#!/usr/bin/env expect
############################################################################
# Purpose: Test of Slurm functionality
#          Confirm that a job executes with the proper node count
#          (--nodes option).
############################################################################
# Copyright (C) 2002-2007 The Regents of the University of California.
# Copyright (C) 2008-2010 Lawrence Livermore National Security.
# Produced at Lawrence Livermore National Laboratory (cf, DISCLAIMER).
# Written by Morris Jette <jette1@llnl.gov>
# CODE-OCEC-09-009. All rights reserved.
#
# This file is part of Slurm, a resource management program.
# For details, see <https://slurm.schedmd.com/>.
# Please also read the included file: DISCLAIMER.
#
# Slurm is free software; you can redistribute it and/or modify it under
# the terms of the GNU General Public License as published by the Free
# Software Foundation; either version 2 of the License, or (at your option)
# any later version.
#
# Slurm is distributed in the hope that it will be useful, but WITHOUT ANY
# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
# FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
# details.
#
# You should have received a copy of the GNU General Public License along
# with Slurm; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA.
############################################################################
source ./globals

set job_id      0

proc cleanup {} {
	global job_id

	cancel_job $job_id
}

#
# Submit a 1 node job and validate that we don't get more than one
#
set host_0      ""
set task_cnt  0
set timeout $max_job_delay
spawn $salloc -N1-1 -t1 $srun -c 1 -l $bin_printenv SLURMD_NODENAME
expect {
	-re "Granted job allocation ($number)" {
		set job_id $expect_out(1,string)
		exp_continue
	}
	-re "(Task count specification invalid|configuration not available)" {
		skip "Test not compatible with this configuration"
	}
	-re "($number): *($re_word_str)" {
		if {$task_cnt == 0} {
			set host_0 $expect_out(2,string)
		}
		incr task_cnt
		exp_continue
	}
	timeout {
		fail "salloc not responding"
	}
	eof {
		wait
	}
}

if {$host_0 eq ""} {
	fail "Did not get SLURMD_NODENAME of task 0"
}

set alloc_fail 0
set job_id     0
set task_cnt2  0
spawn $salloc -N1-1 -w DUMMY_HOSTNAME -t1 $srun -n [expr $task_cnt + 1] -l $bin_printenv SLURMD_NODENAME
expect {
	-re "Granted job allocation ($number)" {
		set job_id $expect_out(1,string)
		exp_continue
	}
	-re "($number):" {
		incr task_cnt2
		exp_continue
	}
	-re "Invalid node name specified" {
		log_info "This error is expected, no worries"
		set alloc_fail 1
	}
	timeout {
		fail "salloc not responding"
	}
	eof {
		wait
	}
}
subtest {$alloc_fail != 0} "Verify error message was received"
subtest {$task_cnt2 == 0} "Verify no steps ran" "Allocated more tasks than processors"

#
# Submit a 1 node job
#
set job_id      0
set host_0      ""
set host_1      ""

spawn $salloc -N1-1 -t1 $srun -l $bin_printenv SLURMD_NODENAME
expect {
	 -re "Granted job allocation ($number)" {
		set job_id $expect_out(1,string)
		exp_continue
	}
	-re "($number): *($re_word_str)" {
		if {$expect_out(1,string) == 0} {
			set host_0 $expect_out(2,string)
		}
		if {$expect_out(1,string) == 1} {
			set host_1 $expect_out(2,string)
		}
		exp_continue
	}
	timeout {
		fail "salloc not responding"
	}
	eof {
		wait
	}
}

#
# Verify node count
#
subtest {$host_0 ne ""} "A task should run on the first host"
subtest {$host_1 eq ""} "Only a single task should run" "A task was found running on the second host $host_1"

#
# Submit a 1 to 3 node job
#
set job_id      0
set host_0      ""
set host_1      ""
set host_2      ""
set host_3      ""
set timeout $max_job_delay
spawn $salloc -N1-3 -t1 $srun -l $bin_printenv SLURMD_NODENAME
expect {
	-re "Granted job allocation ($number)" {
		set job_id $expect_out(1,string)
		exp_continue
	}
	-re "($number): *($re_word_str)" {
		if {$expect_out(1,string) == 0} {
			set host_0 $expect_out(2,string)
		}
		if {$expect_out(1,string) == 1} {
			set host_1 $expect_out(2,string)
		}
		if {$expect_out(1,string) == 2} {
			set host_2 $expect_out(2,string)
		}
		if {$expect_out(1,string) == 3} {
			set host_3 $expect_out(2,string)
		}
		exp_continue
	}
	timeout {
		fail "salloc not responding"
	}
	eof {
		wait
	}
}

#
# Verify node count
#
subtest {$host_0 ne ""} "A task should run on the first host"
subtest {$host_3 eq ""} "Only three tasks should run" "A task was found running on the fourth host $host_3"

set dup_host 0
if {$host_0 eq $host_1} {
	set dup_host 1
}
if {$host_0 eq $host_2} {
	set dup_host 1
}
if {$host_0 eq $host_3} {
	set dup_host 1
}
if {$dup_host == 1} {
	fail "Re-used a node in the allocation"
}

# find out if we have enough nodes to test functionality
set node_count [get_partition_param [default_partition] "TotalNodes"]
if { $node_count < 2 } {
	skip "Insufficient nodes in default partition to continue ($node_count < 2)"
}

#
# Submit a 2 to 3 node job
#
set job_id      0
set host_0      ""
set host_1      ""
set host_2      ""
set host_3      ""
set timeout $max_job_delay
spawn $salloc -N2-3 -t1 $srun -l $bin_printenv SLURMD_NODENAME
expect {
	-re "Granted job allocation ($number)" {
		set job_id $expect_out(1,string)
		exp_continue
	}
	-re "salloc: error" {
		cancel_job $job_id
		skip "Can't test salloc task distribution"
	}
	-re "($number): *($re_word_str)" {
		if {$expect_out(1,string) == 0} {
			set host_0 $expect_out(2,string)
		}
		if {$expect_out(1,string) == 1} {
			set host_1 $expect_out(2,string)
		}
		if {$expect_out(1,string) == 2} {
			set host_2 $expect_out(2,string)
		}
		if {$expect_out(1,string) == 3} {
			set host_3 $expect_out(1,string)
		}
		exp_continue
	}
	timeout {
		fail "salloc not responding"
	}
	eof {
		wait
	}
}

#
# Verify node count
#
subtest {$host_0 ne ""} "A task should run on the first host"
subtest {$host_1 ne ""} "A task should run on the second host"
subtest {$host_3 eq ""} "Only three tasks should run" "A task was found running on the fourth host $host_3"

set dup_host 0
if {$host_0 eq $host_1} {
	set dup_host 1
}
if {$host_0 eq $host_2} {
	set dup_host 1
}
if {$host_0 eq $host_3} {
	set dup_host 1
}
if {$dup_host == 1} {
	fail "Re-used a node in the allocation"
}