curator/test/system/procPoller-test.js

A flexible process monitoring and management framework.

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