Fix intermitten elastic-related specs failures

ee/spec/models/elastic/migration_record_spec.rb

@@ -7,7 +7,7 @@ RSpec.describe Elastic::MigrationRecord, :elastic do
 
   describe '#save!' do
     it 'creates an index if it is not found' do
-      es_helper.delete_index(index_name: @migrations_index_name)
+      es_helper.delete_index(index_name: es_helper.migrations_index_name)
 
       expect { record.save!(completed: true) }.to raise_error(/index is not found/)
     end
@@ -55,7 +55,7 @@ RSpec.describe Elastic::MigrationRecord, :elastic do
       completed_versions.each { |migration| migration.save!(completed: true) }
       in_progress_migration.save!(completed: false)
 
-      es_helper.refresh_index(index_name: @migrations_index_name)
+      es_helper.refresh_index(index_name: es_helper.migrations_index_name)
     end
 
     it 'loads all records' do
@@ -64,7 +64,7 @@ RSpec.describe Elastic::MigrationRecord, :elastic do
     end
 
     it 'returns empty array if no index present' do
-      es_helper.delete_index(index_name: @migrations_index_name)
+      es_helper.delete_index(index_name: es_helper.migrations_index_name)
 
       expect(described_class.persisted_versions(completed: true)).to eq([])
       expect(described_class.persisted_versions(completed: false)).to eq([])

ee/spec/support/elastic.rb

 # frozen_string_literal: true
 
 RSpec.configure do |config|
-  config.before(:each, :elastic) do
+  config.around(:each, :elastic) do |example|
+    helper = Gitlab::Elastic::Helper.default
+
     Elastic::ProcessBookkeepingService.clear_tracking!
-    Gitlab::Elastic::Helper.default.delete_index
-    Gitlab::Elastic::Helper.default.create_empty_index(options: { settings: { number_of_replicas: 0 } })
-    @migrations_index_name = Gitlab::Elastic::Helper.default.create_migrations_index
-  end
 
-  config.after(:each, :elastic) do
-    Gitlab::Elastic::Helper.default.delete_index
+    # Delete the migration index and the main ES index
+    helper.delete_index(index_name: helper.migrations_index_name)
+    helper.delete_index
+
+    helper.create_empty_index(options: { settings: { number_of_replicas: 0 } })
+    helper.create_migrations_index
+
+    example.run
+
+    helper.delete_index(index_name: helper.migrations_index_name)
+    helper.delete_index
+
     Elastic::ProcessBookkeepingService.clear_tracking!
-    Gitlab::Elastic::Helper.default.delete_index(index_name: @migrations_index_name)
   end
 
   config.include ElasticsearchHelpers, :elastic

ee/spec/support/helpers/elasticsearch_helpers.rb

@@ -36,7 +36,7 @@ module ElasticsearchHelpers
 
   def refresh_index!
     es_helper.refresh_index
-    es_helper.refresh_index(index_name: @migrations_index_name) # rubocop:disable Gitlab/ModuleWithInstanceVariables
+    es_helper.refresh_index(index_name: es_helper.migrations_index_name)
   end
 
   def es_helper

ee/spec/workers/elastic/migration_worker_spec.rb

@@ -23,9 +23,9 @@ RSpec.describe Elastic::MigrationWorker, :elastic do
       end
 
       it 'creates an index if it does not exist' do
-        Gitlab::Elastic::Helper.default.delete_index(index_name: @migrations_index_name)
+        Gitlab::Elastic::Helper.default.delete_index(index_name: es_helper.migrations_index_name)
 
-        expect { subject.perform }.to change { Gitlab::Elastic::Helper.default.index_exists?(index_name: @migrations_index_name) }.from(false).to(true)
+        expect { subject.perform }.to change { Gitlab::Elastic::Helper.default.index_exists?(index_name: es_helper.migrations_index_name) }.from(false).to(true)
       end
 
       context 'no unexecuted migrations' do