Generate dynamic tests based on a parameter in Nightwatch - testing

Question

I'm using NightwatchJS to automate the test on our reporting website.
This is my actual code:
module.exports = {
'#tags': ['Report 1','base','full'],
'Report 1' : function (browser) {
checkAnalisi(browser, 'report1', 1, 2015, '767.507')
}
};
function checkAnalisi(browser, nomeAnalisi, scheda, year, risultatoAtteso){
return browser
.url('https://example.com/Wizard?analisi=' + nomeAnalisi)
.waitForElementVisible('body', 5000)
.selectScheda(scheda-1) //Seleziona la scheda (0-based)
.selectPromptValue('Year', year)
.selectRappresentazione('Table')
.waitForElementVisible('table', 5000, true)
.assert.containsText('table tr:last-child td:last-child', risultatoAtteso)
.end();
}
I made some helper commands to select different things in the page:
.selectScheda(scheda-1)
.selectPromptValue('Year', year)
.selectRappresentazione('Table')
selectPromptValue wants a prompt name and the value to set it in the page.
For now the function only sets the year parameter but in my reports I also have different parameters.
What I want to do is to pass an object to the checkAnalisi function to dynamically generate test. For example if I want to set different prompt values I want to pass something like [['Year', 2015],['Another prompt','another value']] and the checkAnalisi function should add 2 .selectPromptValue steps with the respective values.
Is it possible to cycle an input array in my function to add more steps?

Answer 1

Actually I was able to solve this easily directly in my selectPromptValue custom command.
I simply added the new parameter to the checkAnalisi function like this (promptValues is the new parameter):
function checkAnalisi(browser, nomeAnalisi, scheda, promptValues, risultatoAtteso){
return browser
.url('https://example.com/Wizard?analisi=' + nomeAnalisi)
.waitForElementVisible('body', 5000)
.selectScheda(scheda-1) //Seleziona la scheda (0-based)
.selectPromptValue(promptValues)
.selectRappresentazione('Table')
.waitForElementVisible('table', 5000, true)
.assert.containsText('table tr:last-child td:last-child', risultatoAtteso)
.end();
}
I then modified the selectPromptValue.js custom command like this:
exports.command = function(v) {
for(var i=0; i<v.length; i++){
this.execute('$("#"+$("label:visible:contains(\'' + v[i][0] + '\')").attr("for")).val("' + v[i][1] + '")');
}
return this;
};