diff --git a/qa/spec/runtime/rsa_key.rb b/qa/spec/runtime/rsa_key.rb
new file mode 100644
index 00000000000..ff277b9077b
--- /dev/null
+++ b/qa/spec/runtime/rsa_key.rb
@@ -0,0 +1,9 @@
+describe QA::Runtime::RSAKey do
+  describe '#public_key' do
+    subject { described_class.new.public_key }
+
+    it 'generates a public RSA key' do
+      expect(subject).to match(/\Assh\-rsa AAAA[0-9A-Za-z+\/]+={0,3}\z/)
+    end
+  end
+end