# -*- tcl -*-
# Graph tests - arc flip
# Copyright (c) 2006 Andreas Kupries <andreas_kupries@users.sourceforge.net>
# All rights reserved.
# RCS: @(#) $Id: flip.test,v 1.2 2007/04/12 03:01:55 andreas_kupries Exp $

# Syntax: graph arc flip ARC

# -------------------------------------------------------------------------
# Wrong # args: Missing, Too many

test graph-${impl}-${setimpl}-arc-flip-1.0 {arc flip, wrong#args, missing} {
    SETUP
    catch {mygraph arc flip} res
    mygraph destroy
    set res
} [tmWrong {arc flip} arc 0]

test graph-${impl}-${setimpl}-arc-flip-1.1 {arc flip, wrong#args, too many} {
    SETUP
    catch {mygraph arc flip a b} res
    mygraph destroy
    set res
} [tmTooMany {arc flip} arc]

# -------------------------------------------------------------------------
# Logical arguments checks and failures

test graph-${impl}-${setimpl}-arc-flip-2.0 {arc flip, missing arc} {
    SETUP
    catch {mygraph arc flip a} res
    mygraph destroy
    set res
} [MissingArc $MY a]

# -------------------------------------------------------------------------
# Ok arguments.

test graph-${impl}-${setimpl}-arc-flip-3.0 {arc flip, regular arc} {
    SETUP
    mygraph node insert 0 1
    mygraph arc  insert 0 1 a
    mygraph arc  flip a
    set res [list [mygraph arc source a] [mygraph arc target a]]
    mygraph destroy
    set res
} {1 0}

test graph-${impl}-${setimpl}-arc-flip-3.1 {arc flip, loop} {
    SETUP
    mygraph node insert 0
    mygraph arc  insert 0 0 a
    mygraph arc  flip a
    set res [list [mygraph arc source a] [mygraph arc target a]]
    mygraph destroy
    set res
} {0 0}

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