From eae7e7561188cba5ec62ab41b62714a82e566771 Mon Sep 17 00:00:00 2001
From: Neil Lalonde <neillalonde@gmail.com>
Date: Fri, 6 Sep 2013 11:50:05 -0400
Subject: [PATCH] FIX: recover post by a non-staff user fails because the post
 is not unique. Uniqueness check shouldn't happen when recovering a deleted
 post.

---
 app/models/post.rb                            |  2 +-
 lib/post_destroyer.rb                         |  1 +
 lib/validators/post_validator.rb              |  1 +
 spec/components/post_destroyer_spec.rb        | 40 +++++++++----------
 .../validators/post_validator_spec.rb         | 34 ++++++++++++++++
 5 files changed, 57 insertions(+), 21 deletions(-)

diff --git a/app/models/post.rb b/app/models/post.rb
index c30d4df925b..0af2e472d62 100644
--- a/app/models/post.rb
+++ b/app/models/post.rb
@@ -35,7 +35,7 @@ class Post < ActiveRecord::Base
   validates_with ::Validators::PostValidator
 
   # We can pass several creating options to a post via attributes
-  attr_accessor :image_sizes, :quoted_post_numbers, :no_bump, :invalidate_oneboxes, :cooking_options
+  attr_accessor :image_sizes, :quoted_post_numbers, :no_bump, :invalidate_oneboxes, :cooking_options, :skip_unique_check
 
   SHORT_POST_CHARS = 1200
 
diff --git a/lib/post_destroyer.rb b/lib/post_destroyer.rb
index 799872b9853..b02eb8f0b50 100644
--- a/lib/post_destroyer.rb
+++ b/lib/post_destroyer.rb
@@ -114,6 +114,7 @@ class PostDestroyer
   def user_recovered
     Post.transaction do
       @post.update_column(:user_deleted, false)
+      @post.skip_unique_check = true
       @post.revise(@user, @post.versions.last.modifications["raw"][0], force_new_version: true)
       @post.update_flagged_posts_count
     end
diff --git a/lib/validators/post_validator.rb b/lib/validators/post_validator.rb
index e9ae7704c61..1386f11c9cd 100644
--- a/lib/validators/post_validator.rb
+++ b/lib/validators/post_validator.rb
@@ -58,6 +58,7 @@ class Validators::PostValidator < ActiveModel::Validator
   # Stop us from posting the same thing too quickly
   def unique_post_validator(post)
     return if SiteSetting.unique_posts_mins == 0
+    return if post.skip_unique_check
     return if post.acting_user.admin? || post.acting_user.moderator?
 
     # If the post is empty, default to the validates_presence_of
diff --git a/spec/components/post_destroyer_spec.rb b/spec/components/post_destroyer_spec.rb
index 0570f41d6eb..50de3b5b386 100644
--- a/spec/components/post_destroyer_spec.rb
+++ b/spec/components/post_destroyer_spec.rb
@@ -94,28 +94,28 @@ describe PostDestroyer do
 
   describe 'basic destroying' do
 
-    context "as the creator of the post" do
-      before do
-        @orig = post.cooked
-        PostDestroyer.new(post.user, post).destroy
-        post.reload
-      end
+    it "as the creator of the post, doesn't delete the post" do
+      SiteSetting.stubs(:unique_posts_mins).returns(5)
+      SiteSetting.stubs(:delete_removed_posts_after).returns(24)
 
-      it "doesn't delete the post" do
-        SiteSetting.stubs(:delete_removed_posts_after).returns(24)
-        post.deleted_at.should be_blank
-        post.deleted_by.should be_blank
-        post.user_deleted.should be_true
-        post.raw.should == I18n.t('js.post.deleted_by_author', {count: 24})
-        post.version.should == 2
+      post2 = create_post # Create it here instead of with "let" so unique_posts_mins can do its thing
 
-        # lets try to recover
-        PostDestroyer.new(post.user, post).recover
-        post.reload
-        post.version.should == 3
-        post.user_deleted.should be_false
-        post.cooked.should == @orig
-      end
+      @orig = post2.cooked
+      PostDestroyer.new(post2.user, post2).destroy
+      post2.reload
+
+      post2.deleted_at.should be_blank
+      post2.deleted_by.should be_blank
+      post2.user_deleted.should be_true
+      post2.raw.should == I18n.t('js.post.deleted_by_author', {count: 24})
+      post2.version.should == 2
+
+      # lets try to recover
+      PostDestroyer.new(post2.user, post2).recover
+      post2.reload
+      post2.version.should == 3
+      post2.user_deleted.should be_false
+      post2.cooked.should == @orig
     end
 
     context "as a moderator" do
diff --git a/spec/components/validators/post_validator_spec.rb b/spec/components/validators/post_validator_spec.rb
index cc6e4afb1f1..00e39f21cdb 100644
--- a/spec/components/validators/post_validator_spec.rb
+++ b/spec/components/validators/post_validator_spec.rb
@@ -31,4 +31,38 @@ describe Validators::PostValidator do
     end
   end
 
+  describe "unique_post_validator" do
+    before do
+      SiteSetting.stubs(:unique_posts_mins).returns(5)
+    end
+
+    context "post is unique" do
+      before do
+        $redis.stubs(:exists).with(post.unique_post_key).returns(nil)
+      end
+
+      it "should not add an error" do
+        validator.unique_post_validator(post)
+        post.errors.count.should == 0
+      end
+    end
+
+    context "post is not unique" do
+      before do
+        $redis.stubs(:exists).with(post.unique_post_key).returns('1')
+      end
+
+      it "should add an error" do
+        validator.unique_post_validator(post)
+        expect(post.errors.count).to be > 0
+      end
+
+      it "should not add an error if post.skip_unique_check is true" do
+        post.skip_unique_check = true
+        validator.unique_post_validator(post)
+        post.errors.count.should == 0
+      end
+    end
+  end
+
 end