1 files changed, 48 insertions, 0 deletions
diff --git a/spec/lib/gitlab/background_migration/reset_merge_status_spec.rb b/spec/lib/gitlab/background_migration/reset_merge_status_spec.rb
new file mode 100644
index 00000000000..740781f1aa5
--- /dev/null
+++ b/spec/lib/gitlab/background_migration/reset_merge_status_spec.rb
@@ -0,0 +1,48 @@
+# frozen_string_literal: true
+
+require 'rails_helper'
+
+describe Gitlab::BackgroundMigration::ResetMergeStatus, :migration, schema: 20190528180441 do
+  let(:namespaces) { table(:namespaces) }
+  let(:projects) { table(:projects) }
+  let(:namespace) { namespaces.create(name: 'gitlab', path: 'gitlab-org') }
+  let(:project) { projects.create(namespace_id: namespace.id, name: 'foo') }
+  let(:merge_requests) { table(:merge_requests) }
+
+  def create_merge_request(id, extra_params = {})
+    params = {
+      id: id,
+      target_project_id: project.id,
+      target_branch: 'master',
+      source_project_id: project.id,
+      source_branch: 'mr name',
+      title: "mr name#{id}"
+    }.merge(extra_params)
+
+    merge_requests.create!(params)
+  end
+
+  it 'correctly updates opened mergeable MRs to unchecked' do
+    create_merge_request(1, state: 'opened', merge_status: 'can_be_merged')
+    create_merge_request(2, state: 'opened', merge_status: 'can_be_merged')
+    create_merge_request(3, state: 'opened', merge_status: 'can_be_merged')
+    create_merge_request(4, state: 'merged', merge_status: 'can_be_merged')
+    create_merge_request(5, state: 'opened', merge_status: 'cannot_be_merged')
+
+    subject.perform(1, 5)
+
+    expected_rows = [
+      { id: 1, state: 'opened', merge_status: 'unchecked' },
+      { id: 2, state: 'opened', merge_status: 'unchecked' },
+      { id: 3, state: 'opened', merge_status: 'unchecked' },
+      { id: 4, state: 'merged', merge_status: 'can_be_merged' },
+      { id: 5, state: 'opened', merge_status: 'cannot_be_merged' }
+    ]
+
+    rows = merge_requests.order(:id).map do |row|
+      row.attributes.slice('id', 'state', 'merge_status').symbolize_keys
+    end
+
+    expect(rows).to eq(expected_rows)
+  end
+end