# Commands covered:  lindex

 #

 # 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.

 # Copyright (c) 2001 by Kevin B. Kenny.  All rights reserved.

 #

 # See the file "license.terms" for information on usage and redistribution

 # of this file, and for a DISCLAIMER OF ALL WARRANTIES.

 #

 # RCS: @(#) $Id: lindex.test,v 1.10 2002/04/19 13:08:56 dkf Exp $

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

     package require tcltest

     namespace import -force ::tcltest::*

 }

 set lindex lindex

 set minus -

 # Tests of Tcl_LindexObjCmd, NOT COMPILED

 test lindex-1.1 {wrong # args} {

     list [catch {eval $lindex} result] $result

 } "1 {wrong # args: should be \"lindex list ?index...?\"}"

 # Indices that are lists or convertible to lists

 test lindex-2.1 {empty index list} {

     set x {}

     list [eval [list $lindex {a b c} $x]] [eval [list $lindex {a b c} $x]]

 } {{a b c} {a b c}}

 test lindex-2.2 {singleton index list} {

     set x { 1 }

     list [eval [list $lindex {a b c} $x]] [eval [list $lindex {a b c} $x]]

 } {b b}

 test lindex-2.3 {multiple indices in list} {

     set x {1 2}

     list [eval [list $lindex {{a b c} {d e f}} $x]] \

 	[eval [list $lindex {{a b c} {d e f}} $x]]

 } {f f}

 test lindex-2.4 {malformed index list} {

     set x \{

     list [catch { eval [list $lindex {a b c} $x] } result] $result

 } {1 bad\ index\ \"\{\":\ must\ be\ integer\ or\ end?-integer?}

 # Indices that are integers or convertible to integers

 test lindex-3.1 {integer -1} {

     set x ${minus}1

     list [eval [list $lindex {a b c} $x]] [eval [list $lindex {a b c} $x]]

 } {{} {}}

 test lindex-3.2 {integer 0} {

     set x [string range 00 0 0]

     list [eval [list $lindex {a b c} $x]] [eval [list $lindex {a b c} $x]]

 } {a a}

 test lindex-3.3 {integer 2} {

     set x [string range 22 0 0]

     list [eval [list $lindex {a b c} $x]] [eval [list $lindex {a b c} $x]]

 } {c c}

 test lindex-3.4 {integer 3} {

     set x [string range 33 0 0]

     list [eval [list $lindex {a b c} $x]] [eval [list $lindex {a b c} $x]]

 } {{} {}}

 test lindex-3.5 {bad octal} {

     set x 08

     list [catch { eval [list $lindex {a b c} $x] } result] $result

 } "1 {bad index \"08\": must be integer or end?-integer? (looks like invalid octal number)}"

 test lindex-3.6 {bad octal} {

     set x -09

     list [catch { eval [list $lindex {a b c} $x] } result] $result

 } "1 {bad index \"-09\": must be integer or end?-integer? (looks like invalid octal number)}"

 test lindex-3.7 {indexes don't shimmer wide ints} {

     set x [expr {(wide(1)<<31) - 2}]

     list $x [lindex {1 2 3} $x] [incr x] [incr x]

 } {2147483646 {} 2147483647 2147483648}

 # Indices relative to end

 test lindex-4.1 {index = end} {

     set x end

     list [eval [list $lindex {a b c} $x]] [eval [list $lindex {a b c} $x]]

 } {c c}

 test lindex-4.2 {index = end--1} {

     set x end--1

     list [eval [list $lindex {a b c} $x]] [eval [list $lindex {a b c} $x]]

 } {{} {}}

 test lindex-4.3 {index = end-0} {

     set x end-0

     list [eval [list $lindex {a b c} $x]] [eval [list $lindex {a b c} $x]]

 } {c c}

 test lindex-4.4 {index = end-2} {

     set x end-2

     list [eval [list $lindex {a b c} $x]] [eval [list $lindex {a b c} $x]]

 } {a a}

 test lindex-4.5 {index = end-3} {

     set x end-3

     list [eval [list $lindex {a b c} $x]] [eval [list $lindex {a b c} $x]]

 } {{} {}}

 test lindex-4.6 {bad octal} {

     set x end-08

     list [catch { eval [list $lindex {a b c} $x] } result] $result

 } "1 {bad index \"end-08\": must be integer or end?-integer? (looks like invalid octal number)}"

 test lindex-4.7 {bad octal} {

     set x end--09

     list [catch { eval [list $lindex {a b c} $x] } result] $result

 } "1 {bad index \"end--09\": must be integer or end?-integer?}"

 test lindex-4.8 {bad integer, not octal} {

     set x end-0a2

     list [catch { eval [list $lindex {a b c} $x] } result] $result

 } "1 {bad index \"end-0a2\": must be integer or end?-integer?}"

 test lindex-4.9 {incomplete end} {

     set x en

     list [eval [list $lindex {a b c} $x]] [eval [list $lindex {a b c} $x]]

