Text for first line\nSecond line\n\nLast line of info"
set i 1
foreach check {
    {1.3 1.6 1.7 2.0 {1.3 1.6 1.7 2.0}}
    {1.3 1.6 1.6 2.0 {1.3 2.0}}
    {1.3 1.6 1.4 2.0 {1.3 2.0}}
    {2.0 4.3 1.4 1.10 {1.4 1.10 2.0 4.3}}
    {2.0 4.3 1.4 1.end {1.4 1.19 2.0 4.3}}
    {2.0 4.3 1.4 2.0 {1.4 4.3}}
    {2.0 4.3 1.4 3.0 {1.4 4.3}}
    {1.2 1.3 1.6 1.7 1.end 2.0 2.4 2.7 3.0 4.0 1.1 4.2 {1.1 4.2}}
    {1.2 1.3 1.6 1.7 1.end 2.0 2.4 2.7 3.0 4.0 1.3 4.2 {1.2 4.2}}
    {1.2 1.3 1.6 1.7 1.end 2.0 2.4 2.7 3.0 4.0 1.1 3.0 {1.1 4.0}}
    {1.2 1.3 1.6 1.7 1.end 2.0 2.4 2.7 3.0 4.0 1.2 3.0 {1.2 4.0}}
} {
    test btree-7.$i {tag addition and removal} {
	.t tag remove x 1.0 end
	while {[llength $check] > 2} {
	    .t tag add x [lindex $check 0] [lindex $check 1]
	    set check [lrange $check 2 end]
	}
	.t tag ranges x
    } [lindex $check [expr [llength $check]-1]]
    incr i
}

test btree-8.1 {tag addition and removal, weird ranges} {
    .t delete 1.0 100000.0
    .t tag delete x
    .t insert 1.0 "Text for first line\nSecond line\n\nLast line of info"
    .t tag add x 0.0 1.3
    .t tag ranges x
} {1.0 1.3}
test btree-8.2 {tag addition and removal, weird ranges} {
    .t delete 1.0 100000.0
    .t tag delete x
    .t insert 1.0 "Text for first line\nSecond line\n\nLast line of info"
    .t tag add x 1.40 2.4
    .t tag ranges x
} {1.19 2.4}
test btree-8.3 {tag addition and removal, weird ranges} {
    .t delete 1.0 100000.0
    .t tag delete x
    .t insert 1.0 "Text for first line\nSecond line\n\nLast line of info"
    .t tag add x 4.40 4.41
    .t tag ranges x
} {}
test btree-8.4 {tag addition and removal, weird ranges} {
    .t delete 1.0 100000.0
    .t tag delete x
    .t insert 1.0 "Text for first line\nSecond line\n\nLast line of info"
    .t tag add x 5.1 5.2
    .t tag ranges x
} {}
test btree-8.5 {tag addition and removal, weird ranges} {
    .t delete 1.0 100000.0
    .t tag delete x
    .t insert 1.0 "Text for first line\nSecond line\n\nLast line of info"
    .t tag add x 1.1 9.0
    .t tag ranges x
} {1.1 5.0}
test btree-8.6 {tag addition and removal, weird ranges} {
    .t delete 1.0 100000.0
    .t tag delete x
    .t insert 1.0 "Text for first line\nSecond line\n\nLast line of info"
    .t tag add x 1.1 1.90
    .t tag ranges x
} {1.1 1.19}
test btree-8.7 {tag addition and removal, weird ranges} {
    .t delete 1.0 100000.0
    .t tag delete x
    .t insert 1.0 "Text for first line\nSecond line\n\nLast line of info"
    .t tag add x 1.1 4.90
    .t tag ranges x
} {1.1 4.17}
test btree-8.8 {tag addition and removal, weird ranges} {
    .t delete 1.0 100000.0
    .t tag delete x
    .t insert 1.0 "Text for first line\nSecond line\n\nLast line of info"
    .t tag add x 3.0 3.0
    .t tag ranges x
} {}

