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April 20, 2010

Presentation at XP Goa day

Narayan Raman presented on Functional Testing of Web Applications using Sahi at the XP Goa Day in Goa University.

Goa XP day

View more presentations from narayanraman.

As part of a presentation , we did a small demo on record and playback of a script using Sahi, then refactored the code to be maintainable.

The site under test is available here: /demo/training
The first cut from the recorder came out to be this:

_setValue(_textbox("user"), "test");
_setValue(_password("password"), "secret");
_setValue(_textbox("q"), "2");
_setValue(_textbox("q[1]"), "1");
_setValue(_textbox("q[2]"), "1");
_assertEqual("1150", _textbox("total").value);

This was then refactored into 2 scripts, one containing functions and the other invoking it:

// goa3_included.sah
function login($username, $password){
_setValue(_textbox("user"), $username);
_setValue(_password("password"), $password);

function addBooks($numJava, $numRuby, $numPython){
_setValue(_textbox("q"), $numJava);
_setValue(_textbox("q[1]"), $numRuby);
_setValue(_textbox("q[2]"), $numPython);

function verifyTotal($total){
_assertEqual($total, _textbox("total").value);

function logout(){
_click(_button("Logout"));}// goa3.sah

login("test", "secret");
addBooks(2, 1, 1);

The next step was to modifyfunction addBooks($numJava, $numRuby, $numPython){

_setValue(_textbox("q"), $numJava);
_setValue(_textbox("q[1]"), $numRuby);

_setValue(_textbox("q[2]"), $numPython);

}such that identifiers "q", "q[1]" and "q[2]" become more meaningful and are independent of their order. Using the _near API, the function becomes:

function addBooks($numJava, $numRuby, $numPython){
_setValue(_textbox("q", _near(_cell("Core Java"))), $numJava);
_setValue(_textbox("q", _near(_cell("Ruby for Rails"))), $numRuby);
_setValue(_textbox("q", _near(_cell("Python Cookbook"))), $numPython);

}We then data drive the whole test by wrapping the various steps into a single function "addAndVerify", build a 2 dimensional array of values and then invoke "addAndVerify" for each row of values using _dataDrive

// club the functionality into a single function
function addAndVerify($numJava, $numRuby, $numPython, $total){
login("test", "secret");
addBooks($numJava, $numRuby, $numPython);

// build a 2D array
var $data = [
[2, 1, 1, 1150],
[3, 2, 1, 1650],
[1, 1, 1, 850]

// automatically invoke addAndVerify for each row in $data.
_dataDrive(addAndVerify, $data);

We concluded the talk with an enthusiastic Q & A session.
Thank you Goa University for being a great host!

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