1 files changed, 45 insertions, 0 deletions
diff --git a/spec/migrations/20220307192610_remove_duplicate_project_tag_releases_spec.rb b/spec/migrations/20220307192610_remove_duplicate_project_tag_releases_spec.rb
new file mode 100644
index 00000000000..98e2ba4816b
--- /dev/null
+++ b/spec/migrations/20220307192610_remove_duplicate_project_tag_releases_spec.rb
@@ -0,0 +1,45 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+require_migration!
+
+RSpec.describe RemoveDuplicateProjectTagReleases, feature_category: :release_orchestration do
+  let(:namespaces) { table(:namespaces) }
+  let(:projects) { table(:projects) }
+  let(:users) { table(:users) }
+  let(:releases) { table(:releases) }
+
+  let(:namespace) { namespaces.create!(name: 'gitlab', path: 'gitlab-org') }
+  let(:project) { projects.create!(namespace_id: namespace.id, name: 'foo') }
+
+  let(:dup_releases) do
+    Array.new(4).fill do |i|
+      rel = releases.new(project_id: project.id, tag: "duplicate tag", released_at: (DateTime.now + i.days))
+      rel.save!(validate: false)
+      rel
+    end
+  end
+
+  let(:valid_release) do
+    releases.create!(
+      project_id: project.id,
+      tag: "valid tag",
+      released_at: DateTime.now
+    )
+  end
+
+  describe '#up' do
+    it "correctly removes duplicate tags from the same project" do
+      expect(dup_releases.length).to eq 4
+      expect(valid_release).not_to be nil
+      expect(releases.where(tag: 'duplicate tag').count).to eq 4
+      expect(releases.where(tag: 'valid tag').count).to eq 1
+
+      migrate!
+
+      expect(releases.where(tag: 'duplicate tag').count).to eq 1
+      expect(releases.where(tag: 'valid tag').count).to eq 1
+      expect(releases.all.map(&:tag)).to match_array ['valid tag', 'duplicate tag']
+    end
+  end
+end