test btree-9.1 {tag names} {
    setup
    .t tag names
} {sel x y}
test btree-9.2 {tag names} {
    setup
    .t tag add tag1 1.8
    .t tag add tag2 1.8
    .t tag add tag3 1.7 1.9
    .t tag names 1.8
} {x tag1 tag2 tag3}
test btree-9.3 {lots of tag names} {
    setup
    .t insert 1.2 $bigText2
    foreach i {tag1 foo ThisOne {x space} q r s t} {
	.t tag add $i 150.2
    }
    foreach i {u tagA tagB tagC and more {$} \{} {
	.t tag add $i 150.1 150.3
    }
    .t tag names 150.2
} {tag1 foo ThisOne {x space} q r s t u tagA tagB tagC and more {$} \{}
test btree-9.4 {lots of tag names} {
    setup
    .t insert 1.2 $bigText2
    .t tag delete tag1 foo ThisOne more {x space} q r s t u
    .t tag delete tagA tagB tagC and {$} \{ more
    foreach i {tag1 foo ThisOne more {x space} q r s t} {
	.t tag add $i 150.2
    }
    foreach i {foo ThisOne u tagA tagB tagC and more {$} \{} {
	.t tag add $i 150.4
    }
    .t tag delete tag1 more q r tagA
    .t tag names 150.2
} {foo ThisOne {x space} s t}

proc msetup {} {
    .t delete 1.0 100000.0
    .t insert 1.0 "Text for first line\nSecond line\n\nLast line of info"
    .t mark set m1 1.2
    .t mark set l1 1.2
    .t mark gravity l1 left
    .t mark set next 1.6
    .t mark set x 1.6
    .t mark set m2 2.0
    .t mark set m3 2.100
    .t tag add x 1.3 1.8
}
test btree-10.1 {basic mark facilities} {
    msetup
    list [lsort [.t mark names]] [.t index m1] [.t index m2] [.t index m3]
} {{current insert l1 m1 m2 m3 next x} 1.2 2.0 2.11}
test btree-10.2 {basic mark facilities} {
    msetup
    .t mark unset m2
    lsort [.t mark names]
} {current insert l1 m1 m3 next x}
test btree-10.3 {basic mark facilities} {
    msetup
    .t mark set m2 1.8
    list [lsort [.t mark names]] [.t index m1] [.t index m2] [.t index m3]
} {{current insert l1 m1 m2 m3 next x} 1.2 1.8 2.11}

test btree-11.1 {marks and inserts} {
    msetup
    .t insert 1.1 abcde
    list [.t index l1] [.t index m1] [.t index next] [.t index x] [.t index m2] [.t index m3]
} {1.7 1.7 1.11 1.11 2.0 2.11}
test btree-11.2 {marks and inserts} {
    msetup
    .t insert 1.2 abcde
    list [.t index l1] [.t index m1] [.t index next] [.t index x] [.t index m2] [.t index m3]
} {1.2 1.7 1.11 1.11 2.0 2.11}
test btree-11.3 {marks and inserts} {
    msetup
    .t insert 1.3 abcde
    list [.t index l1] [.t index m1] [.t index next] [.t index x] [.t index m2] [.t index m3]
} {1.2 1.2 1.11 1.11 2.0 2.11}
test btree-11.4 {marks and inserts} {
    msetup
    .t insert 1.1 ab\n\ncde
    list [.t index l1] [.t index m1] [.t index next] [.t index x] [.t index m2] [.t index m3]
} {3.4 3.4 3.8 3.8 4.0 4.11}
test btree-11.5 {marks and inserts} {
    msetup
    .t insert 1.4 ab\n\ncde
    list [.t index l1] [.t index m1] [.t index next] [.t index x] [.t index m2] [.t index m3]
} {1.2 1.2 3.5 3.5 4.0 4.11}
test btree-11.6 {marks and inserts} {
    msetup
    .t insert 1.7 ab\n\ncde
    list [.t index l1] [.t index m1] [.t index next] [.t index x] [.t index m2] [.t index m3]
} {1.2 1.2 1.6 1.6 4.0 4.11}

