procps/testsuite/vmstat.test/vmstat.exp

#
# Dejagnu tests for vmstat - part of procps

set vmstat "${topdir}src/vmstat"

# Tests that need to see /proc/vmstat
if { [ file readable "/proc/vmstat" ] == 0 } {
    unsupported "vmstat with no arguments - /proc/vmstat is unreadable"
    unsupported "vmstat with -a flag - /proc/vmstat is unreadable"
    unsupported "vmstat fork option - /proc/vmstat is unreadable"
} else {
    set test "vmstat with no arguments"
    spawn $vmstat
    expect_pass "$test" "^procs\[ -\]+memory\[ -\]+swap\[ -\]+io\[ -\]+system\[ -\]+cpu\[ -\]+\\s*r\\s+b\\s+swpd\\s+free\\s+buff\\s+cache\\s+si\\s+so\\s+bi\\s+bo\\s+in\\s+cs us sy id wa st\\s*\(\\s+\\d+\){17}\\s*$"

    set test "vmstat with -a flag"
    spawn $vmstat -a
    expect_pass "$test" "^procs\[ -\]+memory\[ -\]+swap\[ -\]+io\[ -\]+system\[ -\]+cpu\[ -\]+\\s*r\\s+b\\s+swpd\\s+free\\s+inact\\s+active\\s+si\\s+so\\s+bi\\s+bo\\s+in\\s+cs us sy id wa st\\s*\(\\s+\\d+\){17}\\s*$"

    set test "vmstat fork option"
    spawn $vmstat -f
    expect_pass "$test" "^\\s+\\d+ forks\\s*$"
}

if { [ file readable "/proc/slabinfo" ] == 0 } {
    unsupported "slabinfo (-m option) test disabled as /proc/slabinfo is unreadable"
} else {
set test "vmstat slabinfo (-m option)"
spawn $vmstat -m
expect_pass "$test" "^Cache\\s+Num\\s+Total\\s+Size\\s+Pages\\s+\(\\S+\\s+\\d+\\s+\\d+\\s+\\d+\\s+\\d+\\s*\){1,}"
}

set test "vmstat disk information (-d option)"
if { [ file readable "/sys/block" ] == 0 }  {
    unsupported "$test /sys/block not readable"
} else {
    set fp [open /proc/diskstats ]
    if { [ read $fp ] == "" } {
	close $fp
        unsupported "$test /proc/diskstats empty"
    } else {
        close $fp
        spawn $vmstat -d
        expect_pass "$test" "^disk\[ -\]+reads\[ -\]+writes\[ -\]+IO\[ -\]+\\s+total\\s+merged\\s+sectors\\s+ms\\s+total\\s+merged\\s+sectors\\s+ms\\s+cur\\s+sec\\s+"

	# Need a partition
        set diskstats [ exec cat /proc/diskstats ]
        if [ regexp "\\s+\\d+\\s+\\d+\\s+\((?:hd|sd|vd)\[a-z\]\\d+\)\\s+\[0-9\]\[0-9\]+" $diskstats line partition == 1 ] {
            set test "vmstat partition (using $partition)"
            spawn $vmstat -p $partition
            expect_pass "$test" "^${partition}\\s+reads"
        } else {
            unsupported "vmstat partition (cannot find partition)"
        }
    }
}