File: test-domain.js

package info (click to toggle)
nodejs 0.10.29~dfsg-2
  • links: PTS, VCS
  • area: main
  • in suites: jessie, jessie-kfreebsd
  • size: 32,760 kB
  • ctags: 58,506
  • sloc: cpp: 330,356; ansic: 47,440; python: 12,756; sh: 1,365; makefile: 665; lisp: 222; ruby: 76; xml: 16; awk: 10
file content (263 lines) | stat: -rw-r--r-- 7,341 bytes parent folder | download | duplicates (2)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.


// Simple tests of most basic domain functionality.

var common = require('../common');
var assert = require('assert');
var domain = require('domain');
var events = require('events');
var fs = require('fs');
var caught = 0;
var expectCaught = 0;

var d = new domain.Domain();
var e = new events.EventEmitter();

d.on('error', function(er) {
  console.error('caught', er && (er.message || er));

  var er_message = er.message;
  var er_path = er.path

  // On windows, error messages can contain full path names. If this is the
  // case, remove the directory part.
  if (typeof er_path === 'string') {
    var slash = er_path.lastIndexOf('\\');
    if (slash !== -1) {
      var dir = er_path.slice(0, slash + 1);
      er_path = er_path.replace(dir, '');
      er_message = er_message.replace(dir, '');
    }
  }

  switch (er_message) {
    case 'emitted':
      assert.equal(er.domain, d);
      assert.equal(er.domainEmitter, e);
      assert.equal(er.domainThrown, false);
      break;

    case 'bound':
      assert.ok(!er.domainEmitter);
      assert.equal(er.domain, d);
      assert.equal(er.domainBound, fn);
      assert.equal(er.domainThrown, false);
      break;

    case 'thrown':
      assert.ok(!er.domainEmitter);
      assert.equal(er.domain, d);
      assert.equal(er.domainThrown, true);
      break;

    case "ENOENT, open 'this file does not exist'":
      assert.equal(er.domain, d);
      assert.equal(er.domainThrown, false);
      assert.equal(typeof er.domainBound, 'function');
      assert.ok(!er.domainEmitter);
      assert.equal(er.code, 'ENOENT');
      assert.equal(er_path, 'this file does not exist');
      assert.equal(typeof er.errno, 'number');
      break;

    case "ENOENT, open 'stream for nonexistent file'":
      assert.equal(typeof er.errno, 'number');
      assert.equal(er.code, 'ENOENT');
      assert.equal(er_path, 'stream for nonexistent file');
      assert.equal(er.domain, d);
      assert.equal(er.domainEmitter, fst);
      assert.ok(!er.domainBound);
      assert.equal(er.domainThrown, false);
      break;

    case 'implicit':
      assert.equal(er.domainEmitter, implicit);
      assert.equal(er.domain, d);
      assert.equal(er.domainThrown, false);
      assert.ok(!er.domainBound);
      break;

    case 'implicit timer':
      assert.equal(er.domain, d);
      assert.equal(er.domainThrown, true);
      assert.ok(!er.domainEmitter);
      assert.ok(!er.domainBound);
      break;

    case 'Cannot call method \'isDirectory\' of undefined':
      assert.equal(er.domain, d);
      assert.ok(!er.domainEmitter);
      assert.ok(!er.domainBound);
      break;

    case 'nextTick execution loop':
      assert.equal(er.domain, d);
      assert.ok(!er.domainEmitter);
      assert.ok(!er.domainBound);
      break;

    default:
      console.error('unexpected error, throwing %j', er.message, er);
      throw er;
  }

  caught++;
});



process.on('exit', function() {
  console.error('exit', caught, expectCaught);
  assert.equal(caught, expectCaught, 'caught the expected number of errors');
  console.log('ok');
});



// revert to using the domain when a callback is passed to nextTick in
// the middle of a tickCallback loop
d.run(function() {
  process.nextTick(function() {
    throw new Error('nextTick execution loop');
  });
});
expectCaught++;



// catch thrown errors no matter how many times we enter the event loop
// this only uses implicit binding, except for the first function
// passed to d.run().  The rest are implicitly bound by virtue of being
// set up while in the scope of the d domain.
d.run(function() {
  process.nextTick(function() {
    var i = setInterval(function () {
      clearInterval(i);
      setTimeout(function() {
        fs.stat('this file does not exist', function(er, stat) {
          // uh oh!  stat isn't set!
          // pretty common error.
          console.log(stat.isDirectory());
        });
      });
    });
  });
});
expectCaught++;



// implicit addition of a timer created within a domain-bound context.
d.run(function() {
  setTimeout(function() {
    throw new Error('implicit timer');
  });
});
expectCaught++;



// Event emitters added to the domain have their errors routed.
d.add(e);
e.emit('error', new Error('emitted'));
expectCaught++;



// get rid of the `if (er) return cb(er)` malarky, by intercepting
// the cb functions to the domain, and using the intercepted function
// as a callback instead.
function fn(er) {
  throw new Error('This function should never be called!');
  process.exit(1);
}

var bound = d.intercept(fn);
bound(new Error('bound'));
expectCaught++;



// intercepted should never pass first argument to callback
function fn2(data) {
  assert.equal(data, 'data', 'should not be null err argument')
}

var bound = d.intercept(fn2);
bound(null, 'data');

// intercepted should never pass first argument to callback
// even if arguments length is more than 2.
function fn3(data, data2) {
  assert.equal(data, 'data', 'should not be null err argument');
  assert.equal(data2, 'data2', 'should not be data argument');
}

bound = d.intercept(fn3);
bound(null, 'data', 'data2');

// throwing in a bound fn is also caught,
// even if it's asynchronous, by hitting the
// global uncaughtException handler. This doesn't
// require interception, since throws are always
// caught by the domain.
function thrower() {
  throw new Error('thrown');
}
setTimeout(d.bind(thrower), 100);
expectCaught++;



// Pass an intercepted function to an fs operation that fails.
fs.open('this file does not exist', 'r', d.intercept(function(er) {
  console.error('should not get here!', er);
  throw new Error('should not get here!');
}, true));
expectCaught++;



// implicit addition by being created within a domain-bound context.
var implicit;

d.run(function() {
  implicit = new events.EventEmitter;
});

setTimeout(function() {
  // escape from the domain, but implicit is still bound to it.
  implicit.emit('error', new Error('implicit'));
}, 10);
expectCaught++;


var result = d.run(function () {
  return 'return value';
});
assert.equal(result, 'return value');


var fst = fs.createReadStream('stream for nonexistent file')
d.add(fst)
expectCaught++;