test btree-12.1 {marks and deletes} {
    msetup
    .t delete 1.3 1.5
    list [.t index l1] [.t index m1] [.t index next] [.t index x] [.t index m2] [.t index m3]
} {1.2 1.2 1.4 1.4 2.0 2.11}
test btree-12.2 {marks and deletes} {
    msetup
    .t delete 1.3 1.8
    list [.t index l1] [.t index m1] [.t index next] [.t index x] [.t index m2] [.t index m3]
} {1.2 1.2 1.3 1.3 2.0 2.11}
test btree-12.3 {marks and deletes} {
    msetup
    .t delete 1.2 1.8
    list [.t index l1] [.t index m1] [.t index next] [.t index x] [.t index m2] [.t index m3]
} {1.2 1.2 1.2 1.2 2.0 2.11}
test btree-12.4 {marks and deletes} {
    msetup
    .t delete 1.1 1.8
    list [.t index l1] [.t index m1] [.t index next] [.t index x] [.t index m2] [.t index m3]
} {1.1 1.1 1.1 1.1 2.0 2.11}
test btree-12.5 {marks and deletes} {
    msetup
    .t delete 1.5 3.1
    list [.t index l1] [.t index m1] [.t index next] [.t index x] [.t index m2] [.t index m3]
} {1.2 1.2 1.5 1.5 1.5 1.5}
test btree-12.6 {marks and deletes} {
    msetup
    .t mark set m2 4.5
    .t delete 1.5 4.1
    list [.t index l1] [.t index m1] [.t index next] [.t index x] [.t index m2] [.t index m3]
} {1.2 1.2 1.5 1.5 1.9 1.5}
test btree-12.7 {marks and deletes} {
    msetup
    .t mark set m2 4.5
    .t mark set m3 4.5
    .t mark set m1 4.7
    .t delete 1.5 4.1
    list [.t index l1] [.t index m1] [.t index next] [.t index x] [.t index m2] [.t index m3]
} {1.2 1.11 1.5 1.5 1.9 1.9}

destroy .t
text .t
test btree-13.1 {tag searching} {
    .t delete 1.0 100000.0
    .t insert 1.0 "Text for first line\nSecond line\n\nLast line of info"
    .t tag next x 2.2 2.1
} {}
test btree-13.2 {tag searching} {
    .t delete 1.0 100000.0
    .t insert 1.0 "Text for first line\nSecond line\n\nLast line of info"
    .t tag add x 2.2 2.4
    .t tag next x 2.2 2.3
} {2.2 2.4}
test btree-13.3 {tag searching} {
    .t delete 1.0 100000.0
    .t insert 1.0 "Text for first line\nSecond line\n\nLast line of info"
    .t tag add x 2.2 2.4
    .t tag next x 2.3 2.6
} {}
test btree-13.4 {tag searching} {
    .t delete 1.0 100000.0
    .t insert 1.0 "Text for first line\nSecond line\n\nLast line of info"
    .t tag add x 2.5 2.8
    .t tag next x 2.1 2.6
} {2.5 2.8}
test btree-13.5 {tag searching} {
    .t delete 1.0 100000.0
    .t insert 1.0 "Text for first line\nSecond line\n\nLast line of info"
    .t tag add x 2.5 2.8
    .t tag next x 2.1 2.5
} {}
test btree-13.6 {tag searching} {
    .t delete 1.0 100000.0
    .t insert 1.0 "Text for first line\nSecond line\n\nLast line of info"
    .t tag add x 2.1 2.4
    .t tag next x 2.5 2.8
} {}
test btree-13.7 {tag searching} {
    .t delete 1.0 100000.0
    .t insert 1.0 "Text for first line\nSecond line\n\nLast line of info"
    .t tag add x 2.5 2.8
    .t tag next x 2.1 2.4
} {}
test btree-13.8 {tag searching} {
    setup
    .t insert 1.2 $bigText2
    .t tag add x 190.3 191.2
    .t tag next x 3.5
} {190.3 191.2}

test btree-14.1 {check tag presence} {
    setup
    .t insert 1.2 $bigText2
    .t tag add x 3.5 3.7
    .t tag add y 133.9 141.5
    .t tag add z 1.5 180.2
    .t tag add q 141.4 142.3
    .t tag add x 130.2 145.1
    .t tag add a 141.0
    .t tag add b 4.3
    .t tag add b 7.5
    .t tag add b 140.3
    for {set i 120} {$i < 160} {incr i} {
	.t tag add c $i.4
    }
    foreach i {a1 a2 a3 a4 a5 a6 a7 a8 a9 10 a11 a12 a13} {
	.t tag add $i 122.2
    }
    .t tag add x 141.3
    .t tag names 141.1
} {x y z}

test btree-15.1 {rebalance with empty node} {
    catch {destroy .t}
    text .t
    .t debug 1
    .t insert end "1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23"
    .t delete 6.0 12.0
    .t get 1.0 end
} "1\n2\n3\n4\n5\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n"

