# Commands covered:  lrange
#
# 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 {"::tcltest" ni [namespace children]} {
    package require tcltest 2.5
    namespace import -force ::tcltest::*
}

::tcltest::loadTestedCommands
catch [list package require -exact Tcltest [info patchlevel]]

testConstraint testpurebytesobj [llength [info commands testpurebytesobj]]


test lrange-1.1 {range of list elements} {
    lrange {a b c d} 1 2
} {b c}
test lrange-1.2 {range of list elements} {
    lrange {a {bcd e {f g {}}} l14 l15 d} 1 1
} {{bcd e {f g {}}}}
test lrange-1.3 {range of list elements} {
    lrange {a {bcd e {f g {}}} l14 l15 d} 3 end
} {l15 d}
test lrange-1.4 {range of list elements} {
    lrange {a {bcd e {f g {}}} l14 l15 d} 4 10000
} {d}
test lrange-1.5 {range of list elements} {
    lrange {a {bcd e {f g {}}} l14 l15 d} 4 3
} {}
test lrange-1.6 {range of list elements} {
    lrange {a {bcd e {f g {}}} l14 l15 d} 10 11
} {}
test lrange-1.7 {range of list elements} {
    lrange {a b c d e} -1 2
} {a b c}
test lrange-1.8 {range of list elements} {
    lrange {a b c d e} -2 -1
} {}
test lrange-1.9 {range of list elements} {
    lrange {a b c d e} -2 end
} {a b c d e}
test lrange-1.10 {range of list elements} {
    lrange "a b\{c d" 1 2
} "b\\{c d"
test lrange-1.11 {range of list elements} {
    lrange "a b c d" end end
} d
test lrange-1.12 {range of list elements} {
    lrange "a b c d" end 100000
} d
test lrange-1.13 {range of list elements} {
    lrange "a b c d" end 3
} d
test lrange-1.14 {range of list elements} {
    lrange "a b c d" end 2
} {}
test lrange-1.15 {range of list elements} {
    concat \"[lrange {a b \{\   	} 0 2]"
} {"a b \{\ "}
# emacs highlighting bug workaround --> "
test lrange-1.16 {list element quoting} {
    lrange {[append a .b]} 0 end
} {{[append} a .b\]}

test lrange-2.1 {error conditions} {
    list [catch {lrange a b} msg] $msg
} {1 {wrong # args: should be "lrange list first last"}}
test lrange-2.2 {error conditions} {
    list [catch {lrange a b 6 7} msg] $msg
} {1 {wrong # args: should be "lrange list first last"}}
test lrange-2.3 {error conditions} {
    list [catch {lrange a b 6} msg] $msg
} {1 {bad index "b": must be integer?[+-]integer? or end?[+-]integer?}}
test lrange-2.4 {error conditions} {
    list [catch {lrange a 0 enigma} msg] $msg
} {1 {bad index "enigma": must be integer?[+-]integer? or end?[+-]integer?}}
test lrange-2.5 {error conditions} {
    list [catch {lrange "a \{b c" 3 4} msg] $msg
} {1 {unmatched open brace in list}}
test lrange-2.6 {error conditions} {
    list [catch {lrange "a b c \{ d e" 1 4} msg] $msg
} {1 {unmatched open brace in list}}

test lrange-3.1 {Bug 3588366: end-offsets before start} {
    apply {l {
	lrange $l 0 end-5
    }} {1 2 3 4 5}
} {}

test lrange-3.2 {compiled with static indices out of range, negative} {
    list [lrange {a b c} -1 -2] [lrange {a b c} -2 -1] [lrange {a b c} -3 -2] [lrange {a b c} -2 -3]
} [lrepeat 4 {}]
test lrange-3.3 {compiled with calculated indices out of range, negative constant} {
    list [lrange {a b c} 0-1 -1-1] [lrange {a b c} -2+0 0-1] [lrange {a b c} -2-1 -2+1] [lrange {a b c} -2+1 -2-1]
} [lrepeat 4 {}]
test lrange-3.4 {compiled with calculated indices out of range, after end} {
    list [lrange {a b c} end+1 end+2] [lrange {a b c} end+2 end+1] [lrange {a b c} end+2 end+3] [lrange {a b c} end+3 end+2]
} [lrepeat 4 {}]

