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+'use strict';
+
+var expect = require('expect.js');
+var promiseRetry = require('../');
+var promiseDelay = require('sleep-promise');
+
+describe('promise-retry', function () {
+ it('should call fn again if retry was called', function () {
+ var count = 0;
+
+ return promiseRetry(function (retry) {
+ count += 1;
+
+ return promiseDelay(10)
+ .then(function () {
+ if (count <= 2) {
+ retry(new Error('foo'));
+ }
+
+ return 'final';
+ });
+ }, { factor: 1 })
+ .then(function (value) {
+ expect(value).to.be('final');
+ expect(count).to.be(3);
+ }, function () {
+ throw new Error('should not fail');
+ });
+ });
+
+ it('should call fn with the attempt number', function () {
+ var count = 0;
+
+ return promiseRetry(function (retry, number) {
+ count += 1;
+ expect(count).to.equal(number);
+
+ return promiseDelay(10)
+ .then(function () {
+ if (count <= 2) {
+ retry(new Error('foo'));
+ }
+
+ return 'final';
+ });
+ }, { factor: 1 })
+ .then(function (value) {
+ expect(value).to.be('final');
+ expect(count).to.be(3);
+ }, function () {
+ throw new Error('should not fail');
+ });
+ });
+
+ it('should not retry on fulfillment if retry was not called', function () {
+ var count = 0;
+
+ return promiseRetry(function () {
+ count += 1;
+
+ return promiseDelay(10)
+ .then(function () {
+ return 'final';
+ });
+ })
+ .then(function (value) {
+ expect(value).to.be('final');
+ expect(count).to.be(1);
+ }, function () {
+ throw new Error('should not fail');
+ });
+ });
+
+ it('should not retry on rejection if retry was not called', function () {
+ var count = 0;
+
+ return promiseRetry(function () {
+ count += 1;
+
+ return promiseDelay(10)
+ .then(function () {
+ throw new Error('foo');
+ });
+ })
+ .then(function () {
+ throw new Error('should not succeed');
+ }, function (err) {
+ expect(err.message).to.be('foo');
+ expect(count).to.be(1);
+ });
+ });
+
+ it('should not retry on rejection if nr of retries is 0', function () {
+ var count = 0;
+
+ return promiseRetry(function (retry) {
+ count += 1;
+
+ return promiseDelay(10)
+ .then(function () {
+ throw new Error('foo');
+ })
+ .catch(retry);
+ }, { retries : 0 })
+ .then(function () {
+ throw new Error('should not succeed');
+ }, function (err) {
+ expect(err.message).to.be('foo');
+ expect(count).to.be(1);
+ });
+ });
+
+ it('should reject the promise if the retries were exceeded', function () {
+ var count = 0;
+
+ return promiseRetry(function (retry) {
+ count += 1;
+
+ return promiseDelay(10)
+ .then(function () {
+ throw new Error('foo');
+ })
+ .catch(retry);
+ }, { retries: 2, factor: 1 })
+ .then(function () {
+ throw new Error('should not succeed');
+ }, function (err) {
+ expect(err.message).to.be('foo');
+ expect(count).to.be(3);
+ });
+ });
+
+ it('should pass options to the underlying retry module', function () {
+ var count = 0;
+
+ return promiseRetry(function (retry) {
+ return promiseDelay(10)
+ .then(function () {
+ if (count < 2) {
+ count += 1;
+ retry(new Error('foo'));
+ }
+
+ return 'final';
+ });
+ }, { retries: 1, factor: 1 })
+ .then(function () {
+ throw new Error('should not succeed');
+ }, function (err) {
+ expect(err.message).to.be('foo');
+ });
+ });
+
+ it('should convert direct fulfillments into promises', function () {
+ return promiseRetry(function () {
+ return 'final';
+ }, { factor: 1 })
+ .then(function (value) {
+ expect(value).to.be('final');
+ }, function () {
+ throw new Error('should not fail');
+ });
+ });
+
+ it('should convert direct rejections into promises', function () {
+ promiseRetry(function () {
+ throw new Error('foo');
+ }, { retries: 1, factor: 1 })
+ .then(function () {
+ throw new Error('should not succeed');
+ }, function (err) {
+ expect(err.message).to.be('foo');
+ });
+ });
+
+ it('should not crash on undefined rejections', function () {
+ return promiseRetry(function () {
+ throw undefined;
+ }, { retries: 1, factor: 1 })
+ .then(function () {
+ throw new Error('should not succeed');
+ }, function (err) {
+ expect(err).to.be(undefined);
+ })
+ .then(function () {
+ return promiseRetry(function (retry) {
+ retry();
+ }, { retries: 1, factor: 1 });
+ })
+ .then(function () {
+ throw new Error('should not succeed');
+ }, function (err) {
+ expect(err).to.be(undefined);
+ });
+ });
+
+ it('should retry if retry() was called with undefined', function () {
+ var count = 0;
+
+ return promiseRetry(function (retry) {
+ count += 1;
+
+ return promiseDelay(10)
+ .then(function () {
+ if (count <= 2) {
+ retry();
+ }
+
+ return 'final';
+ });
+ }, { factor: 1 })
+ .then(function (value) {
+ expect(value).to.be('final');
+ expect(count).to.be(3);
+ }, function () {
+ throw new Error('should not fail');
+ });
+ });
+
+ it('should work with several retries in the same chain', function () {
+ var count = 0;
+
+ return promiseRetry(function (retry) {
+ count += 1;
+
+ return promiseDelay(10)
+ .then(function () {
+ retry(new Error('foo'));
+ })
+ .catch(function (err) {
+ retry(err);
+ });
+ }, { retries: 1, factor: 1 })
+ .then(function () {
+ throw new Error('should not succeed');
+ }, function (err) {
+ expect(err.message).to.be('foo');
+ expect(count).to.be(2);
+ });
+ });
+
+ it('should allow options to be passed first', function () {
+ var count = 0;
+
+ return promiseRetry({ factor: 1 }, function (retry) {
+ count += 1;
+
+ return promiseDelay(10)
+ .then(function () {
+ if (count <= 2) {
+ retry(new Error('foo'));
+ }
+
+ return 'final';
+ });
+ }).then(function (value) {
+ expect(value).to.be('final');
+ expect(count).to.be(3);
+ }, function () {
+ throw new Error('should not fail');
+ });
+ });
+});