Merge branch 'fix-random-failing-tests' into 'master'

Fix randomly failing specs (possibly caused by DatabaseCleaner) ## What does this MR do? This MR ensures that DatabaseCleaner.clean runs AFTER Capybara's cleanup. This is needed because it *seems* like database is being truncated before capybara session ends, which leads to `undefined method ... for nil:NilClass` exceptions causing tests to randomly fail. ## Are there points in the code the reviewer needs to double check? Failing spec is https://gitlab.com/gitlab-org/gitlab-ce/blob/master/spec/features/boards/boards_spec.rb. Here are some examples of failed builds: - https://gitlab.com/gitlab-org/gitlab-ce/builds/3352437 - https://gitlab.com/certik/gitlab-ce/builds/3359940 - https://gitlab.com/gitlab-org/gitlab-ee/builds/3365914 ## Why was this MR needed? I've noticed that many branches suffer from random failures and it's not very comfortable for big test suite. Re-running builds until they pass is not a solution so I tried to come up with a fix. Unfortunately I can't be 100% sure about this fix (flaky test is always green on my local environment, so I can't be sure if green build on CI is false-positive or not), but if database is really being cleaned too early (which is clearly proved by logs provided here https://gitlab.com/gitlab-org/gitlab-ce/issues/21841#note_14926675 then it's very likely that this fix will help to get rid of random failures. Also it's officially recommended in DatabaseCleaner README to use `append_after` hook instead of just `after` because of the way RSpec runs after hooks (in reverse order): > It's also recommended to use append_after to ensure DatabaseCleaner.clean runs after the after-test cleanup capybara/rspec installs. ([source](https://github.com/DatabaseCleaner/database_cleaner#rspec-with-capybara-example)) ## What are the relevant issue numbers? #21197 See merge request !6198

Merge branch 'fix-random-failing-tests' into 'master'
43d6328f · Stan Hu · fc0ceb20 · 49ea6ac7 · 43d6328f
Commit 43d6328f authored Sep 08, 2016 by Stan Hu
Show whitespace changes
Inline Side-by-side

Showing with 1 addition and 1 deletion

db_cleaner.rb spec/support/db_cleaner.rb +1 -1

No files found.
--- a/spec/support/db_cleaner.rb
+++ b/spec/support/db_cleaner.rb
@@ -15,7 +15,7 @@ RSpec.configure do |config|
    DatabaseCleaner.start
  end
-  config.after(:each) do
+  config.append_after(:each) do
    DatabaseCleaner.clean
  end
 end