Tests for TokenIssuance.clean_old_tokens

spec/models/token_issuance_spec.rb

@@ -7,4 +7,14 @@ describe TokenIssuance do
     allow(Rollbar).to receive(:error).and_return("OK")
     TokenIssuance.new(device_id: 8).maybe_evict_clients
   end
+
+  it "clears out old stuff via #clean_old_tokens" do
+    TokenIssuance.delete_all
+    TokenIssuance.create(device_id: 8,
+                         exp: 1.year.ago.to_i,
+                         jti: "WOW")
+    expect(TokenIssuance.count).to eq(1)
+    TokenIssuance.clean_old_tokens
+    expect(TokenIssuance.count).to eq(0)
+  end
 end