1 files changed, 45 insertions, 0 deletions
diff --git a/spec/support/gitlab_verify.rb b/spec/support/gitlab_verify.rb
new file mode 100644
index 00000000000..13e2e37624d
--- /dev/null
+++ b/spec/support/gitlab_verify.rb
@@ -0,0 +1,45 @@
+RSpec.shared_examples 'Gitlab::Verify::BatchVerifier subclass' do
+  describe 'batching' do
+    let(:first_batch) { objects[0].id..objects[0].id }
+    let(:second_batch) { objects[1].id..objects[1].id }
+    let(:third_batch) { objects[2].id..objects[2].id }
+
+    it 'iterates through objects in batches' do
+      expect(collect_ranges).to eq([first_batch, second_batch, third_batch])
+    end
+
+    it 'allows the starting ID to be specified' do
+      expect(collect_ranges(start: second_batch.first)).to eq([second_batch, third_batch])
+    end
+
+    it 'allows the finishing ID to be specified' do
+      expect(collect_ranges(finish: second_batch.last)).to eq([first_batch, second_batch])
+    end
+  end
+end
+
+module GitlabVerifyHelpers
+  def collect_ranges(args = {})
+    verifier = described_class.new(args.merge(batch_size: 1))
+
+    collect_results(verifier).map { |range, _| range }
+  end
+
+  def collect_failures
+    verifier = described_class.new(batch_size: 1)
+
+    out = {}
+
+    collect_results(verifier).map { |_, failures| out.merge!(failures) }
+
+    out
+  end
+
+  def collect_results(verifier)
+    out = []
+
+    verifier.run_batches { |*args| out << args }
+
+    out
+  end
+end