Use test.assert in casperjs - casperjs

Question

For the casperjs, I have:
var casper = require('casper').create({
loadImages:false,
verbose: true,
logLevel: 'debug',
});
casper.userAgent('Mozilla/5.0 (Macintosh; Intel Mac OS X)');
casper.then(function(){
this.echo('step 1 is finished!^.^');
});
I want use casper.test.assert('Step1 is finished');
When I run the code, I cannot use casperjs myjs.js anymore, because the new version need to use casperjs test yourjs.js. But when I use the new one, still give me the error
You can’t override the preconfigured casper instance in this test environment
So, what show I do?

Answer 1

Do exactly what it says. You cannot create a casper instance when you run casper test myjs.js. It will be injected. Just change
var casper = require('casper').create({
loadImages:false,
verbose: true,
logLevel: 'debug',
});
to
casper.options.loadImages = false;
casper.options.verbose = true;
casper.options.logLevel = 'debug';
and use casper inside of test blocks:
casper.test.begin('some test name', function(test) {
casper.start(url);
casper.then(function() {
test.assert(this.getTitle()!=''); // straight forward
})
casper.run(function() {
test.done();
});
});