diff --git a/tests/test_plugins.py b/tests/test_plugins.py
index cb209f2..8a241d9 100644
--- a/tests/test_plugins.py
+++ b/tests/test_plugins.py
@@ -59,6 +59,24 @@ class PluginTest(BaseTest):
         self.assertTrue(rendered.find('<article id="post-second-post"') > -1)
         self.assertTrue(rendered.find(posts[1].get_absolute_url()) > -1)
 
+        # Checking copy relations
+        ph = pages[0].placeholders.get(slot='content')
+        original = ph.get_plugins('en')
+        pages[0].publish('en')
+        published = pages[0].get_public_object()
+        ph = published.placeholders.get(slot='content')
+        new = ph.get_plugins('en')
+        self.assertNotEqual(original, new)
+
+        casted_tags, __ = new[0].get_plugin_instance()
+        casted_categories, __ = new[1].get_plugin_instance()
+
+        self.assertEqual(casted_tags.tags.count(), 1)
+        self.assertEqual(casted_tags.categories.count(), 0)
+
+        self.assertEqual(casted_categories.tags.count(), 0)
+        self.assertEqual(casted_categories.categories.count(), 1)
+
     def test_plugin_authors(self):
         pages = self.get_pages()
         posts = self.get_posts()
@@ -73,6 +91,36 @@ class PluginTest(BaseTest):
         rendered = plugin.render_plugin(context, ph)
         self.assertTrue(rendered.find('No article found') > -1)
 
+        plugin.authors.add(self.user)
+        context = self.get_plugin_context(pages[0], 'en', plugin, edit=True)
+        rendered = plugin.render_plugin(context, ph)
+        self.assertTrue(rendered.find('/en/blog/author/admin/') > -1)
+        self.assertTrue(rendered.find('2 articles') > -1)
+
+        plugin.authors.add(self.user_staff)
+        context = self.get_plugin_context(pages[0], 'en', plugin, edit=True)
+        rendered = plugin.render_plugin(context, ph)
+        self.assertTrue(rendered.find('/en/blog/author/staff/') > -1)
+        self.assertTrue(rendered.find('0 articles') > -1)
+
+        plugin.authors.add(self.user_normal)
+        context = self.get_plugin_context(pages[0], 'en', plugin, edit=True)
+        rendered = plugin.render_plugin(context, ph)
+        self.assertTrue(rendered.find('/en/blog/author/normal/') > -1)
+        self.assertTrue(rendered.find('0 articles') > -1)
+
+        # Checking copy relations
+        ph = pages[0].placeholders.get(slot='content')
+        original = ph.get_plugins('en')
+        pages[0].publish('en')
+        published = pages[0].get_public_object()
+        ph = published.placeholders.get(slot='content')
+        new = ph.get_plugins('en')
+        self.assertNotEqual(original, new)
+
+        casted_authors, __ = new[0].get_plugin_instance()
+        self.assertEqual(casted_authors.authors.count(), 3)
+
     def test_plugin_tags(self):
         pages = self.get_pages()
         posts = self.get_posts()