fix tests

src/apphealthmonitor.js

@@ -6,6 +6,7 @@ const appdb = require('./appdb.js'),
     async = require('async'),
     auditSource = require('./auditsource.js'),
     BoxError = require('./boxerror.js'),
+    constants = require('./constants.js'),
     debug = require('debug')('box:apphealthmonitor'),
     docker = require('./docker.js'),
     eventlog = require('./eventlog.js'),
@@ -187,6 +188,8 @@ function run(intervalSecs, callback) {
     assert.strictEqual(typeof intervalSecs, 'number');
     assert.strictEqual(typeof callback, 'function');
 
+    if (constants.TEST) return;
+
     if (!gStartTime) gStartTime = new Date();
 
     async.series([