1 files changed, 30 insertions, 0 deletions
diff --git a/spec/workers/ci/build_prepare_worker_spec.rb b/spec/workers/ci/build_prepare_worker_spec.rb
new file mode 100644
index 00000000000..9f76696ee66
--- /dev/null
+++ b/spec/workers/ci/build_prepare_worker_spec.rb
@@ -0,0 +1,30 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+describe Ci::BuildPrepareWorker do
+  subject { described_class.new.perform(build_id) }
+
+  context 'build exists' do
+    let(:build) { create(:ci_build) }
+    let(:build_id) { build.id }
+    let(:service) { double(execute: true) }
+
+    it 'calls the prepare build service' do
+      expect(Ci::PrepareBuildService).to receive(:new).with(build).and_return(service)
+      expect(service).to receive(:execute).once
+
+      subject
+    end
+  end
+
+  context 'build does not exist' do
+    let(:build_id) { -1 }
+
+    it 'does not attempt to prepare the build' do
+      expect(Ci::PrepareBuildService).not_to receive(:new)
+
+      subject
+    end
+  end
+end