#!/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 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 exit_code   0

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

#
# 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

set srun_pid [spawn $srun -N1-1 -c 1 -l -t1 $bin_printenv SLURM_NODEID]
expect {
	-re "(Task count specification invalid|configuration is not available)" {
		if { [test_front_end] } {
			skip "Error expected, Testing is incompatible with front-end systems"
		}
		exp_continue
	}
	-re "($number):" {
		if {$task_cnt == 0} {
			set host_0 $expect_out(1,string)
		}
		incr task_cnt
		exp_continue
	}
	timeout {
		log_error "srun not responding"
		slow_kill $srun_pid
		set exit_code 1
	}
	eof {
		wait
	}
}

if {[string compare $host_0 ""] == 0} {
	log_error "Did not get SLURM_NODEID of task 0"
	set exit_code 1
}

set alloc_fail 0
set task_cnt2  0
set srun_pid [spawn $srun -N1-1 -w $host_0 -n [expr $task_cnt + 1] -l -t1 $bin_printenv SLURM_NODEID]
expect {
	-re "($number):" {
		incr task_cnt2
		exp_continue
	}
	-re "Unable to allocate resources" {
		log_debug "This error is expected, no worries"
		set alloc_fail 1
	}
	timeout {
		log_error "srun not responding"
		slow_kill $srun_pid
		set exit_code 1
	}
	eof {
		wait
	}
}
if { $alloc_fail == 0 } {
	log_error "Did not generate expected error message"
	set exit_code   1
}
if { $task_cnt2 != 0 } {
	log_error "Allocated more tasks than processors"
	set exit_code   1
}


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

set srun_pid [spawn $srun -N1-1 -l -t1 $bin_printenv SLURM_NODEID]
expect {
	-re "($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 {
		log_error "srun not responding"
		slow_kill $srun_pid
		set exit_code 1
	}
	eof {
		wait
	}
}

#
# Verify node count
#
if {[string compare $host_0 ""] == 0} {
	log_error "Did not get SLURM_NODEID of task 0"
	set exit_code   1
}
if {[string compare $host_1 ""] != 0} {
	log_error "Started two tasks instead of one"
}
if {[test_front_end] != 0} {
	log_warn "Additional testing is incompatible with front-end systems"
	pass
}

#
# Submit a 1 to 3 node job
#
set host_0      ""
set host_1      ""
set host_2      ""
set host_3      ""
set timeout $max_job_delay
set srun_pid [spawn $srun -N1-3 -l -t1 $bin_printenv SLURM_NODEID]
expect {
	-re "($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 {
		log_error "srun not responding"
		slow_kill $srun_pid
		set exit_code 1
	}
	eof {
		wait
	}
}

#
# Verify node count
#
if {[string compare $host_0 ""] == 0} {
	log_error "Did not get SLURM_NODEID of task 0"
	set exit_code   1
}
if {[string compare $host_3 ""] != 0} {
	log_error "Started more than three tasks"
	set exit_code   1
}
set dup_host 0
if {[string compare $host_0 $host_1] == 0} {
	set dup_host 1
}
if {[string compare $host_0 $host_2] == 0} {
	set dup_host 1
}
if {[string compare $host_0 $host_3] == 0} {
	set dup_host 1
}
if {$dup_host == 1} {
	log_error "Re-used a node in the allocation"
	set exit_code   1
}

#
# Submit a 2 to 3 node job
#
set host_0      ""
set host_1      ""
set host_2      ""
set host_3      ""
set timeout $max_job_delay
set srun_pid [spawn $srun -N2-3 -l -t1 $bin_printenv SLURM_NODEID]
expect {
	-re "srun: error" {
		skip "Can't test srun task distribution"
	}
	-re "($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 {
		log_error "srun not responding"
		slow_kill $srun_pid
		set exit_code 1
	}
	eof {
		wait
	}
}

#
# Verify node count
#
if {[string compare $host_0 ""] == 0} {
	log_error "Did not get SLURM_NODEID of task 0"
	set exit_code   1
}
if {[string compare $host_1 ""] == 0} {
	log_error "Did not get SLURM_NODEID of task 1"
	set exit_code   1
}
if {[string compare $host_3 ""] != 0} {
	log_error "Started more than three tasks"
	set exit_code   1
}
set dup_host 0
if {[string compare $host_0 $host_1] == 0} {
	set dup_host 1
}
if {[string compare $host_0 $host_2] == 0} {
	set dup_host 1
}
if {[string compare $host_0 $host_3] == 0} {
	set dup_host 1
}
if {$dup_host == 1} {
	log_error "Re-used a node in the allocation"
	set exit_code   1
}

if {$exit_code != 0} {
	fail "Test failed due to previous errors (\$exit_code = $exit_code)"
}