datafixture.js

Generates random data based on a defined template model.

jsfiddle example implementing all of its features:

http://jsfiddle.net/acatl/fmvEj/

Jasmine tests results

http://jsfiddle.net/acatl/D2vmE/embedded/result/

Method: DataFixture.generate

DataFixture.generate(templateObject, numberOfResults);

templateObject can be a string with patterns or an object with at least one property.

numberOfResults optional, is the number of results we want to be generated, if numberOfResults is == 0 it outputs an object. if > 0 it outputs an array of objects.

Generate an object with a randomly set numeric property

var template = {
	like: "0...100" /* generate a number between 0 an 100, with no decimals */
};
DataFixture.generate(template, 0);

// possible output
{
	like: 23
}

Generate an Array with a randomly set numeric property

var template = {
	like: "0...100" /* generate a number between 0 an 100, with no decimals */
};
DataFixture.generate(template, 20); /* second parameter indicates the number of elements */

// possible output
[
	{like: 23},
	{like: 3},
	{like: 2},
	{like: 22},
	{like: 10},
	...
]

Generate numbers with decimals

var template = {
	like: "0...100:2" /* generate a number between 0 an 100, with 2 decimals */
};
DataFixture.generate(template, 0);

// possible output
{
	like: 12.69
}

Generate a string from a defined set of values

var template = {
	names: ["Ian","Polo", "Oscar", "Fabien", "Rafael"] /* Create string with any of the values from the array */
};
DataFixture.generate(template, 0);

// possible output
{
	names: "Rafael"
}

Generate a string from a defined set of values with mixed types

var template = {
	names: ["Ian",2, 10.4, true, "Andros"] /* Create string with any of the values from the array */
};
DataFixture.generate(template, 0);

// possible output
{
	names: 10.4
}

One level template

var template = {
	score: "0...100:2" /* generate a number between 0 an 100, with 2 decimals */
	names: ["Paula", "Darek", "Ian", "Monica", "Andros", "Kenji"] /* Create string with any of the values from the array */
};
DataFixture.generate(template, 6);

// possible output
[
	{score: 45.67,	names: "Andros"},
	{score: 5.73,	names: "Ian"},
	{score: 34.45,	names: "Paula"},
	{score: 53.76,	names: "Darek"},
	{score: 99.28,	names: "Monica"},
	{score: 0.12,	names: "Kenji"}
]

Nested levels template

var template = {
	values: "0...100:2", 
	names: ["Ian",2, 10.4, true, "Andros"], 
	complex: {
		PO:"20000...30000",
		country: ["Mexico", "Canada", "US"]
	}
};
DataFixture.generate(template, 0);

// possible output
{
	names: 10.4,
	values: 13.78,
	complex: {
		PO: 27882,
		country: "Canada"
	}
}

Nested template with more than one result

var template = {
	values: "0...100:2", 
	names: ["Ian",2, 10.4, true, "Andros"], 
	complex: {
        // '#' is a reserved property name, indicates number of instances
		'#': '1...3', // this will generate from 1 to 3 array elements
		PO:"20000...30000",
		country: ["Mexico", "Canada", "US"]
	}
};
DataFixture.generate(template, 0);

// possible output
{ values: 97.62,
  names: 10.4,
  complex: 
   [ { PO: 22468, country: 'US' },
     { PO: 27431, country: 'Canada' },
     { PO: 20893, country: 'Canada' },
     { PO: 25644, country: 'Canada' } ] 
}

Values of properties can also be functions

var df = DataFixture.generate({
	coordinates:function(){
		return DataFixture.getRandom(0,30) + ":" + DataFixture.getRandom(0,15);
	}
},10);

// possible output
[ { coordinates: '15:7' },
  { coordinates: '14:11' },
  { coordinates: '19:15' },
  { coordinates: '15:9' },
  { coordinates: '17:2' },
  { coordinates: '25:3' },
  { coordinates: '4:1' },
  { coordinates: '12:9' },
  { coordinates: '15:2' },
  { coordinates: '7:8' } ]

Create Lorem Ipsum paragraphs with random lengths

var x = DataFixture.generate({
	// you may define the range of possible words to use
	// this case: from 1 to 3 words, if omitted it will by default "1...10"
	"lorem": "lorem:1...3"
}, 10);

//output
[ { lorem: 'Lorem' },
  { lorem: 'Lorem ipsum' },
  { lorem: 'Lorem ipsum' },
  { lorem: 'Lorem ipsum' },
  { lorem: 'Lorem ipsum dolor' },
  { lorem: 'Lorem ipsum' },
  { lorem: 'Lorem' },
  { lorem: 'Lorem ipsum dolor' },
  { lorem: 'Lorem' },
  { lorem: 'Lorem ipsum' } ]

Multiple values on a string

note: currently only support string, lorem, or numeric ranges

var x = DataFixture.generate({
    // use pipes | to separate each value
    "time": "1...24|:|0...59|:|0...59"
}, 10);

//output
[ { time: '15:53:36' },
  { time: '13:54:7' },
  { time: '4:37:46' }
]

Array Values may also be objects

Array values may also have objects in them, object's properties may also have parsable values.

var x = DataFixture.generate({
    item: [
        "1...4",
        "lorem:1...3",
        { type: "ad" },
        { type: "video", "url":"http://some.domain.com/videos/?id=|GUID"}
    ]
}, 5);

//output
[ 
    {
        "item": 2
    },
    {
        "item": "nunc nec accumsan"
    },
    {
        "item": "porttitor bibendum"
    },
    {
        "item": {
            "type": "ad"
        }
    },
    {
        "item": {
            "type": "video",
            "url": "http://some.domain.com/videos/?id=168f5078-0eda-b021-fc93-c621a26a4e2e"
        }
    }
]

enjoy!

All feedback is welcomed