Some unit tests;

package.json

@@ -10,6 +10,10 @@
     "mongoose": "*",
     "extend": "*"
   },
+  "devDependencies": {
+    "mocha": "*",
+    "should": "*"
+  },
   "keywords": [
     "mongoose",
     "plugin",
@@ -26,6 +30,12 @@
     "mongoose-pureautoinc"
   ],
   "author": "Chevex",
+  "contributors": [
+    {
+      "name": "Nassor Paulino da Silva",
+      "email": "[email protected]"
+    } 
+  ],
   "bugs": {
     "url": "https://github.com/Chevex/mongoose-auto-increment/issues"
   }

test/mocha.opts

@@ -0,0 +1,2 @@
+--require should
+-R spec

test/test.js

@@ -0,0 +1,112 @@
+var mongoose = require('mongoose')
+  , should = require('should')
+  , autoIncrement = require('../index.js');
+
+mongoose.connect('mongodb://localhost/mongoose-auto-increment-test');
+
+after(function(done) {
+  mongoose.connection.db.executeDbCommand( {dropDatabase:1}, function(err, result) {
+    done();
+  });
+});
+
+describe('Auto Increment Plugin', function() {
+
+  it('should auto-increment in _id', function(done) {
+
+    var SomeSchema = new mongoose.Schema({
+      name: String,
+      dept: String
+    });
+    SomeSchema.plugin(autoIncrement, 'ai_id');
+    var User = mongoose.model('ai_id', SomeSchema);
+    var user = new User({ name: 'Name test', dept: 'Department test' });
+
+    user.save(function(err) {
+      should.not.exists(err);
+      user._id.should.eql(0)
+      done();
+    });
+  });
+
+  it('should auto-increment in another field', function(done) {
+    var SomeSchema = new mongoose.Schema({
+      name: String,
+      dept: String,
+      sequence: Number
+    });
+    SomeSchema.plugin(autoIncrement, {model: 'ai_another_field', field: 'sequence'});
+    var User = mongoose.model('ai_another_field', SomeSchema);
+
+    var user = new User({ name: 'Name test', dept: 'Department test' });
+    user.save(function(err) {
+      should.not.exists(err);
+      user.sequence.should.eql(0);
+      done();
+    });
+  });
+
+  it('should start at selected number', function(done) {
+    var SomeSchema = new mongoose.Schema({
+      name: String,
+      dept: String
+    });
+    SomeSchema.plugin(autoIncrement, {model: 'ai_start_at', startAt: 3});
+    var User = mongoose.model('ai_start_at', SomeSchema);
+
+    var user = new User({ name: 'Name test', dept: 'Department test' });
+    user.save(function(err) {
+      should.not.exists(err);
+      user._id.should.eql(3);
+      done();
+    });
+  });
+
+  it('should increment in accordance with the selected number', function(done) {
+    var SomeSchema = new mongoose.Schema({
+      name: String,
+      dept: String
+    });
+    SomeSchema.plugin(autoIncrement, {model: 'incrementBy', incrementBy: 5});
+    var User = mongoose.model('incrementBy', SomeSchema);
+
+    var user = new User({ name: 'Name test', dept: 'Department test' });
+
+
+    user.save(function(err) {
+      should.not.exists(err);
+      user._id.should.eql(4);
+
+      var user2 = new User({ name: 'Name test 2', dept: 'Department test' });
+      user2.save(function(err) {
+        should.not.exists(err);
+        user2._id.should.eql(9);
+        done();
+      });
+    });
+  });
+
+  // Can't be made with _id field.
+  it('should increment on update', function(done) {
+    var SomeSchema = new mongoose.Schema({
+      name: String,
+      dept: String,
+      sequence: Number
+    });
+    SomeSchema.plugin(autoIncrement, {model: 'incrementOnUpdate', field: 'sequence', incrementOnUpdate: true});
+    var User = mongoose.model('incrementOnUpdate', SomeSchema);
+    var user = new User({ name: 'Name test', dept: 'Department test' });
+
+    user.save(function(err) {
+      should.not.exists(err);
+      user.sequence.should.eql(0);
+      user.name = 'Name change test';
+      user.save(function(err) {
+        should.not.exists(err);
+        user.sequence.should.eql(1);
+        done();
+      });
+    });
+
+  });
+});