[MM-21551] Add search tests structure to test the search engines (#14031)

* WIP

* Adding bleve to go modules

* WIP

* Adding missing files from searchengine implementation

* WIP

* WIP

* WIP

* WIP

* WIP

* WIP

* User and channel indexing and searches implemented

* Make bleve tests run with in-memory indexes

* Implement post index and deletion tests

* Initial commits for the search layer

* Removing unnecesary indexing

* WIP

* WIP

* More fixes for tests

* Adding the search layer

* Finishing the migration of searchers to the layer

* Removing unnecesary code

* Allowing multiple engines active at the same time

* WIP

* Add simple post search

* Print information when using bleve

* Adding some debugging to understand better how the searches are working

* Making more dynamic config of search engines

* Add post search basics

* Adding the Purge API endpoint

* Fixing bleve config updates

* Adding missed file

* Regenerating search engine mocks

* Adding missed v5 to modules imports

* fixing i18n

* Fixing some test around search engine

* Removing all bleve traces

* Cleaning up the vendors directory and go.mod/go.sum files

* Regenerating timer layer

* Adding properly the license

* Fixing govet shadow error

* Fixing some tests

* Fixing TestSearchPostsFromUser

* Fixing another test

* Fixing more tests

* Fixing more tests

* Removing SearchEngine redundant text from searchengine module code

* Fixing some reindexing problems in members updates

* Fixing tests

* Addressing PR comments

* Reverting go.mod and go.sum

* Addressing PR comments

* Fixing tests compilation

* Fixing govet

* Adding search engine stop method

* Being more explicit on where we use includeDeleted

* Adding GetSqlSupplier test helper method

* Mocking elasticsearch start function

* Fixing tests

* Search tests

* Fix tests

* Fix mod

* Fixing searchEngine for test helpers with store mocks

* Remove loglines

* Fix i18n strings

* Migrate search posts tests

* Fix linter

* Do not run search tests if -short flag is enabled

* Migrate back store tests that didn't belong to the searchlayer

* Fix scopelint issues

Co-authored-by: Jesús Espino <jespinog@gmail.com>

store/searchlayer/post_layer.go

@@ -18,7 +18,7 @@ type SearchPostStore struct {
 func (s SearchPostStore) indexPost(post *model.Post) {
 	for _, engine := range s.rootStore.searchEngine.GetActiveEngines() {
 		if engine.IsIndexingEnabled() {
-			go (func(engineCopy searchengine.SearchEngineInterface) {
+			runIndexFn(engine, func(engineCopy searchengine.SearchEngineInterface) {
 				channel, chanErr := s.rootStore.Channel().Get(post.ChannelId, true)
 				if chanErr != nil {
 					mlog.Error("Couldn't get channel for post for SearchEngine indexing.", mlog.String("channel_id", post.ChannelId), mlog.String("search_engine", engineCopy.GetName()), mlog.String("post_id", post.Id), mlog.Err(chanErr))
@@ -28,7 +28,7 @@ func (s SearchPostStore) indexPost(post *model.Post) {
 					mlog.Error("Encountered error indexing post", mlog.String("post_id", post.Id), mlog.String("search_engine", engineCopy.GetName()), mlog.Err(err))
 				}
 				mlog.Debug("Indexed post in search engine", mlog.String("search_engine", engineCopy.GetName()), mlog.String("post_id", post.Id))
-			})(engine)
+			})
 		}
 	}
 }
@@ -36,12 +36,12 @@ func (s SearchPostStore) indexPost(post *model.Post) {
 func (s SearchPostStore) deletePostIndex(post *model.Post) {
 	for _, engine := range s.rootStore.searchEngine.GetActiveEngines() {
 		if engine.IsIndexingEnabled() {
-			go (func(engineCopy searchengine.SearchEngineInterface) {
+			runIndexFn(engine, func(engineCopy searchengine.SearchEngineInterface) {
 				if err := engineCopy.DeletePost(post); err != nil {
 					mlog.Error("Encountered error deleting post", mlog.String("post_id", post.Id), mlog.String("search_engine", engineCopy.GetName()), mlog.Err(err))
 				}
 				mlog.Debug("Removed post from the index in search engine", mlog.String("search_engine", engineCopy.GetName()), mlog.String("post_id", post.Id))
-			})(engine)
+			})
 		}
 	}
 }