Tag change notices

This adds a small notice at the bottom of post searches if a single tag search is the target of any tag change request.

test/unit/alias_and_implication_importer_test.rb

@@ -26,6 +26,28 @@ class AliasAndImplicationImporterTest < ActiveSupport::TestCase
       end
     end
 
+    context "#affected_tags" do
+      setup do
+        FactoryBot.create(:post, tag_string: "aaa")
+        FactoryBot.create(:post, tag_string: "bbb")
+        FactoryBot.create(:post, tag_string: "ccc")
+        FactoryBot.create(:post, tag_string: "ddd")
+        FactoryBot.create(:post, tag_string: "eee")
+
+        @script = "create alias aaa -> 000\n" +
+          "create implication bbb -> 111\n" +
+          "remove alias ccc -> 222\n" +
+          "remove implication ddd -> 333\n" +
+          "mass update eee -> 444\n"
+      end
+
+      subject { AliasAndImplicationImporter.new(@script, nil) }
+
+      should "return the correct tags" do
+        assert_equal(%w(aaa 000 bbb 111 ccc 222 ddd 333 eee 444), subject.affected_tags)
+      end
+    end
+
     context "#estimate_update_count" do
       setup do
         FactoryBot.create(:post, tag_string: "aaa")

test/unit/bulk_update_request_test.rb

@@ -35,6 +35,33 @@ class BulkUpdateRequestTest < ActiveSupport::TestCase
       end
     end
 
+    context "#update_notice" do
+      setup do
+        @mock_redis = MockRedis.new
+        @forum_topic = FactoryBot.create(:forum_topic)
+        TagChangeNoticeService.stubs(:redis_client).returns(@mock_redis)
+      end
+
+      should "update redis" do
+        @script = "create alias aaa -> 000\n" +
+          "create implication bbb -> 111\n" +
+          "remove alias ccc -> 222\n" +
+          "remove implication ddd -> 333\n" +
+          "mass update eee -> 444\n"
+        FactoryBot.create(:bulk_update_request, script: @script, forum_topic: @forum_topic)
+        assert_equal(@forum_topic.id.to_s, @mock_redis.get("tcn:aaa"))
+        assert_equal(@forum_topic.id.to_s, @mock_redis.get("tcn:000"))
+        assert_equal(@forum_topic.id.to_s, @mock_redis.get("tcn:bbb"))
+        assert_equal(@forum_topic.id.to_s, @mock_redis.get("tcn:111"))
+        assert_equal(@forum_topic.id.to_s, @mock_redis.get("tcn:ccc"))
+        assert_equal(@forum_topic.id.to_s, @mock_redis.get("tcn:222"))
+        assert_equal(@forum_topic.id.to_s, @mock_redis.get("tcn:ddd"))
+        assert_equal(@forum_topic.id.to_s, @mock_redis.get("tcn:333"))
+        assert_equal(@forum_topic.id.to_s, @mock_redis.get("tcn:eee"))
+        assert_equal(@forum_topic.id.to_s, @mock_redis.get("tcn:444"))
+      end
+    end
+
     context "on approval" do
       setup do
         @script = %q(

test/unit/tag_alias_test.rb

@@ -69,6 +69,19 @@ class TagAliasTest < ActiveSupport::TestCase
       end
     end
 
+    context "#update_notice" do
+      setup do
+        @mock_redis = MockRedis.new
+        @forum_topic = FactoryBot.create(:forum_topic)
+        TagChangeNoticeService.stubs(:redis_client).returns(@mock_redis)
+      end
+
+      should "update redis" do
+        FactoryBot.create(:tag_alias, antecedent_name: "aaa", consequent_name: "bbb", skip_secondary_validations: true, forum_topic: @forum_topic)
+        assert_equal(@forum_topic.id.to_s, @mock_redis.get("tcn:aaa"))
+      end
+    end
+
     context "on secondary validation" do
       should "warn about missing wiki pages" do
         ti = FactoryBot.build(:tag_alias, antecedent_name: "aaa", consequent_name: "bbb", skip_secondary_validations: false)

test/unit/tag_implication_test.rb

@@ -65,6 +65,19 @@ class TagImplicationTest < ActiveSupport::TestCase
       end
     end
 
+    context "#update_notice" do
+      setup do
+        @mock_redis = MockRedis.new
+        @forum_topic = FactoryBot.create(:forum_topic)
+        TagChangeNoticeService.stubs(:redis_client).returns(@mock_redis)
+      end
+
+      should "update redis" do
+        FactoryBot.create(:tag_implication, antecedent_name: "aaa", consequent_name: "bbb", skip_secondary_validations: true, forum_topic: @forum_topic)
+        assert_equal(@forum_topic.id.to_s, @mock_redis.get("tcn:aaa"))
+      end
+    end
+
     context "on secondary validation" do
       should "warn if either tag is missing a wiki" do
         ti = FactoryBot.build(:tag_implication, antecedent_name: "aaa", consequent_name: "bbb", skip_secondary_validations: false)