| 1 |
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| 2 | describe('ware', function () {
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| 3 |
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| 4 | var assert = require('assert');
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| 5 | var noop = function(){};
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| 6 | var ware = require('..');
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| 7 |
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| 8 | describe('#use', function () {
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| 9 | it('should be chainable', function () {
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| 10 | var w = ware();
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| 11 | assert(w.use(noop) == w);
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| 12 | });
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| 13 |
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| 14 | it('should add a middleware to fns', function () {
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| 15 | var w = ware().use(noop);
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| 16 | assert(1 == w.fns.length);
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| 17 | });
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| 18 |
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| 19 | it('should accept an array of middleware', function () {
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| 20 | var w = ware().use([noop, noop]);
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| 21 | assert(2 == w.fns.length);
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| 22 | });
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| 23 |
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| 24 | it('should accept a Ware instance', function () {
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| 25 | var o = ware().use(noop).use(noop);
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| 26 | var w = ware().use(o);
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| 27 | assert(2 == w.fns.length);
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| 28 | });
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| 29 |
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| 30 | it('should accept an array of Ware instances', function() {
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| 31 | var a = ware().use(noop).use(noop);
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| 32 | var b = ware().use(noop).use(noop);
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| 33 | var w = ware([a, b]);
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| 34 | assert(4 == w.fns.length);
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| 35 | })
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| 36 |
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| 37 | it('should accept middleware on construct', function () {
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| 38 | var w = ware(noop);
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| 39 | assert(1 == w.fns.length);
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| 40 | });
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| 41 | });
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| 42 |
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| 43 | describe('#run', function () {
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| 44 | describe('async', function() {
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| 45 | it('should receive an error', function (done) {
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| 46 | var error = new Error();
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| 47 | ware()
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| 48 | .use(function (next) { next(error); })
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| 49 | .run(function (err) {
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| 50 | assert(err == error);
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| 51 | done();
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| 52 | });
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| 53 | });
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| 54 |
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| 55 | it('should receive initial arguments', function (done) {
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| 56 | ware()
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| 57 | .use(function (req, res, next) { next(); })
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| 58 | .run('req', 'res', function (err, req, res) {
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| 59 | assert(!err);
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| 60 | assert('req' == req);
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| 61 | assert('res' == res);
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| 62 | done();
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| 63 | });
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| 64 | });
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| 65 |
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| 66 | it('should take any number of arguments', function (done) {
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| 67 | ware()
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| 68 | .use(function (a, b, c, next) { next(); })
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| 69 | .run('a', 'b', 'c', function (err, a, b, c) {
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| 70 | assert(!err);
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| 71 | assert('a' == a);
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| 72 | assert('b' == b);
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| 73 | assert('c' == c);
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| 74 | done();
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| 75 | });
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| 76 | });
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| 77 |
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| 78 | it('should let middleware manipulate the same input objects', function (done) {
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| 79 | ware()
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| 80 | .use(function (obj, next) {
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| 81 | obj.value = obj.value * 2;
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| 82 | next();
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| 83 | })
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| 84 | .use(function (obj, next) {
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| 85 | obj.value = obj.value.toString();
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| 86 | next();
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| 87 | })
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| 88 | .run({ value: 21 }, function (err, obj) {
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| 89 | assert('42' == obj.value);
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| 90 | done();
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| 91 | });
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| 92 | });
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| 93 |
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| 94 | it('should jump to done on error', function (done) {
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| 95 | var errors = 0;
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| 96 | ware()
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| 97 | .use(function (next) { next(new Error()); })
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| 98 | .use(function (next) { errors++; next(err); })
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| 99 | .use(function (next) { errors++; next(err); })
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| 100 | .run(function (err) {
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| 101 | assert(err);
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| 102 | assert(0 == errors);
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| 103 | done();
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| 104 | });
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| 105 | });
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| 106 |
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| 107 | it('should not require a callback', function (done) {
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| 108 | ware()
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| 109 | .use(function (obj, next) { assert(obj); next(); })
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| 110 | .use(function (obj, next) { done(); })
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| 111 | .run('obj');
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| 112 | });
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| 113 | });
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| 114 |
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| 115 | describe('sync', function() {
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| 116 | it('should receive an error', function (done) {
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| 117 | var error = new Error();
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| 118 | ware()
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| 119 | .use(function () { return error; })
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| 120 | .run(function (err) {
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| 121 | assert(err == error);
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| 122 | done();
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| 123 | });
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| 124 | });
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| 125 |
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| 126 | it('should catch an error', function (done) {
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| 127 | var error = new Error();
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| 128 | ware()
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| 129 | .use(function () { throw error; })
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| 130 | .run(function (err) {
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| 131 | assert(err === error);
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| 132 | done();
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| 133 | });
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| 134 | });
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| 135 |
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| 136 | it('should receive initial arguments', function (done) {
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| 137 | ware()
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| 138 | .use(function (req, res) { return; })
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| 139 | .run('req', 'res', function (err, req, res) {
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| 140 | assert(!err);
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| 141 | assert('req' == req);
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| 142 | assert('res' == res);
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| 143 | done();
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| 144 | });
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| 145 | });
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| 146 |
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| 147 | it('should take any number of arguments', function (done) {
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| 148 | ware()
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| 149 | .use(function (a, b, c) { })
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| 150 | .run('a', 'b', 'c', function (err, a, b, c) {
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| 151 | assert(!err);
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| 152 | assert('a' == a);
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| 153 | assert('b' == b);
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| 154 | assert('c' == c);
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| 155 | done();
