1 files changed, 125 insertions, 0 deletions
diff --git a/spec/lib/gitlab/database/background_migration_job_spec.rb b/spec/lib/gitlab/database/background_migration_job_spec.rb
new file mode 100644
index 00000000000..40f47325be3
--- /dev/null
+++ b/spec/lib/gitlab/database/background_migration_job_spec.rb
@@ -0,0 +1,125 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+RSpec.describe Gitlab::Database::BackgroundMigrationJob do
+  it_behaves_like 'having unique enum values'
+
+  describe '.for_migration_execution' do
+    let!(:job1) { create(:background_migration_job) }
+    let!(:job2) { create(:background_migration_job, arguments: ['hi', 2]) }
+    let!(:job3) { create(:background_migration_job, class_name: 'OtherJob', arguments: ['hi', 2]) }
+
+    it 'returns jobs matching class_name and arguments' do
+      relation = described_class.for_migration_execution('TestJob', ['hi', 2])
+
+      expect(relation.count).to eq(1)
+      expect(relation.first).to have_attributes(class_name: 'TestJob', arguments: ['hi', 2])
+    end
+
+    it 'normalizes class names by removing leading ::' do
+      relation = described_class.for_migration_execution('::TestJob', ['hi', 2])
+
+      expect(relation.count).to eq(1)
+      expect(relation.first).to have_attributes(class_name: 'TestJob', arguments: ['hi', 2])
+    end
+  end
+
+  describe '.for_partitioning_migration' do
+    let!(:job1) { create(:background_migration_job, arguments: [1, 100, 'other_table']) }
+    let!(:job2) { create(:background_migration_job, arguments: [1, 100, 'audit_events']) }
+    let!(:job3) { create(:background_migration_job, class_name: 'OtherJob', arguments: [1, 100, 'audit_events']) }
+
+    it 'returns jobs matching class_name and the table_name job argument' do
+      relation = described_class.for_partitioning_migration('TestJob', 'audit_events')
+
+      expect(relation.count).to eq(1)
+      expect(relation.first).to have_attributes(class_name: 'TestJob', arguments: [1, 100, 'audit_events'])
+    end
+
+    it 'normalizes class names by removing leading ::' do
+      relation = described_class.for_partitioning_migration('::TestJob', 'audit_events')
+
+      expect(relation.count).to eq(1)
+      expect(relation.first).to have_attributes(class_name: 'TestJob', arguments: [1, 100, 'audit_events'])
+    end
+  end
+
+  describe '.mark_all_as_succeeded' do
+    let!(:job1) { create(:background_migration_job, arguments: [1, 100]) }
+    let!(:job2) { create(:background_migration_job, arguments: [1, 100]) }
+    let!(:job3) { create(:background_migration_job, arguments: [101, 200]) }
+    let!(:job4) { create(:background_migration_job, class_name: 'OtherJob', arguments: [1, 100]) }
+
+    it 'marks all matching jobs as succeeded' do
+      expect { described_class.mark_all_as_succeeded('TestJob', [1, 100]) }
+        .to change { described_class.succeeded.count }.from(0).to(2)
+
+      expect(job1.reload).to be_succeeded
+      expect(job2.reload).to be_succeeded
+      expect(job3.reload).to be_pending
+      expect(job4.reload).to be_pending
+    end
+
+    it 'normalizes class_names by removing leading ::' do
+      expect { described_class.mark_all_as_succeeded('::TestJob', [1, 100]) }
+        .to change { described_class.succeeded.count }.from(0).to(2)
+
+      expect(job1.reload).to be_succeeded
+      expect(job2.reload).to be_succeeded
+      expect(job3.reload).to be_pending
+      expect(job4.reload).to be_pending
+    end
+
+    context 'when previous matching jobs have already succeeded' do
+      let(:initial_time) { Time.now.round }
+      let!(:job1) { create(:background_migration_job, :succeeded, created_at: initial_time, updated_at: initial_time) }
+
+      it 'does not update non-pending jobs' do
+        Timecop.freeze(initial_time + 1.day) do
+          expect { described_class.mark_all_as_succeeded('TestJob', [1, 100]) }
+            .to change { described_class.succeeded.count }.from(1).to(2)
+        end
+
+        expect(job1.reload.updated_at).to eq(initial_time)
+        expect(job2.reload).to be_succeeded
+        expect(job3.reload).to be_pending
+        expect(job4.reload).to be_pending
+      end
+    end
+  end
+
+  describe '#class_name=' do
+    context 'when the class_name is given without the leading ::' do
+      it 'sets the class_name to the given value' do
+        job = described_class.new(class_name: 'TestJob')
+
+        expect(job.class_name).to eq('TestJob')
+      end
+    end
+
+    context 'when the class_name is given with the leading ::' do
+      it 'removes the leading :: when setting the class_name' do
+        job = described_class.new(class_name: '::TestJob')
+
+        expect(job.class_name).to eq('TestJob')
+      end
+    end
+
+    context 'when the value is nil' do
+      it 'sets the class_name to nil' do
+        job = described_class.new(class_name: nil)
+
+        expect(job.class_name).to be_nil
+      end
+    end
+
+    context 'when the values is blank' do
+      it 'sets the class_name to the given value' do
+        job = described_class.new(class_name: '')
+
+        expect(job.class_name).to eq('')
+      end
+    end
+  end
+end