1 files changed, 33 insertions, 0 deletions
diff --git a/spec/models/ci/pending_build_spec.rb b/spec/models/ci/pending_build_spec.rb
new file mode 100644
index 00000000000..c1d4f4b0a5e
--- /dev/null
+++ b/spec/models/ci/pending_build_spec.rb
@@ -0,0 +1,33 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+RSpec.describe Ci::PendingBuild do
+  let_it_be(:project) { create(:project) }
+  let_it_be(:pipeline) { create(:ci_pipeline, project: project) }
+
+  let(:build) { create(:ci_build, :created, pipeline: pipeline) }
+
+  describe '.upsert_from_build!' do
+    context 'another pending entry does not exist' do
+      it 'creates a new pending entry' do
+        result = described_class.upsert_from_build!(build)
+
+        expect(result.rows.dig(0, 0)).to eq build.id
+        expect(build.reload.queuing_entry).to be_present
+      end
+    end
+
+    context 'when another queuing entry exists for given build' do
+      before do
+        described_class.create!(build: build, project: project, protected: false)
+      end
+
+      it 'returns a build id as a result' do
+        result = described_class.upsert_from_build!(build)
+
+        expect(result.rows.dig(0, 0)).to eq build.id
+      end
+    end
+  end
+end