Preem NPM | npm.io

preem

Lightweight, easy-to-use JavaScript test library

Usage

Using browser

<script src="https://cdn.rawgit.com/shaikezam/preem/master/preem_browser.js"></script>

Using NPM

Install preem:

npm install preem

Requirening and using:

"use strict";
    
let Preem = require('preem');

let preem = new Preem();

Preem Capabilities

DOM elements manipulations

With Preem, user can search or make actions on DOM elements with simple, intuitive and easy to understand API.

Network Manager

No need an available server when running tests. With Preem user can record and play the requests and responses to\from the server using the integrated Network Manager. In the Preem constructure, user need to pass the path of the data.json file. This fils contains all requests and responses in JSON format. In the begging of the test, Preem try to find the data.json file:

If found - no request will sent to the server, all load from the file.
Else - all requests will send to the server and when the test will finish, a data.json file will be downloaded.

Reports downloading

With Preem, user can download test reports with the following formats (via the constructure):

Preem.CONSTANTS.DOWNLAODFORMAT.JSON - "JSON"
Preem.CONSTANTS.DOWNLAODFORMAT.XML - "XML" In the future, HTML format will be available.

API

Preem constructor

Preem constructor parameters:

"use strict";

let preem = new Preem({
    networkManager: {
        appPath: //path of the application starting page (probably at '/')
        data: //path of the data file that contains the requests and responses to the server
    },
    downloadReport: {
        format: //Preem.CONSTANTS.DOWNLAODFORMAT.XML or Preem.CONSTANTS.DOWNLAODFORMAT.JSON
    },
    title: //title of the test
    onStart: function () {
        //callback function, fires before starting the test, default null
    },
    onFinish: function () {
        //callback function, fires after finishing the test, default null
    }
});

Preem constructor for example:

"use strict";

let preem = new Preem({ 
    networkManager: {
        appPath: "/",
        data: "data/data.json"
    },
    downloadReport: {
        format: Preem.CONSTANTS.DOWNLAODFORMAT.XML
    },
    title: "Preem demonstration",
    onStart: function () {
        console.log("***TESTS STARTED***");
    },
    onFinish: function () {
        console.log("***TESTS FINISHED***");
    }
});

testModule function:

Function for creating tests that have a common topic

"use strict";

preem.testModule(/* test module description */, function (beforeEach, when, then) {

    
});

testModule for exaxmple:

"use strict";

preem.testModule("Test contacts list", function (beforeEach, when, then) {

    beforeEach(function () {
        console.log("Before each checkIf");
    });

    when().iCanSeeElement({
        el: function (app) {
            return app.document.getElementById('main-panel');
        }
    }, "Can see the main panel", "Can't see the main panel");

    then().iCanSeeElement({
        el: function (app) {
            return app.$('#contacts-list')[0];
        },
        action: Preem.CONSTANTS.ACTIONS.CLICK
    }, "can see the main panel", "can't see the main panel");
    
    when().iCanSeeElement({
        el: {
            id: "main-panel",
            class: "btn btn-primary",
            tag: "div"
        }

    }, "Can see the main panel", "Can't see the main panel");

    then().iCanSeeElement({
        el: function (app) {
            return app.$('#contacts-list')[0];
        },
        action: Preem.CONSTANTS.ACTIONS.TYPE,
        text: "A text to be typed in input fields"
    }, "can see the main panel", "can't see the main panel");
    
});

beforeEach: receives a callback function that can perform operations before each when, then functions

when \ then: function to perform manipulations on DOM elements, need to called to iCanSeeElement that receives:

el - can be function or element:
- function - receives as parameter app that can serach for element via jQuery or with the document global object.
- object - receives three parameters: id, class and tag for searching and element in the DOM
action - mostley need to be in the then function (for better TDD), receives constants's Preem actions (more will come in future):
- Preem.CONSTANTS.ACTIONS.CLICK
- Preem.CONSTANTS.ACTIONS.PRESS
- Preem.CONSTANTS.ACTIONS.TYPE

start function:

"use strict";

preem.start();

Function for starting the test - need to be called after writing all the tests

Examples

All tests need to run via HTML page

<!doctype html>

<html lang="en">

    <head>
        <meta charset="utf-8">

        <title>PreemJS</title>
        
        <script src="https://cdn.rawgit.com/shaikezam/preem/master/preem_browser.js"></script> 
        <script src="test.js"></script>

    </head>

    <body>
    </body>
    
    
</html>

Please look at Contacts Application test.

Stay tuned for more updates soon