 } {c c}

 test lindex-4.10 {incomplete end-} {

     set x end-

     list [catch { eval [list $lindex {a b c} $x] } result] $result

 } "1 {bad index \"end-\": must be integer or end?-integer?}"

 test lindex-5.1 {bad second index} {

     list [catch { eval [list $lindex {a b c} 0 0a2] } result] $result

 } "1 {bad index \"0a2\": must be integer or end?-integer?}"

 test lindex-5.2 {good second index} {

     eval [list $lindex {{a b c} {d e f} {g h i}} 1 2]

 } f

 test lindex-5.3 {three indices} {

     eval [list $lindex {{{a b} {c d}} {{e f} {g h}}} 1 0 1]

 } f

 test lindex-6.1 {error conditions in parsing list} {

     list [catch {eval [list $lindex "a \{" 2]} msg] $msg

 } {1 {unmatched open brace in list}}

 test lindex-6.2 {error conditions in parsing list} {

     list [catch {eval [list $lindex {a {b c}d e} 2]} msg] $msg

 } {1 {list element in braces followed by "d" instead of space}}

 test lindex-6.3 {error conditions in parsing list} {

     list [catch {eval [list $lindex {a "b c"def ghi} 2]} msg] $msg

 } {1 {list element in quotes followed by "def" instead of space}}

 test lindex-7.1 {quoted elements} {

     eval [list $lindex {a "b c" d} 1]

 } {b c}

 test lindex-7.2 {quoted elements} {

     eval [list $lindex {"{}" b c} 0]

 } {{}}

 test lindex-7.3 {quoted elements} {

     eval [list $lindex {ab "c d \" x" y} 1]

 } {c d " x}

 test lindex-7.4 {quoted elements} {

     lindex {a b {c d "e} {f g"}} 2

 } {c d "e}

 test lindex-8.1 {data reuse} {

     set x 0

     eval [list $lindex $x $x]

 } {0}

 test lindex-8.2 {data reuse} {

     set a 0

     eval [list $lindex $a $a $a]

 } 0

 test lindex-8.3 {data reuse} {

     set a 1

     eval [list $lindex $a $a $a]

 } {}

 test lindex-8.4 {data reuse} {

     set x [list 0 0]

     eval [list $lindex $x $x]

 } {0}

 test lindex-8.5 {data reuse} {

     set x 0

     eval [list $lindex $x [list $x $x]]

 } {0}

 test lindex-8.6 {data reuse} {

     set x [list 1 1]

     eval [list $lindex $x $x]

 } {}

 test lindex-8.7 {data reuse} {

     set x 1

     eval [list lindex $x [list $x $x]]

 } {}

 #----------------------------------------------------------------------

 # Compilation tests for lindex

 test lindex-9.1 {wrong # args} {

     list [catch {lindex} result] $result

 } "1 {wrong # args: should be \"lindex list ?index...?\"}"

 # Indices that are lists or convertible to lists

 test lindex-10.1 {empty index list} {

     set x {}

     catch {

 	list [lindex {a b c} $x] [lindex {a b c} $x]

     } result

     set result

 } {{a b c} {a b c}}

 test lindex-10.2 {singleton index list} {

     set x { 1 }

     catch {

 	list [lindex {a b c} $x] [lindex {a b c} $x]

     } result

     set result

 } {b b}

 test lindex-10.3 {multiple indices in list} {

     set x {1 2}

     catch {

 	list [lindex {{a b c} {d e f}} $x] [lindex {{a b c} {d e f}} $x]

     } result

     set result

 } {f f}

 test lindex-10.4 {malformed index list} {

     set x \{

     list [catch { lindex {a b c} $x } result] $result

 } {1 bad\ index\ \"\{\":\ must\ be\ integer\ or\ end?-integer?}

 # Indices that are integers or convertible to integers

 test lindex-11.1 {integer -1} {

     set x ${minus}1

     catch {

 	list [lindex {a b c} $x] [lindex {a b c} $x]

     } result

     set result

 } {{} {}}

 test lindex-11.2 {integer 0} {

     set x [string range 00 0 0]

     catch {

 	list [lindex {a b c} $x] [lindex {a b c} $x]

     } result

     set result

 } {a a}

 test lindex-11.3 {integer 2} {

     set x [string range 22 0 0]

     catch {

 	list [lindex {a b c} $x] [lindex {a b c} $x]

     } result

     set result

 } {c c}

 test lindex-11.4 {integer 3} {

     set x [string range 33 0 0]

     catch {

 	list [lindex {a b c} $x] [lindex {a b c} $x]

     } result

     set result

 } {{} {}}

 test lindex-11.5 {bad octal} {

     set x 08

     list [catch { lindex {a b c} $x } result] $result

 } "1 {bad index \"08\": must be integer or end?-integer? (looks like invalid octal number)}"

 test lindex-11.6 {bad octal} {

     set x -09

     list [catch { lindex {a b c} $x } result] $result

 } "1 {bad index \"-09\": must be integer or end?-integer? (looks like invalid octal number)}"