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| 156 | });
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| 157 | });
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| 158 |
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| 159 | it('should let middleware manipulate the same input objects', function (done) {
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| 160 | ware()
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| 161 | .use(function (obj) {
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| 162 | obj.value = obj.value * 2;
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| 163 | })
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| 164 | .use(function (obj) {
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| 165 | obj.value = obj.value.toString();
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| 166 | })
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| 167 | .run({ value: 21 }, function (err, obj) {
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| 168 | assert(!err);
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| 169 | assert('42' == obj.value);
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| 170 | done();
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| 171 | });
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| 172 | });
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| 173 |
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| 174 |
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| 175 | it('should skip middleware on error', function (done) {
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| 176 | var errors = 0;
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| 177 | ware()
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| 178 | .use(function () { return new Error(); })
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| 179 | .use(function (next) { errors++; next(err); })
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| 180 | .use(function (next) { errors++; next(err); })
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| 181 | .run(function (err) {
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| 182 | assert(err);
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| 183 | assert(0 == errors);
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| 184 | done();
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| 185 | });
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| 186 | });
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| 187 |
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| 188 | it('should not require a callback', function (done) {
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| 189 | ware()
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| 190 | .use(function (obj) { assert(obj); })
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| 191 | .use(function (obj) { done(); })
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| 192 | .run('obj');
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| 193 | });
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| 194 |
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| 195 | it('should support promises', function (done) {
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| 196 | ware()
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| 197 | .use(function () {
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| 198 | return {
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| 199 | then: function (resolve) { resolve(10); }
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| 200 | };
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| 201 | })
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| 202 | .run(done);
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| 203 | });
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| 204 |
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| 205 | it('should skip middleware on promise error', function (done) {
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| 206 | var errors = 0;
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| 207 | ware()
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| 208 | .use(function () {
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| 209 | return {
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| 210 | then: function (resolve, reject) { reject(new Error()); }
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| 211 | };
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| 212 | })
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| 213 | .use(function (next) { errors++; next(err); })
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| 214 | .use(function (next) { errors++; next(err); })
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| 215 | .run(function (err) {
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| 216 | assert(err);
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| 217 | assert(0 == errors);
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| 218 | done();
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| 219 | });
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| 220 | });
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| 221 | })
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| 222 |
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| 223 | describe('generator', function() {
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| 224 | it('should receive an error', function (done) {
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| 225 | var error = new Error();
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| 226 | ware()
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| 227 | .use(function *() { throw error; })
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| 228 | .run(function (err) {
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| 229 | assert(err == error);
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| 230 | done();
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| 231 | });
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| 232 | });
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| 233 |
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| 234 | it('should receive initial arguments', function (done) {
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| 235 | ware()
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| 236 | .use(function *(req, res) { })
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| 237 | .run('req', 'res', function (err, req, res) {
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| 238 | assert(!err);
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| 239 | assert('req' == req);
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| 240 | assert('res' == res);
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| 241 | done();
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| 242 | });
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| 243 | });
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| 244 |
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| 245 | it('should take any number of arguments', function (done) {
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| 246 | ware()
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| 247 | .use(function *(a, b, c) { })
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| 248 | .run('a', 'b', 'c', function (err, a, b, c) {
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| 249 | assert(!err);
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| 250 | assert('a' == a);
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| 251 | assert('b' == b);
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| 252 | assert('c' == c);
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| 253 | done();
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| 254 | });
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| 255 | });
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| 256 |
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| 257 | it('should let middleware manipulate the same input objects', function (done) {
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| 258 | ware()
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| 259 | .use(function *(obj) {
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| 260 | obj.value = obj.value * 2;
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| 261 | })
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| 262 | .use(function *(obj) {
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| 263 | obj.value = obj.value.toString();
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| 264 | })
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| 265 | .run({ value: 21 }, function (err, obj) {
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| 266 | assert('42' == obj.value);
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| 267 | done();
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| 268 | });
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| 269 | });
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| 270 |
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| 271 | it('should wait for the gen to finish', function(done) {
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| 272 | ware()
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| 273 | .use(function *(a, b, c) {
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| 274 | yield wait(100);
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| 275 | })
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| 276 | .run('a', 'b', 'c', function (err, a, b, c) {
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| 277 | assert(!err);
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| 278 | assert('a' == a);
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| 279 | assert('b' == b);
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| 280 | assert('c' == c);
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| 281 | done();
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| 282 | });
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| 283 | })
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| 284 |
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| 285 | it('should jump to done on error', function (done) {
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| 286 | var errors = 0;
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| 287 | ware()
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| 288 | .use(function *() { throw new Error(); })
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| 289 | .use(function *() { errors++; })
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| 290 | .use(function *() { errors++; })
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| 291 | .run(function (err) {
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| 292 | assert(err);
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| 293 | assert(0 == errors);
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| 294 | done();
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| 295 | });
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| 296 | });
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| 297 |
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| 298 | it('should not require a callback', function (done) {
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| 299 | ware()
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| 300 | .use(function *(obj) { assert(obj); })
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| 301 | .use(function *(obj) { done(); })
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| 302 | .run('obj');
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| 303 | });
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| 304 | });
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| 305 | });
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| 306 | });
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| 307 |
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| 308 | function wait(ms) {
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| 309 | return function(fn) {
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| 310 | setTimeout(fn, ms);
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| 311 | }
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| 312 | }
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