# 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