test lrange-3.5 {compiled with calculated indices, start out of range (negative)} {
    list [lrange {a b c} -1 1] [lrange {a b c} -1+0 end-1] [lrange {a b c} -2 1] [lrange {a b c} -2+0 0+1]
} [lrepeat 4 {a b}]
test lrange-3.6 {compiled with calculated indices, end out of range (after end)} {
    list [lrange {a b c} 1 end+1] [lrange {a b c} 1+0 2+1] [lrange {a b c} 1 end+1] [lrange {a b c} end-1 3+1]
} [lrepeat 4 {b c}]

test lrange-3.7a {compiled on empty not canonical list (with static and dynamic indices), regression test, bug [cc1e91552c]} {
    list [lrange { } 0 1] [lrange [format %c 32] 0 1] [lrange [set a { }] 0 1] \
	 [lrange { } 0-1 end+1] [lrange [format %c 32] 0-1 end+1] [lrange $a 0-1 end+1]
} [lrepeat 6 {}]
test lrange-3.7b {not compiled on empty not canonical list (with static and dynamic indices), regression test, bug [cc1e91552c]} {
    set cmd lrange
    list [$cmd { } 0 1] [$cmd [format %c 32] 0 1] [$cmd [set a { }] 0 1] \
	 [$cmd { } 0-1 end+1] [$cmd [format %c 32] 0-1 end+1] [$cmd $a 0-1 end+1]
} [lrepeat 6 {}]
# following 4 tests could cause a segfault on empty non-lists with tclEmptyStringRep
# (as before the fix [58c46e74b931d3a1]):
test lrange-3.7a.2 {compiled on empty not list object, 2nd regression test, bug [cc1e91552c]} {
    list [lrange {} 0 1] [lrange [lindex a -1] 0 1] [lrange [set a {}] 0 1] \
	 [lrange {} 0-1 end+1] [lrange [lindex a -1] 0-1 end+1] [lrange $a 0-1 end+1]
} [lrepeat 6 {}]
test lrange-3.7b.2 {not compiled on empty not list object, 2nd regression test, bug [cc1e91552c]} {
    set cmd lrange
    list [$cmd {} 0 1] [$cmd [lindex a -1] 0 1] [$cmd [set a {}] 0 1] \
	 [$cmd {} 0-1 end+1] [$cmd [lindex a -1] 0-1 end+1] [$cmd $a 0-1 end+1]
} [lrepeat 6 {}]
test lrange-3.7c.2 {compiled on empty pure bytes object, 2nd regression test, bug [cc1e91552c]} -constraints {
    testpurebytesobj
} -body {
    list [lrange [testpurebytesobj] 0 1] [lrange [testpurebytesobj { }] 0 1] [lrange [set a [testpurebytesobj {}]] 0 1] \
	 [lrange [testpurebytesobj] 0-1 end+1] [lrange [testpurebytesobj { }] 0-1 end+1] [lrange $a 0-1 end+1]
} -result [lrepeat 6 {}]
test lrange-3.7d.2 {not compiled on empty pure bytes object, 2nd regression test, bug [cc1e91552c]} -constraints {
    testpurebytesobj
} -body {
    set cmd lrange
    list [$cmd [testpurebytesobj] 0 1] [$cmd [testpurebytesobj { }] 0 1] [$cmd [set a [testpurebytesobj {}]] 0 1] \
	 [$cmd [testpurebytesobj] 0-1 end+1] [$cmd [testpurebytesobj { }] 0-1 end+1] [$cmd $a 0-1 end+1]
} -result [lrepeat 6 {}]


# cleanup
::tcltest::cleanupTests
return

# Local Variables:
# mode: tcl
# End:
