curator/src/test/system/procPoller-test.coffee

A flexible process monitoring and management framework.

vows = require 'vows'
assert = require 'assert'

procPoller = require 'curator/lib/system/procPoller'

vows
  .describe('system/procPoller')
  .addBatch
    'The procPoller':
      topic: -> procPoller
      'has a poll function': ->
        assert.isFunction procPoller.poll
      'after called with this.process\' pid':
        topic: ->
          procPoller.poll process.pid, @callback
        'return no error, and a valid stat': (err, stat) ->
          assert.isNull err
          assert.isObject stat
        'returned stat is not empty': (err, stat) ->
          assert.isNotZero stat
        'returned stat has a mem close to node\'s `memoryUsage().rss`': (err, stat) ->
          mem = process.memoryUsage().rss / 1024
          value = Math.abs(mem - stat.mem) / mem
          bool = value < 0.08
          unless bool
            console.log ''
            console.log 'Fail stats:'
            console.log "mem: #{mem}; stat.mem: #{stat.mem}"
            console.log "Math.abs(mem - stat.mem) / mem : #{value}"
          assert.isTrue bool
        'returned stat has correct pmem': (err, stat) ->
          assert.isTrue stat.pmem > 0
        'returned stat has correct pcpu': (err, stat) ->
          assert.isTrue stat.pcpu > 0
  .export module