proc setupBig {} {
    .t delete 1.0 end
    .t tag delete x y
    .t tag configure x -foreground blue
    .t tag configure y -underline true
    # Create a Btree with 2002 lines (2000 + already existing + phantom at end)
    # This generates a level 3 node with 9 children
    # Most level 2 nodes cover 216 lines and have 6 children, except the last
    # level 2 node covers 274 lines and has 7 children.
    # Most level 1 nodes cover 36 lines and have 6 children, except the
    # rightmost node has 58 lines and 9 children.
    # Level 2: 2002 = 8*216 + 274
    # Level 1: 2002 = 54*36 + 58
    # Level 0: 2002 = 332*6 + 10
    for {set i 0} {$i < 2000} {incr i} {
	append x "Line $i abcd efgh ijkl\n"
    }
    .t insert insert $x
    .t debug 1
}

test btree-16.1 {add tag does not push root above level 0} {
    catch {destroy .t}
    text .t
    setupBig
    .t tag add x 1.1 1.10
    .t tag add x 5.1 5.10
    .t tag ranges x
} {1.1 1.10 5.1 5.10}
test btree-16.2 {add tag pushes root up to level 1 node} {
    catch {destroy .t}
    text .t
    .t debug 1
    setupBig
    .t tag add x 1.1 1.10
    .t tag add x 8.1 8.10
    .t tag ranges x
} {1.1 1.10 8.1 8.10}
test btree-16.3 {add tag pushes root up to level 2 node} {
    .t tag remove x 1.0 end
    .t tag add x 8.1 9.10
    .t tag add x 180.1 180.end
    .t tag ranges x
} {8.1 9.10 180.1 180.23}
test btree-16.4 {add tag pushes root up to level 3 node} {
    .t tag remove x 1.0 end
    .t tag add y 1.1 2000.0
    .t tag add x 1.1 8.10
    .t tag add x 180.end 217.0
    list [.t tag ranges x] [.t tag ranges y]
} {{1.1 8.10 180.23 217.0} {1.1 2000.0}}
test btree-16.5 {add tag doesn't push root up} {
    .t tag remove x 1.0 end
    .t tag add x 1.1 8.10
    .t tag add x 2000.0 2000.3
    .t tag add x 180.end 217.0
    .t tag ranges x
} {1.1 8.10 180.23 217.0 2000.0 2000.3}
test btree-16.6 {two node splits at once pushes root up} {
    .t delete 1.0 end
    for {set i 1} {$i < 10} {incr i} {
	.t insert end "Line $i\n"
    }
    .t tag add x 8.0 8.end
    .t tag add y 9.0 end
    set x {}
    for {} {$i < 50} {incr i} {
	append x "Line $i\n"
    }
    .t insert end $x y
    list [.t tag ranges x] [.t tag ranges y]
} {{8.0 8.6} {9.0 51.0}}
# The following find bugs in the SearchStart procedures
test btree-16.7 {Partial tag remove from before first range} {
    .t tag remove x 1.0 end
    .t tag add x 2.0 2.6
    .t tag remove x 1.0 2.0
    .t tag ranges x
} {2.0 2.6}
test btree-16.8 {Partial tag remove from before first range} {
    .t tag remove x 1.0 end
    .t tag add x 2.0 2.6
    .t tag remove x 1.0 2.1
    .t tag ranges x
} {2.1 2.6}
test btree-16.9 {Partial tag remove from before first range} {
    .t tag remove x 1.0 end
    .t tag add x 2.0 2.6
    .t tag remove x 1.0 2.3
    .t tag ranges x
} {2.3 2.6}
test btree-16.10 {Partial tag remove from before first range} {
    .t tag remove x 1.0 end
    .t tag add x 1.0 2.6
    .t tag remove x 1.0 2.5
    .t tag ranges x
} {2.5 2.6}
test btree-16.11 {StartSearchBack boundary case} {
    .t tag remove x 1.0 end
    .t tag add x 1.3 1.4
    .t tag prevr x 2.0 1.4
} {}
test btree-16.12 {StartSearchBack boundary case} {
    .t tag remove x 1.0 end
    .t tag add x 1.3 1.4
    .t tag prevr x 2.0 1.3
} {1.3 1.4}
test btree-16.13 {StartSearchBack boundary case} {
    .t tag remove x 1.0 end
    .t tag add x 1.0 1.4
    .t tag prevr x 1.3
} {1.0 1.4}


