CODEWITHSUNDEEP
javascriptnode.jsphantomjscasperjs
Ayhan
Ayhan

Reputation: 183

Passing argument array to CasperJS from node.js

I am using CasperJS to test a website. A part of the test is resource check.

What I want to do:

Pass array or object array to CasperJS and iterate through them. The first step is one array then object array. both have same issue.

Node.js code:

require('child_process').exec('/usr/local/bin/casperjs script.js [url,regex]' , function(err, stdout, stderr) {  
    err && console.log(err);
    stderr && console.log(stderr.toString());
    stdout && console.log(stdout.toString());
})

Casperjs script:

var casper = require('casper').create(),
    a = casper.cli.args[0],
    // we need something here to string to js array
    w=a[0],
    r=a[1];
casper.start(w, function() {
    if (this.resourceExists(r)) {
        console.log("PASS\t" +r+ "\t"+ w);
    } else {
        console.log("FAIL\t" +r+ "\t"+ w);
    }
});
casper.run();

The problem is CasperJS takes args as string.

Upvotes: 0

Views: 1040

Answers (2)

Ayhan
Ayhan

Reputation: 183

Better approach to problem: https://groups.google.com/forum/#!topic/casperjs/bhA81OyHA7s

Passing variables as options. Works like a charm

My Final nodejs:

var exec = require('child_process'),

array = [
    {url:"",regex:""}
];


for (var i = 0; i < array.length; i++) {
    var url = array[i]["url"];
    var regex = array[i]["regex"];
    exec.exec('/usr/local/bin/casperjs casper2.js --url="'+url+'" --regex="'+regex+'" ' , function(err, stdout, stderr) {  
        err && console.log(err);
        stderr && console.log(stderr.toString());
        stdout && console.log(stdout.toString());
    });
};

In CasperJS

w=casper.cli.get("url"),
reg= casper.cli.get("regex"),
rpart = reg.split("/"),
r=new RegExp(rpart[1],rpart[2]);
casper.start(w, function() {
    if (this.resourceExists(r)) {
        console.log("PASS\t" +r+ "\t"+ w);
    } else {
        console.log("FAIL\t" +r+ "\t"+ w);
    }
});

casper.run();

Upvotes: 0

Artjom B.
Artjom B.

Reputation: 61952

When you call it like that:

'/usr/local/bin/casperjs script.js "[\''+yourURL+'\',\''+yourRegex+'\']"'

You could simply use

a = JSON.parse(casper.cli.args[0]),
w = a[0],
r = new RegExp(a[1]);

If casper.cli.args[0] is actually JSON, then it can be parsed as such. resourceExists() takes regular expressions only as RegExp objects.

A better way if the data that you pass gets too long, then you should write the data to a temporary file with node.js' fs module and read it with PhantomJS' fs module, parsing it along the way.

Upvotes: 1

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