# This test suite is for validating scheduler simultaneous event ordering in ns## To run all tests:  test-all-scheduler## To run individual tests:# ns test-suite-scheduler.tcl List# ns test-suite-scheduler.tcl Calendar# ns test-suite scheduler.tcl Heap## To view a list of available tests to run with this script:# ns test-suite-scheduler.tcl#remove-all-packet-headers       ; # removes all except commonadd-packet-header Flags IP TCP  ; # hdrs reqd for validation test # FOR UPDATING GLOBAL DEFAULTS:# What does this simple test do?#   - it schedules $TIMES batches of events.  Each batch contains $SIMUL events, #     all of which will occur at the same time.  All events are permuted and#     scheduled in a random order.  The output should be a list of integers #     from 1 to ($TIMES*$SIMUL) in increasing order.#   - if the output differs it exits with status 1, otherwise it exits with status 0.proc comp {a b} {	set a1 [lindex $a 0]	set b1 [lindex $b 0]	if {$a1 > $b1} {		return 1	}	return 0}Class TestSuiteTestSuite instproc init { quiet } {	$self instvar ns_ rng_ N_ quiet_	set ns_ [new Simulator]	set rng_ [new RNG]	set N_ 0	set quiet_ $quiet}TestSuite instproc run { scheduler } {	$self instvar ns_ rng_ N_	if { [catch "$ns_ use-scheduler $scheduler"] } {		puts "*** WARNING: scheduler Scheduler/$scheduler is not supported, test was not run"		exit 0	}		set TIMES 20  ;# $TIMES different times for events	set SIMUL 50  ;# each occurs $SIMUL times	set TIMEMIN 0 ;# random events are taken from [TIMEMIN, TIMEMAX]	set TIMEMAX 5	# generate random event timings and put them in increasing order by time to occur	for {set i 0 } { $i < $TIMES } { incr i } {		lappend timings [list [$rng_ uniform $TIMEMIN $TIMEMAX] $i $SIMUL]	}	set stimings [lsort -command "comp" $timings]	for {set i 0 } { $i < $TIMES } { incr i } {		set e [lindex $stimings $i]		set idx [lsearch $timings $e]		set timings [lreplace $timings $idx $idx [lappend e $i]]	}	while 1 {		# pull out timings in random order		set i [expr int([$rng_ uniform 0 [llength $timings]])]		set e [lindex $timings $i]				set order [lindex $e 3]		set left  [lindex $e 2]		set label [expr $SIMUL - $left + 1 + $order*$SIMUL]		$ns_ at [lindex $e 0] "$self assert $label"		incr left -1		if {$left==0} {			set timings [lreplace $timings $i $i]			if {$timings == ""} break		} else {			set e [lreplace $e 2 2 $left]			set timings [lreplace $timings $i $i $e]		}	}	$ns_ run	exit 0}TestSuite instproc assert { n } {	$self instvar N_ quiet_	if { $quiet_ != "QUIET" } {		puts $n	}	if [expr $n != $N_ + 1 ] {		exit 1	}	set N_ $n}TestSuite proc usage {} {	global argv0	puts stderr "usage: ns $argv0 <scheduler> \[quiet\]"	exit 1}global argc argvset quiet ""if { $argc == 2 } {	set quiet [lindex $argv 1]	if { $quiet != "QUIET" && $quiet != "quiet" } {		TestSuite usage	}	set quiet "QUIET"	}if { $argc > 0 && $argc < 3 } {	set scheduler [lindex $argv 0]} else {	TestSuite usage}set test [new TestSuite $quiet]$test run $scheduler