diff --git a/core/test/integration/model/model_posts_spec.js b/core/test/integration/model/model_posts_spec.js
index 0c7119ab5d..690695277a 100644
--- a/core/test/integration/model/model_posts_spec.js
+++ b/core/test/integration/model/model_posts_spec.js
@@ -9,6 +9,8 @@ var should = require('should'),
     ghostBookshelf = require('../../../server/models/base'),
     PostModel = require('../../../server/models/post').Post,
     TagModel = require('../../../server/models/tag').Tag,
+    UserModel = require('../../../server/models/user').User,
+    RoleModel = require('../../../server/models/role').Role,
     common = require('../../../server/lib/common'),
     configUtils = require('../../utils/configUtils'),
     DataGenerator = testUtils.DataGenerator,
@@ -51,6 +53,7 @@ describe('Post Model', function () {
             firstPost.url.should.equal('/html-ipsum/');
             firstPost.fields.should.be.an.Array();
             firstPost.tags.should.be.an.Array();
+
             firstPost.author.name.should.equal(DataGenerator.Content.users[0].name);
             firstPost.fields[0].key.should.equal(DataGenerator.Content.app_fields[0].key);
             firstPost.created_at.should.be.an.instanceof(Date);
@@ -1027,6 +1030,21 @@ describe('Post Model', function () {
                 });
             });
 
+            it('[unsupported] can\'t add `author` as object', function () {
+                var newPost = testUtils.DataGenerator.forModel.posts[2];
+
+                // `post.author` relation get's ignored in Ghost - unsupported
+                newPost.author = {id: testUtils.DataGenerator.Content.users[3].id};
+                delete newPost.author_id;
+
+                return PostModel.add(newPost, context)
+                    .then(function (createdPost) {
+                        // fallsback to logged in user
+                        createdPost.get('author_id').should.eql(context.context.user);
+                        createdPost.get('author_id').should.not.eql(testUtils.DataGenerator.Content.users[3].id);
+                    });
+            });
+
             it('can add, defaults are all correct', function (done) {
                 var createdPostUpdatedDate,
                     newPost = testUtils.DataGenerator.forModel.posts[2],
@@ -1720,6 +1738,8 @@ describe('Post Model', function () {
 
             return Promise.props({
                 post: PostModel.add(post, _.extend({}, context, {withRelated: ['tags']})),
+                role: RoleModel.add(testUtils.DataGenerator.forKnex.roles[2], context),
+                user: UserModel.add(testUtils.DataGenerator.forKnex.users[0], context),
                 tag1: TagModel.add(extraTags[0], context),
                 tag2: TagModel.add(extraTags[1], context),
                 tag3: TagModel.add(extraTags[2], context)
@@ -1774,6 +1794,22 @@ describe('Post Model', function () {
             });
         });
 
+        it('[unsupported] can\'t edit `author` as object', function () {
+            var newJSON = _.cloneDeep(postJSON),
+                modelOptions = _.clone(editOptions);
+
+            newJSON.author.should.eql(testUtils.DataGenerator.Content.users[0].id);
+            newJSON.author = {id: testUtils.DataGenerator.Content.users[3].id};
+            delete newJSON.author_id;
+
+            modelOptions.withRelated.push('author');
+            return PostModel.edit(newJSON, modelOptions)
+                .then(function (updatedPost) {
+                    updatedPost.get('author_id').should.eql(testUtils.DataGenerator.Content.users[0].id);
+                    updatedPost.related('author').toJSON().slug.should.eql(testUtils.DataGenerator.Content.users[0].slug);
+                });
+        });
+
         it('can\'t edit dates and authors of existing tag', function () {
             var newJSON = _.cloneDeep(postJSON), updatedAtFormat;