# This file is a Tcl script to test out the B-tree facilities of
# Tk's text widget.  The file "text.test" contains additional tests
# for the features of text widgets not directly involved in manipulating
# B-trees.  This file is organized in the standard fashion for Tcl tests.
#
# Copyright (c) 1992-1993 The Regents of the University of California.
# All rights reserved.
#
# Permission is hereby granted, without written agreement and without
# license or royalty fees, to use, copy, modify, and distribute this
# software and its documentation for any purpose, provided that the
# above copyright notice and the following two paragraphs appear in
# all copies of this software.
#
# IN NO EVENT SHALL THE UNIVERSITY OF CALIFORNIA BE LIABLE TO ANY PARTY FOR
# DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT
# OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF THE UNIVERSITY OF
# CALIFORNIA HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#
# THE UNIVERSITY OF CALIFORNIA SPECIFICALLY DISCLAIMS ANY WARRANTIES,
# INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
# AND FITNESS FOR A PARTICULAR PURPOSE.  THE SOFTWARE PROVIDED HEREUNDER IS
# ON AN "AS IS" BASIS, AND THE UNIVERSITY OF CALIFORNIA HAS NO OBLIGATION TO
# PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
#
# $Header: /user6/ouster/wish/tests/RCS/btree.test,v 1.7 93/10/11 17:12:01 ouster Exp $ (Berkeley)

if {[string compare test [info procs test]] == 1} then \
  {source defs}

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 2\nXYZZYLine 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 {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-2.4 {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-2.5 {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-2.6 {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-2.7 {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-2.8 {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-2.9 {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 1\nine 2\nLine 3\n"
test btree-2.10 {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-2.11 {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-2.12 {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-2.13 {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-2.14 {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
} "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 3.2 3.15
    .t get 1.0 1000000.0
} "Line 1\nLine 2\nLi\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 3.0 3.15
    .t get 1.0 1000000.0
} "Line 1\nLine 2\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 1.0 3.15
    .t get 1.0 1000000.0
} "\n"
test btree-2.18 {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-2.19 {deleting with negative range} {
    .t delete 1.0 100000.0
    .t insert 1.0 "Line 1\nLine 2\nLine 3"
    .t delete 3.2 3.1
    .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 3.2
    .t get 1.0 1000000.0
} "Line 1\nLine 2\nLine 3\n"

proc setup {} {
    .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 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-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 $bigText2
    list [.t tag ranges x] [.t tag ranges y]
} {{1.1 201.0 201.3 201.11 202.2 202.6} {201.3 201.4}}
test btree-5.3 {very large inserts, with tags} {
    setup
    for {set i 0} {$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-6.5 {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 $k.6
    }
    for {set i 199} {$i >= 2} {incr i -1} {
	.t delete $i.0 $i.100
    }
    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-7.1 {tag addition and removal, weird ranges} {
    .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 0.0 1.3
    .t tag ranges x
} {1.0 1.3}
test btree-7.2 {tag addition and removal, weird ranges} {
    .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 1.40 2.4
    .t tag ranges x
} {2.0 2.4}
test btree-7.3 {tag addition and removal, weird ranges} {
    .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 4.40 4.41
    .t tag ranges x
} {}
test btree-7.4 {tag addition and removal, weird ranges} {
    .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 5.1 5.2
    .t tag ranges x
} {}
test btree-7.5 {tag addition and removal, weird ranges} {
    .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 1.1 9.0
    .t tag ranges x
} {1.1 4.17}
test btree-7.6 {tag addition and removal, weird ranges} {
    .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 1.1 1.90
    .t tag ranges x
} {1.1 2.0}
test btree-7.6 {tag addition and removal, weird ranges} {
    .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 1.1 4.90
    .t tag ranges x
} {1.1 4.17}
test btree-7.7 {tag addition and removal with other tags in range} {
    .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 1.3 1.5
    .t tag add x 1.10 1.12
    .t tag add x 1.7 1.9
    .t tag ranges x
} {1.3 1.5 1.7 1.9 1.10 1.12}
test btree-7.8 {tag addition and removal with other tags in range} {
    .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 1.3 1.5
    .t tag add x 1.10 1.12
    .t tag add x 1.5 1.9
    .t tag ranges x
} {1.3 1.9 1.10 1.12}
test btree-7.9 {tag addition and removal with other tags in range} {
    .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 1.3 1.5
    .t tag add x 1.10 1.12
    .t tag add x 1.4 1.9
    .t tag ranges x
} {1.3 1.9 1.10 1.12}
test btree-7.10 {tag addition and removal with other tags in range} {
    .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 1.3 1.5
    .t tag add x 1.10 1.12
    .t tag add x 1.2 1.9
    .t tag ranges x
} {1.2 1.9 1.10 1.12}
test btree-7.11 {tag addition and removal with other tags in range} {
    .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 1.3 1.5
    .t tag add x 1.10 1.12
    .t tag add x 1.7 1.10
    .t tag ranges x
} {1.3 1.5 1.7 1.12}
test btree-7.12 {tag addition and removal with other tags in range} {
    .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 1.3 1.5
    .t tag add x 1.10 1.12
    .t tag add x 1.7 1.11
    .t tag ranges x
} {1.3 1.5 1.7 1.12}
test btree-7.13 {tag addition and removal with other tags in range} {
    .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 1.3 1.5
    .t tag add x 1.10 1.12
    .t tag add x 1.7 1.12
    .t tag ranges x
} {1.3 1.5 1.7 1.12}
test btree-7.14 {tag addition and removal with other tags in range} {
    .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 1.3 1.5
    .t tag add x 1.10 1.12
    .t tag add x 1.7 1.14
    .t tag ranges x
} {1.3 1.5 1.7 1.14}
test btree-7.14 {tag addition and removal with other tags in range} {
    .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 1.3 1.5
    .t tag add x 1.10 1.12
    .t tag add x 1.1 2.3
    .t tag ranges x
} {1.1 2.3}

