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

# Syntax: graph arc delete ARC ARC...

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

test graph-${impl}-${setimpl}-arc-delete-1.0 {arc delete, wrong#args, missing} {
    SETUP
    catch {mygraph arc delete} msg
    mygraph destroy
    set msg
} [tmE  {wrong # args: should be "::struct::graph::__arc_delete name arc arc..."} \
	{wrong # args: should be "mygraph arc delete arc arc..."}]

# Cannot use tmWrong, will be incorrect for the Tcl implementation
# run by a pre-8.4 core.
# [tmWrong {arc delete} {arc arc...} 0]

# Impossible to have too many arguments
# Any number of arcs is acceptable.

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

test graph-${impl}-${setimpl}-arc-delete-2.0 {arc delete, missing arc} {
    SETUP
    catch {mygraph arc delete arc0} msg
    mygraph destroy
    set msg
} [MissingArc $MY arc0]

# -------------------------------------------------------------------------
# Ok arguments, single, multiple deletion.

test graph-${impl}-${setimpl}-arc-delete-3.0 {arc delete} {
    SETUP

    mygraph node insert node0 node1
    mygraph arc  insert node0 node1 arc0

    set     res {}
    lappend res [mygraph arc exists arc0]
    lappend res [mygraph arc delete arc0]
    lappend res [mygraph arc exists arc0]

    mygraph destroy
    set res
} {1 {} 0}

test graph-${impl}-${setimpl}-arc-delete-3.1 {arc delete, multiple at once} {
    SETUP

    mygraph node insert node0 node1 node2 node3
    mygraph arc  insert node0 node1 arc0
    mygraph arc  insert node0 node1 arc1
    mygraph arc  insert node2 node3 arc2
    mygraph arc  insert node1 node3 arc3

    set     res {}
    lappend res [mygraph arc exists arc0]
    lappend res [mygraph arc exists arc1]
    lappend res [mygraph arc exists arc2]
    lappend res [mygraph arc exists arc3]
    lappend res [mygraph arc delete arc0 arc1 arc2 arc3]
    lappend res [mygraph arc exists arc0]
    lappend res [mygraph arc exists arc1]
    lappend res [mygraph arc exists arc2]
    lappend res [mygraph arc exists arc3]

    mygraph destroy
    set res
} {1 1 1 1 {} 0 0 0 0}

test graph-${impl}-${setimpl}-arc-delete-3.2 {arc delete, keeping adjacent nodes} {
    SETUP

    mygraph node insert node0 node1
    mygraph arc  insert node0 node1 arc0

    set     res {}
    lappend res [mygraph arc  delete arc0]
    lappend res [mygraph node exists node0]
    lappend res [mygraph node exists node1]

    mygraph destroy
    set res
} {{} 1 1}

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