test: add missing test for env file

Author: JonasBa

test/parallel/test-dotenv-edge-cases.js

@@ -148,4 +148,16 @@ describe('.env supports edge cases', () => {
  assert.strictEqual(child.stderr, '');
  assert.strictEqual(child.code, 0);
  });
+
+ it('should reject invalid env file flag', async () => {
+ const child = await common.spawnPromisified(
+ process.execPath,
+ ['--env-file-ABCD', validEnvFilePath],
+ { cwd: __dirname },
+ );
+
+ assert.strictEqual(child.stdout, '');
+ assert.strictEqual(child.code, 9);
+ assert.match(child.stderr, /bad option: --env-file-ABCD/);
+ });
 });