adds happy path test

src/index.mjs

@@ -102,7 +102,7 @@ function showNextSteps() {
 		stripIndent(`
 			${picocolors.green(`You can now lint your CSS files using:
 			npx stylelint "**/*.css"`)}
-			
+
 			${picocolors.dim(`We recommend customizing Stylelint:
 			https://stylelint.io/user-guide/customize/`)}
 		`),

test/fixtures/valid-env/clean-package.json

@@ -0,0 +1,11 @@
+{
+  "name": "test",
+  "version": "1.0.0",
+  "description": "",
+  "license": "MIT",
+  "author": "",
+  "main": "index.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  }
+}

test/fixtures/valid-env/reset-state.sh

@@ -0,0 +1,7 @@
+#! /bin/sh
+
+rm -f .stylelintrc.json
+rm -f package.json
+rm -f package-lock.json
+rm -rf node_modules
+cp clean-package.json package.json

test/integration.test.js

@@ -1,10 +1,11 @@
 // eslint-disable-next-line node/no-unpublished-import
-import { describe, expect, it } from 'vitest';
+import { afterEach, describe, expect, it, vi } from 'vitest';
 import { execFileSync } from 'node:child_process';
 
 const inputs = {
 	noPackageJson: 'test/fixtures/no-package-json',
 	stylelintConfigExists: 'test/fixtures/stylelint-config-exists',
+	validEnv: 'test/fixtures/valid-env',
 };
 
 function getProjectRoot(context) {
@@ -17,7 +18,30 @@ function setup(pathToTest, projectRoot, args = []) {
 	});
 }
 
+function cleanupGenFiles() {
+	const pathsToCleanup = [inputs.validEnv];
+
+	for (let pathToTest of pathsToCleanup) {
+		execFileSync('./reset-state.sh', [], {
+			// eslint-disable-next-line no-undef
+			cwd: `${__dirname}/../${pathToTest}`,
+		});
+	}
+}
+
+vi.mock('execa');
+
 describe('stylelint-create', () => {
+	afterEach(() => {
+		cleanupGenFiles();
+	});
+
+	it('should succeed in a valid env', (context) => {
+		const projectRoot = getProjectRoot(context);
+
+		expect(setup(inputs.validEnv, projectRoot)).toMatch(/You can now lint your CSS files using/);
+	});
+
 	it('should not proceed if a Stylelint config already exists in the directory', (context) => {
 		const projectRoot = getProjectRoot(context);
 

vitest.config.ts

@@ -3,5 +3,6 @@ import { defineConfig } from 'vitest/config';
 export default defineConfig({
 	test: {
 		include: ['**/*.test.{js,mjs,cjs}'],
+		watchExclude: ['**/node_modules/**', 'test/fixtures/**'],
 	},
 });