1 files changed, 54 insertions, 0 deletions
diff --git a/spec/lib/gitlab/background_migration/cleanup_draft_data_from_faulty_regex_spec.rb b/spec/lib/gitlab/background_migration/cleanup_draft_data_from_faulty_regex_spec.rb
new file mode 100644
index 00000000000..d1ef7ca2188
--- /dev/null
+++ b/spec/lib/gitlab/background_migration/cleanup_draft_data_from_faulty_regex_spec.rb
@@ -0,0 +1,54 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+RSpec.describe Gitlab::BackgroundMigration::CleanupDraftDataFromFaultyRegex, :migration, schema: 20220326161803 do
+  let(:namespaces)     { table(:namespaces) }
+  let(:projects)       { table(:projects) }
+  let(:merge_requests) { table(:merge_requests) }
+
+  let(:group)   { namespaces.create!(name: 'gitlab', path: 'gitlab') }
+  let(:project) { projects.create!(namespace_id: group.id) }
+
+  let(:draft_prefixes) { ["[Draft]", "(Draft)", "Draft:", "Draft", "[WIP]", "WIP:", "WIP"] }
+
+  def create_merge_request(params)
+    common_params = {
+      target_project_id: project.id,
+      target_branch: 'feature1',
+      source_branch: 'master'
+    }
+
+    merge_requests.create!(common_params.merge(params))
+  end
+
+  context "mr.draft == true, and title matches the leaky regex and not the corrected regex" do
+    let(:mr_ids) { merge_requests.all.collect(&:id) }
+
+    before do
+      draft_prefixes.each do |prefix|
+        (1..4).each do |n|
+          create_merge_request(
+            title: "#{prefix} This is a title",
+            draft: true,
+            state_id: 1
+          )
+        end
+      end
+
+      create_merge_request(title: "This has draft in the title", draft: true, state_id: 1)
+    end
+
+    it "updates all open draft merge request's draft field to true" do
+      expect { subject.perform(mr_ids.first, mr_ids.last) }
+        .to change { MergeRequest.where(draft: true).count }
+        .by(-1)
+    end
+
+    it "marks successful slices as completed" do
+      expect(subject).to receive(:mark_job_as_succeeded).with(mr_ids.first, mr_ids.last)
+
+      subject.perform(mr_ids.first, mr_ids.last)
+    end
+  end
+end