1 files changed, 34 insertions, 0 deletions
diff --git a/spec/lib/gitlab/ci/build/prerequisite/factory_spec.rb b/spec/lib/gitlab/ci/build/prerequisite/factory_spec.rb
new file mode 100644
index 00000000000..5187f99a441
--- /dev/null
+++ b/spec/lib/gitlab/ci/build/prerequisite/factory_spec.rb
@@ -0,0 +1,34 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+describe Gitlab::Ci::Build::Prerequisite::Factory do
+  let(:build) { create(:ci_build) }
+
+  describe '.for_build' do
+    let(:kubernetes_namespace) do
+      instance_double(
+        Gitlab::Ci::Build::Prerequisite::KubernetesNamespace,
+        unmet?: unmet)
+    end
+
+    subject { described_class.new(build).unmet }
+
+    before do
+      expect(Gitlab::Ci::Build::Prerequisite::KubernetesNamespace)
+        .to receive(:new).with(build).and_return(kubernetes_namespace)
+    end
+
+    context 'prerequisite is unmet' do
+      let(:unmet) { true }
+
+      it { is_expected.to eq [kubernetes_namespace] }
+    end
+
+    context 'prerequisite is met' do
+      let(:unmet) { false }
+
+      it { is_expected.to be_empty }
+    end
+  end
+end