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var async = require('../lib');
var expect = require('chai').expect;
var assert = require('assert');
describe('whilst', function(){
it('whilst', function(done) {
var call_order = [];
var count = 0;
async.whilst(
function (c) {
expect(c).to.equal(undefined);
call_order.push(['test', count]);
return (count < 5);
},
function (cb) {
call_order.push(['iteratee', count]);
count++;
cb(null, count);
},
function (err, result) {
assert(err === null, err + " passed instead of 'null'");
expect(result).to.equal(5, 'last result passed through');
expect(call_order).to.eql([
['test', 0],
['iteratee', 0], ['test', 1],
['iteratee', 1], ['test', 2],
['iteratee', 2], ['test', 3],
['iteratee', 3], ['test', 4],
['iteratee', 4], ['test', 5],
]);
expect(count).to.equal(5);
done();
}
);
});
it('whilst optional callback', function(done) {
var counter = 0;
async.whilst(
function () { return counter < 2; },
function (cb) {
counter++;
cb();
}
);
expect(counter).to.equal(2);
done();
});
it('doWhilst', function(done) {
var call_order = [];
var count = 0;
async.doWhilst(
function (cb) {
call_order.push(['iteratee', count]);
count++;
cb(null, count);
},
function (c) {
expect(c).to.equal(count);
call_order.push(['test', count]);
return (count < 5);
},
function (err, result) {
assert(err === null, err + " passed instead of 'null'");
expect(result).to.equal(5, 'last result passed through');
expect(call_order).to.eql([
['iteratee', 0], ['test', 1],
['iteratee', 1], ['test', 2],
['iteratee', 2], ['test', 3],
['iteratee', 3], ['test', 4],
['iteratee', 4], ['test', 5]
]);
expect(count).to.equal(5);
done();
}
);
});
it('doWhilst callback params', function(done) {
var call_order = [];
var count = 0;
async.doWhilst(
function (cb) {
call_order.push(['iteratee', count]);
count++;
cb(null, count);
},
function (c) {
call_order.push(['test', c]);
return (c < 5);
},
function (err, result) {
if (err) throw err;
expect(result).to.equal(5, 'last result passed through');
expect(call_order).to.eql([
['iteratee', 0], ['test', 1],
['iteratee', 1], ['test', 2],
['iteratee', 2], ['test', 3],
['iteratee', 3], ['test', 4],
['iteratee', 4], ['test', 5]
]);
expect(count).to.equal(5);
done();
}
);
});
it('doWhilst - error', function(done) {
var error = new Error('asdas');
async.doWhilst(
function (cb) {
cb(error);
},
function () {},
function (err) {
expect(err).to.equal(error);
done();
}
);
});
});
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