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var async = require('../lib');
var expect = require('chai').expect;
var assert = require('assert');
describe('retryable', function () {
it('basics', function (done) {
var calls = 0;
var retryableTask = async.retryable(3, function (arg, cb) {
calls++;
expect(arg).to.equal(42);
cb('fail');
});
retryableTask(42, function (err) {
expect(err).to.equal('fail');
expect(calls).to.equal(3);
done();
});
setTimeout(function () {
}, 15);
});
it('should work as an embedded task', function(done) {
var retryResult = 'RETRY';
var fooResults;
var retryResults;
async.auto({
dep: async.constant('dep'),
foo: ['dep', function(results, callback){
fooResults = results;
callback(null, 'FOO');
}],
retry: ['dep', async.retryable(function(results, callback) {
retryResults = results;
callback(null, retryResult);
})]
}, function(err, results){
assert.equal(results.retry, retryResult, "Incorrect result was returned from retry function");
assert.equal(fooResults, retryResults, "Incorrect results were passed to retry function");
done();
});
});
it('should work as an embedded task with interval', function(done) {
var start = new Date().getTime();
var opts = {times: 5, interval: 20};
async.auto({
foo: function(callback){
callback(null, 'FOO');
},
retry: async.retryable(opts, function(callback) {
callback('err');
})
}, function(){
var duration = new Date().getTime() - start;
var expectedMinimumDuration = (opts.times -1) * opts.interval;
assert(duration >= expectedMinimumDuration,
"The duration should have been greater than " +
expectedMinimumDuration + ", but was " + duration);
done();
});
});
});
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