我正在搞乱Mongoose,我注意到在保存无效项目时多次调用我的find
回调:
persist.js
mongoose.model('ContentTag', new mongoose.Schema({
content: requiredString,
tag: requiredString
}));
test.js (使用mocha)
describe('content tag', function() {
it('should not save an empty content tag', function(done) {
persist.ContentTag().save(function(err) {
assert.ok(err);
persist.ContentTag.find(function(err, items) {
assert.equal(0, items.length);
done();
});
});
});
这会产生以下错误输出:
Save err: ValidatorError: Validator "required" failed for path tag
Save err: ValidatorError: Validator "required" failed for path content
Find err: null
Find err: null
以下错误:
1) Persist content tag should not save an empty content tag:
Error: done() called multiple times
at multiple (/usr/local/lib/node_modules/mocha/lib/runnable.js:168:31)
at done (/usr/local/lib/node_modules/mocha/lib/runnable.js:174:26)
at Runnable.run.duration (/usr/local/lib/node_modules/mocha/lib/runnable.js:190:9)
at persist.ContentTag.content (path/test/server-test.js:21:21)
at Query.execFind (path/node_modules/mongoose/lib/mongoose/query.js:572:26)
at Cursor.toArray (path/node_modules/mongoose/support/node-mongodb-native/lib/mongodb/cursor.js:122:15)
at Cursor.each (path/node_modules/mongoose/support/node-mongodb-native/lib/mongodb/cursor.js:167:11)
at Cursor.nextObject (path/node_modules/mongoose/support/node-mongodb-native/lib/mongodb/cursor.js:467:28)
at Cursor.close (path/node_modules/mongoose/support/node-mongodb-native/lib/mongodb/cursor.js:625:17)
at Cursor.nextObject (path/node_modules/mongoose/support/node-mongodb-native/lib/mongodb/cursor.js:467:10)
at Cursor.nextObject.commandHandler (path/node_modules/mongoose/support/node-mongodb-native/lib/mongodb/cursor.js:452:15)
at EventEmitter.emit (events.js:96:17)
at Db.open.self.serverConfig.connection.addListener.self.state (path/node_modules/mongoose/support/node-mongodb-native/lib/mongodb/db.js:90:12)
at EventEmitter.emit (events.js:93:17)
at Connection.open.receiveListener (path/node_modules/mongoose/support/node-mongodb-native/lib/mongodb/connection.js:82:16)
at Socket.Connection.open.receiveListener (path/node_modules/mongoose/support/node-mongodb-native/lib/mongodb/connection.js:85:16)
at Socket.EventEmitter.emit (events.js:93:17)
at TCP.onread (net.js:391:31)
看起来当有多个验证错误时,会针对每个错误调用一次保存回调。
当我删除new
关键字时,出现以下错误:
1) Persist content tag should not save an empty content tag:
TypeError: Object #<Object> has no method 'buildDoc'
at Object.Document (../node_modules/mongoose/lib/mongoose/document.js:26:19)
at Object.Model (../node_modules/mongoose/lib/mongoose/model.js:24:12)
at Object.model [as ContentTag]
答案 0 :(得分:1)
每次验证save
都会调用一次err
回调。因此,我多次呼叫done()
。回想起来,没有必要断言err
已定义且find()
调用为空。