procps/testsuite/vmstat.test/vmstat.exp

#
# Dejagnu tests for vmstat - part of procps

set vmstat "${topdir}vmstat"

# Run vmstat with no arguments
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+\(\[\(\)A-Za-z0-9_-\]+\\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 {
    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 { [ file readable "/sys/block" ] == 0 }  {
    unsupported "vmstat partition /sys/block not readable"
} else {
  if [ regexp "\\s+\\d+\\s+\\d+\\s+\(\[a-z\]+\\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)"
  }
}