test: refactor to run asynchronously (#174)

tests/specs/cli/error-cases.ts

@@ -0,0 +1,24 @@
+import { testSuite, expect } from 'manten';
+import { createFixture, createGit } from '../../utils.js';
+
+export default testSuite(({ describe }) => {
+	describe('Error cases', async ({ test }) => {
+		test('Fails on non-Git project', async () => {
+			const { fixture, aicommits } = await createFixture();
+			const { stdout, exitCode } = await aicommits([], { reject: false });
+			expect(exitCode).toBe(1);
+			expect(stdout).toMatch('The current directory must be a Git repository!');
+			await fixture.rm();
+		});
+
+		test('Fails on no staged files', async () => {
+			const { fixture, aicommits } = await createFixture();
+			await createGit(fixture.path);
+
+			const { stdout, exitCode } = await aicommits([], { reject: false });
+			expect(exitCode).toBe(1);
+			expect(stdout).toMatch('No staged changes found. Make sure to stage your changes with `git add`.');
+			await fixture.rm();
+		});
+	});
+});