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var async = require('../lib');
var {expect} = require('chai');
var assert = require('assert');
describe('retryable', () => {
it('basics', (done) => {
var calls = 0;
var retryableTask = async.retryable(3, (arg, cb) => {
calls++;
expect(arg).to.equal(42);
cb('fail');
});
retryableTask(42, (err) => {
expect(err).to.equal('fail');
expect(calls).to.equal(3);
done();
});
});
it('basics with error test function', (done) => {
var calls = 0;
var special = 'special';
var opts = {
errorFilter(err) {
return err == special;
}
};
var retryableTask = async.retryable(opts, (arg, cb) => {
calls++;
expect(arg).to.equal(42);
cb(calls === 3 ? 'fail' : special);
});
retryableTask(42, (err) => {
expect(err).to.equal('fail');
expect(calls).to.equal(3);
done();
});
});
it('should work as an embedded task', (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((results, callback) => {
retryResults = results;
callback(null, retryResult);
})]
}, (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', (done) => {
var start = new Date().getTime();
var opts = {times: 5, interval: 20};
async.auto({
foo(callback){
callback(null, 'FOO');
},
retry: async.retryable(opts, (callback) => {
callback('err');
})
}, () => {
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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