diff --git a/__e2e__/didYouMean.test.ts b/__e2e__/unknown.test.ts
similarity index 61%
rename from __e2e__/didYouMean.test.ts
rename to __e2e__/unknown.test.ts
index d331c1abc..860c6812b 100644
--- a/__e2e__/didYouMean.test.ts
+++ b/__e2e__/unknown.test.ts
@@ -1,6 +1,6 @@
 import {run, getTempDirectory, cleanup, writeFiles} from '../jest/helpers';
 
-const DIR = getTempDirectory('test_didyoumean');
+const DIR = getTempDirectory('test_unknown');
 
 beforeEach(() => {
   cleanup(DIR);
@@ -10,6 +10,11 @@ afterEach(() => {
   cleanup(DIR);
 });
 
+test('warn for passing in unknown commands', () => {
+  const {stderr} = run(DIR, ['unknown'], {expectedFailure: true});
+  expect(stderr).toContain('error Unrecognized command "unknown".');
+});
+
 test('suggest matching command', () => {
   const {stderr} = run(DIR, ['ini'], {expectedFailure: true});
   expect(stderr).toContain(