test btree-17.1 {remove tag does not push root down} {
    catch {destroy .t}
    text .t
    .t debug 0
    setupBig
    .t tag add x 1.1 5.10
    .t tag remove x 3.1 5.end
    .t tag ranges x
} {1.1 3.1}
test btree-17.2 {remove tag pushes root from level 1 to level 0} {
    .t tag remove x 1.0 end
    .t tag add x 1.1 8.10
    .t tag remove x 3.1 end
    .t tag ranges x
} {1.1 3.1}
test btree-17.3 {remove tag pushes root from level 2 to level 1} {
    .t tag remove x 1.0 end
    .t tag add x 1.1 180.10
    .t tag remove x 35.1 end
    .t tag ranges x
} {1.1 35.1}
test btree-17.4 {remove tag doesn't change level 2} {
    .t tag remove x 1.0 end
    .t tag add x 1.1 180.10
    .t tag remove x 35.1 180.0
    .t tag ranges x
} {1.1 35.1 180.0 180.10}
test btree-17.5 {remove tag pushes root from level 3 to level 0} {
    .t tag remove x 1.0 end
    .t tag add x 1.1 1.10
    .t tag add x 2000.1 2000.10
    .t tag remove x 1.0 2000.0
    .t tag ranges x
} {2000.1 2000.10}
test btree-17.6 {text deletion pushes root from level 3 to level 0} {
    .t tag remove x 1.0 end
    .t tag add x 1.1 1.10
    .t tag add x 2000.1 2000.10
    .t delete 1.0 "1000.0 lineend +1 char"
    .t tag ranges x
} {1000.1 1000.10}

catch {destroy .t}
text .t
test btree-18.1 {tag search back, no tag} {
    .t insert 1.0 "Line 1 abcd efgh ijkl\n"
    .t tag prev x 1.1 1.1
} {}
test btree-18.2 {tag search back, start at existing range} {
    .t tag remove x 1.0 end
    .t tag add x 1.1 1.4
    .t tag add x 1.8 1.11
    .t tag add x 1.16
    .t tag prev x 1.1
} {}
test btree-18.3 {tag search back, end at existing range} {
    .t tag remove x 1.0 end
    .t tag add x 1.1 1.4
    .t tag add x 1.8 1.11
    .t tag add x 1.16
    .t tag prev x 1.3 1.1
} {1.1 1.4}
test btree-18.4 {tag search back, start within range} {
    .t tag remove x 1.0 end
    .t tag add x 1.1 1.4
    .t tag add x 1.8 1.11
    .t tag add x 1.16
    .t tag prev x 1.10 1.0
} {1.8 1.11}
test btree-18.5 {tag search back, start at end of range} {
    .t tag remove x 1.0 end
    .t tag add x 1.1 1.4
    .t tag add x 1.8 1.11
    .t tag add x 1.16
    list [.t tag prev x 1.4 1.0] [.t tag prev x 1.11 1.0]
} {{1.1 1.4} {1.8 1.11}}
test btree-18.6 {tag search back, start beyond range, same level 0 node} {
    .t tag remove x 1.0 end
    .t tag add x 1.1 1.4
    .t tag add x 1.8 1.11
    .t tag add x 1.16
    .t tag prev x 3.0
} {1.16 1.17}
test btree-18.7 {tag search back, outside any range} {
    .t tag remove x 1.0 end
    .t tag add x 1.1 1.4
    .t tag add x 1.16
    .t tag prev x 1.8 1.5
} {}
test btree-18.8 {tag search back, start at start of node boundary} {
    setupBig
    .t tag remove x 1.0 end
    .t tag add x 2.5 2.8
    .t tag prev x 19.0
} {2.5 2.8}
test btree-18.9 {tag search back, large complex btree spans} {
    .t tag remove x 1.0 end
    .t tag add x 1.3 1.end
    .t tag add x 200.0 220.0
    .t tag add x 500.0 520.0
    list [.t tag prev x end] [.t tag prev x 433.0]
} {{500.0 520.0} {200.0 220.0}}

destroy .t

# cleanup
cleanupTests
return