Test your JSON output with JSON tests using JSON rules resulting in JSON output, which can then be tested with more JSON.
If you haven't used grunt before, be sure to check out the Getting Started guide, as it explains how to create a gruntfile as well as install and use Grunt plugins. Once you're familiar with that process, install this plugin with this command:
$ npm install jsontest --save-devOnce the plugin has been installed, it may be enabled inside your Gruntfile with this line of JavaScript:
grunt.loadNpmTasks('jsontest');Tip: the load-grunt-tasks module makes it easier to load multiple grunt tasks.
jsontest provides several powerful means of writing a particular assertion. There may be some overlap in what's available to validate a value against. Use whichever means makes most sense for your application.
A target can assert with a JSON object assigned to the rules property. This allows one to write assertion validation rules using the iz library's JSON interface. Some validators it supports are listed here:
| Method | Function |
|---|---|
| alphaNumeric(*); | Is number or string(contains only numbers or strings) |
| between(number, start, end); | Number is start or greater but less than or equal to end, all params numeric |
| blank(*); | Empty string |
| boolean(*); | true, false, 0, 1 |
| cc(*); | Luhn checksum approved value |
| date(*); | Is a date obj or is a string that is easily converted to a date |
| decimal(*); | int or float |
| email(*); | Seems like a valid email address |
| empty(*); | If an object, array or function contains no properties true. All primitives return true. |
| equal(*, *); | Any 2 things are strictly equal. If 2 objects their internal properties will be checked. If the first parameter has an equals method that will be run instead |
| extension(ob1, ob2); | If obj2's methods are all found in obj1 |
| fileExtension(value, arr); | Checks if the extension of value is in arr. An obj can be provide, but must have indexOf defined. |
| fileExtensionAudio(value); | Check against mp3, ogg, wav, aac |
| fileExtensionImage(value); | Check against png, jpg, jpeg, gif, bmp, svg, gif |
| inArray(value, arr); | If * is in the array |
| int(*, bool (optional)); | Is an int. If the 2nd variable is true (false by default) a decimal is allowed |
| ip(str); | str resembles an IPV4 or IPV6 address |
| minLength(val, min); | val (str or arr) is greater than min |
| maxLength(val, max); | val (str or arr) is shorter than max |
| multiple(num, mult); | Number is multiple of another number |
| number(*); | Is either an int or decimal |
| ofType(obj, typeName); | If it is a named object, and the name matches the string |
| phone(str, canHaveExtension?); | Is an american phone number. Any punctuations are allowed. |
| postal(*); | Is a postal code or zip code |
| required(*); | Is not null, undefined or an empty string |
| ssn(*); | Is a social security number |
| string(*); | Is the argument of type string |
It's also possible to use an inequality or other mathematical expression that is evaluated using a string in the Math.js expression format. As long as the value is included as part of the expression, it can be used with numbers declared within that expression.
For example:
"length": "val > 0"