test btree-8.1 {tag names} {
    setup
    .t tag names
} {sel x y}
test btree-8.2 {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-8.3 {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 $i 150.1 150.3
    }
    .t tag names 150.2
} {x tag1 foo ThisOne {x space} q r s t u tagA tagB tagC and more {$} \{}

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 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-9.1 {basic mark facilities} {
    msetup
    list [lsort [.t mark names]] [.t index m1] [.t index m2] [.t index m3]
} {{current insert m1 m2 m3 next x} 1.2 2.0 3.0}
test btree-9.2 {basic mark facilities} {
    msetup
    .t mark unset m2
    lsort [.t mark names]
} {current insert m1 m3 next x}
test btree-9.3 {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 m1 m2 m3 next x} 1.2 1.8 3.0}

test btree-10.1 {marks and inserts} {
    msetup
    .t insert 1.1 abcde
    list [.t index m1] [.t index next] [.t index x] [.t index m2] [.t index m3]
} {1.7 1.11 1.11 2.0 3.0}
test btree-10.2 {marks and inserts} {
    msetup
    .t insert 1.2 abcde
    list [.t index m1] [.t index next] [.t index x] [.t index m2] [.t index m3]
} {1.7 1.11 1.11 2.0 3.0}
test btree-10.3 {marks and inserts} {
    msetup
    .t insert 1.3 abcde
    list [.t index m1] [.t index next] [.t index x] [.t index m2] [.t index m3]
} {1.2 1.11 1.11 2.0 3.0}
test btree-10.4 {marks and inserts} {
    msetup
    .t insert 1.1 ab\n\ncde
    list [.t index m1] [.t index next] [.t index x] [.t index m2] [.t index m3]
} {3.4 3.8 3.8 4.0 5.0}
test btree-10.5 {marks and inserts} {
    msetup
    .t insert 1.4 ab\n\ncde
    list [.t index m1] [.t index next] [.t index x] [.t index m2] [.t index m3]
} {1.2 3.5 3.5 4.0 5.0}
test btree-10.6 {marks and inserts} {
    msetup
    .t insert 1.7 ab\n\ncde
    list [.t index m1] [.t index next] [.t index x] [.t index m2] [.t index m3]
} {1.2 1.6 1.6 4.0 5.0}

test btree-11.1 {marks and deletes} {
    msetup
    .t delete 1.3 1.5
    list [.t index m1] [.t index next] [.t index x] [.t index m2] [.t index m3]
} {1.2 1.4 1.4 2.0 3.0}
test btree-11.2 {marks and deletes} {
    msetup
    .t delete 1.3 1.8
    list [.t index m1] [.t index next] [.t index x] [.t index m2] [.t index m3]
} {1.2 1.3 1.3 2.0 3.0}
test btree-11.3 {marks and deletes} {
    msetup
    .t delete 1.2 1.8
    list [.t index m1] [.t index next] [.t index x] [.t index m2] [.t index m3]
} {1.2 1.2 1.2 2.0 3.0}
test btree-11.4 {marks and deletes} {
    msetup
    .t delete 1.1 1.8
    list [.t index m1] [.t index next] [.t index x] [.t index m2] [.t index m3]
} {1.1 1.1 1.1 2.0 3.0}
test btree-11.5 {marks and deletes} {
    msetup
    .t delete 1.5 3.1
    list [.t index m1] [.t index next] [.t index x] [.t index m2] [.t index m3]
} {1.2 1.5 1.5 1.5 1.5}
test btree-11.6 {marks and deletes} {
    msetup
    .t mark set m2 4.5
    .t delete 1.5 4.1
    list [.t index m1] [.t index next] [.t index x] [.t index m2] [.t index m3]
} {1.2 1.5 1.5 1.9 1.5}
test btree-11.7 {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 m1] [.t index next] [.t index x] [.t index m2] [.t index m3]
} {1.11 1.5 1.5 1.9 1.9}

test btree-12.1 {rebalance with empty node} {
    catch {destroy .t}
    text .t
    .t delete 1.0 end
    .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\n"
    .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"

destroy .t