diff --git a/tests/commands/unipept.test.ts b/tests/commands/unipept.test.ts
index e69de29b..c2b2e340 100644
--- a/tests/commands/unipept.test.ts
+++ b/tests/commands/unipept.test.ts
@@ -0,0 +1,7 @@
+import { Unipept } from '../../lib/commands/unipept';
+
+test('test single argument', async () => {
+  const command = new Unipept();
+  const commandNames = command.program.commands.map(c => c.name());
+  expect(commandNames).toContain("pept2lca");
+});