1 files changed, 26 insertions, 0 deletions
diff --git a/spec/migrations/reseed_merge_trains_enabled_spec.rb b/spec/migrations/reseed_merge_trains_enabled_spec.rb
new file mode 100644
index 00000000000..71ef0b47da9
--- /dev/null
+++ b/spec/migrations/reseed_merge_trains_enabled_spec.rb
@@ -0,0 +1,26 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+require Rails.root.join('db', 'migrate', '20201112195322_reseed_merge_trains_enabled.rb')
+
+RSpec.describe ReseedMergeTrainsEnabled do
+  describe 'migrate' do
+    let(:project_ci_cd_settings) { table(:project_ci_cd_settings) }
+    let(:projects) { table(:projects) }
+    let(:namespaces) { table(:namespaces) }
+
+    context 'when on Gitlab.com' do
+      before do
+        namespace = namespaces.create!(name: 'hello', path: 'hello/')
+        project1 = projects.create!(namespace_id: namespace.id)
+        project2 = projects.create!(namespace_id: namespace.id)
+        project_ci_cd_settings.create!(project_id: project1.id, merge_pipelines_enabled: true)
+        project_ci_cd_settings.create!(project_id: project2.id, merge_pipelines_enabled: false)
+      end
+
+      it 'updates merge_trains_enabled to true for where merge_pipelines_enabled is true' do
+        expect { migrate! }.to change(project_ci_cd_settings.where(merge_trains_enabled: true), :count).by(1)
+      end
+    end
+  end
+end