fixes #2386, fix tests

app/models/post.rb

@@ -20,6 +20,7 @@ class Post < ActiveRecord::Base
   before_save :update_tag_post_counts
   before_save :set_tag_counts
   before_save :set_pool_category_pseudo_tags
+  before_create :autoban
   before_validation :strip_source
   before_validation :initialize_uploader, :on => :create
   before_validation :parse_pixiv_id
@@ -290,6 +291,12 @@ class Post < ActiveRecord::Base
     def disapproved_by?(user)
       PostDisapproval.where(:user_id => user.id, :post_id => id).exists?
     end
+
+    def autoban
+      if has_tag?("banned_artist")
+        self.is_banned = true
+      end
+    end
   end
 
   module PresenterMethods
@@ -1558,6 +1565,7 @@ class Post < ActiveRecord::Base
   def reload(options = nil)
     super
     reset_tag_array_cache
+    @pools = nil
     @tag_categories = nil
     @typed_tags = nil
     self

test/factories/tag.rb

@@ -1,6 +1,6 @@
 FactoryGirl.define do
   factory(:tag) do
-    name {Faker::Name.first_name.downcase}
+    name {"#{Faker::Name.first_name.downcase}#{rand(1000)}"}
     post_count 0
     category {Tag.categories.general}
     related_tags ""

test/unit/post_test.rb

@@ -33,18 +33,23 @@ class PostTest < ActiveSupport::TestCase
         end
       end
 
-      should "remove the post from all pools" do
-        pool = FactoryGirl.create(:pool)
-        pool.add!(@post)
-        @post.expunge!
-        pool.reload
-        assert_equal("", pool.post_ids)
-      end
+      context "that belongs to a pool" do
+        setup do
+          @pool = FactoryGirl.create(:pool)
+          @pool.add!(@post)
+          @post.reload
+          @post.expunge!
+        end
 
-      should "destroy the record" do
-        @post.expunge!
-        assert_equal([], @post.errors.full_messages)
-        assert_equal(0, Post.where("id = ?", @post.id).count)
+        should "remove the post from all pools" do
+          @pool.reload
+          assert_equal("", @pool.post_ids)
+        end
+
+        should "destroy the record" do
+          assert_equal([], @post.errors.full_messages)
+          assert_equal(0, Post.where("id = ?", @post.id).count)
+        end
       end
     end
 
@@ -425,6 +430,18 @@ class PostTest < ActiveSupport::TestCase
         @post = FactoryGirl.create(:post)
       end
 
+      context "with a banned artist" do
+        setup do
+          @artist = FactoryGirl.create(:artist)
+          @artist.ban!
+          @post = FactoryGirl.create(:post, :tag_string => @artist.name)
+        end
+
+        should "ban the post" do
+          assert_equal(true, @post.is_banned?)
+        end
+      end
+
       context "with an artist tag that is then changed to copyright" do
         setup do
           CurrentUser.user = FactoryGirl.create(:builder_user)