Fix forceId validation error

lib/connectors/memory.js

@@ -793,7 +793,9 @@ Memory.prototype.replaceById = function(model, id, data, options, cb) {
   var modelData = cachedModels && this.collection(model)[id];
   if (!modelData) {
     var msg = 'Could not replace. Object with id ' + id + ' does not exist!';
-    return process.nextTick(function() { cb(new Error(msg)); });
+    var error = new Error(msg);
+    error.statusCode = error.status = 404;
+    return process.nextTick(function() { cb(error); });
   }
 
   var newModelData = {};

lib/dao.js

@@ -840,6 +840,11 @@ DataAccessObject.replaceOrCreate = function replaceOrCreate(data, options, cb) {
     return this.create(data, options, cb);
   }
 
+  var forceId = this.settings.forceId;
+  if (forceId) {
+    return Model.replaceById(id, data, options, cb);
+  }
+
   var inst;
   if (data instanceof Model) {
     inst = data;

test/manipulation.test.js

@@ -12,6 +12,7 @@ var should = require('./init.js');
 
 var db, Person;
 var ValidationError = require('..').ValidationError;
+var bdd = require('./helpers/bdd-if.js');
 
 var UUID_REGEXP = /^[0-9a-f]{8}-[0-9a-f]{4}-[1-5][0-9a-f]{3}-[89ab][0-9a-f]{3}-[0-9a-f]{12}$/i;
 
@@ -1097,6 +1098,52 @@ describe('manipulation', function() {
     });
   }
 
+  var hasReplaceById = !!getSchema().connector.replaceById;
+  bdd.describeIf(hasReplaceById, 'replaceOrCreate when forceId is true', function() {
+    var Post;
+    before(function(done) {
+      var ds = getSchema();
+      Post = ds.define('Post', {
+        title: {type: String, length: 255},
+        content: {type: String},
+      }, {forceId: true});
+      ds.automigrate('Post', done);
+    });
+
+    it('fails when id does not exist in db', function(done) {
+      var post = {id: 123, title: 'a', content: 'AAA'};
+      Post.replaceOrCreate(post, function(err, p) {
+        err.statusCode.should.equal(404);
+        done();
+      });
+    });
+
+    it('works on create if the request does not include an id', function(done) {
+      var post = {title: 'a', content: 'AAA'};
+      Post.replaceOrCreate(post, function(err, p) {
+        if (err) return done(err);
+        p.title.should.equal(post.title);
+        p.content.should.equal(post.content);
+        done();
+      });
+    });
+
+    it('works on update if the request includes an existing id in db', function(done) {
+      Post.create({title: 'a', content: 'AAA'},
+           function(err, post) {
+             if (err) return done(err);
+             post = post.toObject();
+             delete post.content;
+             post.title = 'b';
+             Post.replaceOrCreate(post, function(err, p) {
+               if (err) return done(err);
+               p.id.should.equal(post.id);
+               done();
+             });
+           });
+    });
+  });
+
   if (!getSchema().connector.replaceById) {
     describe.skip('replaceAttributes/replaceById - not implemented', function() {});
   } else {