 # Indices relative to end

 test lindex-12.1 {index = end} {

     set x end

     catch {

 	list [lindex {a b c} $x] [lindex {a b c} $x]

     } result

     set result

 } {c c}

 test lindex-12.2 {index = end--1} {

     set x end--1

     catch {

 	list [lindex {a b c} $x] [lindex {a b c} $x]

     } result

     set result

 } {{} {}}

 test lindex-12.3 {index = end-0} {

     set x end-0

     catch {

 	list [lindex {a b c} $x] [lindex {a b c} $x]

     } result

     set result

 } {c c}

 test lindex-12.4 {index = end-2} {

     set x end-2

     catch {

 	list [lindex {a b c} $x] [lindex {a b c} $x]

     } result

     set result

 } {a a}

 test lindex-12.5 {index = end-3} {

     set x end-3

     catch {

 	list [lindex {a b c} $x] [lindex {a b c} $x]

     } result

     set result

 } {{} {}}

 test lindex-12.6 {bad octal} {

     set x end-08

     list [catch { lindex {a b c} $x } result] $result

 } "1 {bad index \"end-08\": must be integer or end?-integer? (looks like invalid octal number)}"

 test lindex-12.7 {bad octal} {

     set x end--09

     list [catch { lindex {a b c} $x } result] $result

 } "1 {bad index \"end--09\": must be integer or end?-integer?}"

 test lindex-12.8 {bad integer, not octal} {

     set x end-0a2

     list [catch { lindex {a b c} $x } result] $result

 } "1 {bad index \"end-0a2\": must be integer or end?-integer?}"

 test lindex-12.9 {incomplete end} {

     set x en

     catch {

 	list [lindex {a b c} $x] [lindex {a b c} $x]

     } result

     set result

 } {c c}

 test lindex-12.10 {incomplete end-} {

     set x end-

     list [catch { lindex {a b c} $x } result] $result

 } "1 {bad index \"end-\": must be integer or end?-integer?}"

 test lindex-13.1 {bad second index} {

     list [catch { lindex {a b c} 0 0a2 } result] $result

 } "1 {bad index \"0a2\": must be integer or end?-integer?}"

 test lindex-13.2 {good second index} {

     catch {

 	lindex {{a b c} {d e f} {g h i}} 1 2

     } result

     set result

 } f

 test lindex-13.3 {three indices} {

     catch {

 	lindex {{{a b} {c d}} {{e f} {g h}}} 1 0 1

     } result

     set result

 } f

 test lindex-14.1 {error conditions in parsing list} {

     list [catch { lindex "a \{" 2 } msg] $msg

 } {1 {unmatched open brace in list}}

 test lindex-14.2 {error conditions in parsing list} {

     list [catch { lindex {a {b c}d e} 2 } msg] $msg

 } {1 {list element in braces followed by "d" instead of space}}

 test lindex-14.3 {error conditions in parsing list} {

     list [catch { lindex {a "b c"def ghi} 2 } msg] $msg

 } {1 {list element in quotes followed by "def" instead of space}}

 test lindex-15.1 {quoted elements} {

     catch {

 	lindex {a "b c" d} 1

     } result

     set result

 } {b c}

 test lindex-15.2 {quoted elements} {

     catch {

 	lindex {"{}" b c} 0

     } result

     set result

 } {{}}

 test lindex-15.3 {quoted elements} {

     catch {

 	lindex {ab "c d \" x" y} 1

     } result

     set result

 } {c d " x}

 test lindex-15.4 {quoted elements} {

     catch {

 	lindex {a b {c d "e} {f g"}} 2

     } result

     set result

 } {c d "e}

 test lindex-16.1 {data reuse} {

     set x 0

     catch {

 	lindex $x $x

     } result

     set result

 } {0}

 test lindex-16.2 {data reuse} {

     set a 0

     catch {

 	lindex $a $a $a

     } result

     set result

 } 0

 test lindex-16.3 {data reuse} {

     set a 1

     catch {

 	lindex $a $a $a

     } result

     set result

 } {}

 test lindex-16.4 {data reuse} {

     set x [list 0 0]

     catch {

 	lindex $x $x

     } result

     set result

 } {0}

 test lindex-16.5 {data reuse} {

     set x 0

     catch {

 	lindex $x [list $x $x]

     } result

     set result

 } {0}

 test lindex-16.6 {data reuse} {

     set x [list 1 1]

     catch {

 	lindex $x $x

     } result

     set result

 } {}

 test lindex-16.7 {data reuse} {

     set x 1

     catch {

 	lindex $x [list $x $x]

     } result

     set result

 } {}

 catch { unset lindex}

 catch { unset minus }

 # cleanup

 ::tcltest::cleanupTests

 return